[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR173.225]
[Page 551-567]
TITLE 49--TRANSPORTATION
CHAPTER I--PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION,
DEPARTMENT OF TRANSPORTATION
PART 173_SHIPPERS_GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS
--Table of Contents
Subpart E_Non-bulk Packaging for Hazardous Materials Other Than Class 1
and Class 7
Sec. 173.225 Packaging requirements and other provisions for organic
peroxides.
(a) General. When the Sec. 172.101 table specifies that an organic
peroxide must be packaged under this section, the organic peroxide must
be packaged and offered for transportation in accordance with the
provisions of this section. Each packaging must conform to the general
requirements of subpart B of part 173 and to the applicable requirements
of part 178 of this subchapter. Non-bulk packagings must meet Packing
Group II performance levels. To avoid unnecessary confinement, metallic
non-bulk packagings
[[Page 552]]
meeting Packing Group I are not authorized. No used material, other than
production residues or regrind from the same production process, may be
used in plastic packagings. Organic peroxides that require temperature
control are subject to the provisions of Sec. 173.21(f). When an IBC or
bulk packaging is authorized and meets the requirements of paragraph (f)
or (h) of this section, respectively, lower control temperatures than
those specified for non-bulk packaging may be required. An organic
peroxide not identified in paragraph (c), (e), or (g) of this section by
technical name, or not assigned to a generic type in accordance with the
provisions in paragraph (b)(3) of this section, must conform to the
provisions of paragraph (c) of Sec. 173.128.
(b) New organic peroxides, formulations and samples. (1) Except as
provided for samples in paragraph (b)(2) of this section, no person may
offer for transportation an organic peroxide that is not identified by
technical name in the Organic Peroxides Table, Organic Peroxide IBC
Table, or the Organic Peroxide Portable Tank Table of this section, or a
formulation of one or more organic peroxides that are identified by
technical name in one of those tables, unless the organic peroxide is
assigned a generic type and shipping description and is approved by the
Associate Administrator under the provisions of Sec. 173.128(d) of this
subchapter.
(2) Samples. Samples of new organic peroxides or new formulations of
organic peroxides identified in the Organic Peroxides Table in paragraph
(c) of this section, for which complete test data are not available, and
that are to be transported for further testing or product evaluation,
may be assigned an appropriate shipping description for organic peroxide
Type C, packaged and offered for transportation, under the following
conditions:
(i) Data available to the person offering the material for
transportation must indicate that the sample would pose a level of
hazard no greater than that of an organic peroxide Type B and that the
control temperature, if any, is sufficiently low to prevent any
dangerous decomposition and sufficiently high to prevent any dangerous
phase separation;
(ii) The sample must be packaged in accordance with packing method
OP2, for a liquid or solid, respectively;
(iii) Packages of the organic peroxide may be offered for
transportation and transported in a quantity not to exceed 10 kg (22
pounds) per transport vehicle; and
(iv) One of the following shipping descriptions must be assigned:
(A) Organic peroxide Type C, liquid, 5.2, UN 3103;
(B) Organic peroxide Type C, solid, 5.2, UN 3104;
(C) Organic peroxide Type C, liquid, temperature controlled, 5.2, UN
3113; or
(D) Organic peroxide Type C, solid, temperature controlled, 5.2, UN
3114.
(3) Mixtures. Mixtures of organic peroxides individually identified
in the Organic Peroxides Table in paragraph (c) of this section may be
classified as the same type of organic peroxide as that of the most
dangerous component and be transported under the conditions for
transportation given for this type. If the stable components form a
thermally less stable mixture, the SADT of the mixture must be
determined and the new control and emergency temperature derived under
the provisions of Sec. 173.21(f).
(c) Organic peroxides table. The following Organic Peroxides Table
specifies by technical name those organic peroxides that are authorized
for transportation and not subject to the approval provisions of Sec.
173.128 of this part. An organic peroxide identified by technical name
in the following table is authorized for transportation only if it
conforms to all applicable provisions of the table. The column headings
of the Organic Peroxides Table are as follows:
(1) Technical name. The first column specifies the technical name.
(2) ID number. The second column specifies the identification (ID)
number which is used to identify the proper shipping name in the Sec.
172.101 table. The word ``EXEMPT'' appearing in the column denotes that
the material is not regulated as an organic peroxide.
(3) Concentration of organic peroxide. The third column specifies
concentration (mass percent) limitations, if any, in mixtures or
solutions for the organic peroxide. Limitations are given as
[[Page 553]]
minimums, maximums, or a range, as appropriate. A range includes the
lower and upper limits (i.e., ``53-100'' means from, and including, 53%
to, and including 100%). See introductory paragraph of Sec. 172.203(k)
of this subchapter for additional description requirements for an
organic peroxide that may qualify for more than one generic listing,
depending on its concentration.
(4) Concentration of diluents. The fourth column specifies the type
and concentration (mass percent) of diluent or inert solid, when
required. Other types and concentrations of diluents may be used if
approved by the Associate Administrator.
(i) The required mass percent of ``Diluent type A'' is specified in
column 4a. A diluent type A is an organic liquid that does not
detrimentally affect the thermal stability or increase the hazard of the
organic peroxide and with a boiling point not less than 150 [deg]C at
atmospheric pressure. Type A diluents may be used for desensitizing all
organic peroxides.
(ii) The required mass percent of ``Diluent type B'' is specified in
column 4b. A diluent type B is an organic liquid which is compatible
with the organic peroxide and which has a boiling point, at atmospheric
pressure, of less than 150 [deg]C (302 [deg]F) but at least 60 [deg]C
(140 [deg]F), and a flash point greater than 5 [deg]C (41 [deg]F). Type
B diluents may be used for desensitizing all organic peroxides, when
specified in the organic peroxide tables, provided that the boiling
point is at least 60 [deg]C (140 [deg]F) above the SADT of the peroxide
in a 50 kg (110 lbs) package. A type A diluent may be used to replace a
type B diluent in equal concentration.
(iii) The required mass percent of ``Inert solid'' is specified in
column 4c. An inert solid is a solid that does not detrimentally affect
the thermal stability or hazard of the organic peroxide.
(5) Concentration of water. Column 5 specifies, in mass percent, the
minimum amount of water, if any, which must be in formulation.
(6) Packing method. Column 6 specifies the highest packing method
(largest packaging capacity) authorized for the organic peroxide. Lower
numbered packing methods (smaller packaging capacities) are also
authorized. For example, if OP3 is specified, then OP2 and OP1 are also
authorized. The Table of Packing Methods in paragraph (d) of this
section defines the non-bulk packing methods.
(7) Temperatures. Column 7a specifies the control temperature.
Column 7b specifies the emergency temperature. Temperatures are
specified only when temperature controls are required. (See Sec.
173.21(f)).
(8) Notes. Column 8 specifies other applicable provisions, as set
forth in notes following the table.
[[Page 554]]
Organic Peroxide Table
--------------------------------------------------------------------------------------------------------------------------------------------------------
Diluent (mass %) Water Temperature ( [deg]C)
Technical name ID number Concentration ------------------------- (mass Packing method ------------------------ Notes
(mass %) A B I %) Control Emergency
(1) (2)....... (3)............. (4a)... (4b).. (4c).. (5).... (6).............. (7a)..... (7b)....... (8)
--------------------------------
Acetyl acetone peroxide........ UN3105.... <=42............ 42-10 ....... ...... ...... ....... OP8.............. ......... ........... 9
0.
tert-Butyl cumyl peroxide...... UN3108.... <=52............ ....... ...... 52-10 ....... ...... ...... ....... OP5.............. ......... ........... ............
butylperoxy)valerate. 0.
n-Butyl-4,4-di-(tert- UN3108.... <=52............ ....... ...... 79-90 ....... ...... ...... 9 ....... ...... ...... 52-10 ....... ...... ...... ....... OP5.............. ......... ........... ............
0.
tert-Butyl monoperoxymaleate... UN3103.... <=52............ 52-77 32-52 77-10 ....... ...... ...... ....... OP5.............. ......... ........... ............
0.
tert-Butyl peroxybenzoate...... UN3105.... 52-77 52-10 ....... ...... ...... ....... OP6.............. +20...... +25........ ............
ethylhexanoate. 0.
tert-Butyl peroxy-2- UN3117.... 32-52 ....... 52-77 ....... 77-10 ....... ...... ...... ....... OP7.............. -5....... +5......... ............
0.
tert-Butyl peroxyneodecanoate.. UN3115.... <=77............ ....... 67-77 27-67 ....... 32-10 ....... ...... ...... ....... OP7.............. ......... ........... ............
trimethylhexanoate. 0.
tert-Butyl peroxy-3,5,5- UN3109.... <=32............ ....... 57-86 ....... ...... 90-98 <=10... ...... ...... ....... OP8.............. ......... ........... 13
Cumyl hydroperoxide............ UN3109.... <=90............ 51-10 ....... ...... <=48.. ....... OP2.............. ......... ........... 3
0.
Dibenzoyl peroxide............. UN3102.... 77-94 ....... ...... ...... 52-62 ....... ...... ...... ....... OP7.............. ......... ........... 21
Dibenzoyl peroxide............. UN3106.... 35-52 ....... ...... 36-42 52-10 ....... ...... ...... ....... OP8.............. ......... ........... ............
0.
Di-tert-butyl peroxide......... UN3109.... <=52............ ....... 80-10 ....... ...... ...... ....... OP5.............. ......... ........... ............
butylperoxy)cyclohexane. 0.
1,1-Di-(tert- UN3103.... 52-80 42-52 27-52 ....... 52-10 ....... ...... ...... ....... OP4.............. -20...... -10........ 6
0.
Di-sec-butyl peroxydicarbonate. UN3115.... <=52............ ....... 42-10 ....... ...... <=57.. ....... OP7.............. ......... ........... 1, 9
butylperoxyisopropyl)benzene(s 0.
).
Di-(2-tert- Exempt.... <=42............ ....... ...... 42-52 90-10 ....... ...... ...... ....... OP5.............. ......... ........... ............
trimethylcyclohexane. 0.
1,1-Di-(tert-butylperoxy)-3,3,5- UN3103.... 57-90 52-10 ....... ...... <=48.. ....... OP8.............. ......... ........... 9
0.
Dicumyl peroxide............... Exempt.... <=52............ ....... ...... 91-10 ....... ...... ...... ....... OP3.............. +10...... +15........ ............
0.
Dicyclohexyl peroxydicarbonate. UN3114.... <=91............ ....... ...... ...... 77-10 ....... ...... ...... ....... OP5.............. -20...... -10........ ............
peroxydicarbonate. 0.
Di-(2-ethylhexyl) UN3115.... <=77............ ....... 32-52 ....... 52-10 ....... ...... ...... ....... OP2.............. -15...... -5......... ............
0.
Diisopropyl peroxydicarbonate.. UN3115.... <=52............ ....... 82-10 ....... ...... ...... ....... OP5.............. ......... ........... ............
(benzoylperoxy)hexane. 0.
2,5-Dimethyl-2,5-di- UN3106.... <=82............ ....... ...... 52-10 ....... ...... ...... ....... OP7.............. ......... ........... ............
butylperoxy)hexane. 0.
2,5-Dimethyl-2,5-di-(tert- UN3108.... <=77............ ....... ...... 86-10 ....... ...... ...... ....... OP5.............. ......... ........... ............
butylperoxy)hexyne-3. 0.
2,5-Dimethyl-2,5-di-(tert- UN3103.... 52-86 85-10 ....... ...... ...... ....... OP5.............. ......... ........... ............
phenoxyethyl)peroxydicarbonate. 0.
Di-(2- UN3106.... <=85............ ....... ...... ...... 72-10 ....... ...... ...... ....... OP4.............. ......... ........... 18
0.
Disuccinic acid peroxide....... UN3116.... <=72............ ....... ...... ...... 38-82 77-10 ....... ...... ...... ....... OP5.............. ......... ........... ............
butylperoxy)butyrate. 0.
Ethyl 3,3-di-(tert- UN3105.... <=77............ 72- ....... ...... ...... ....... OP7.............. ......... ........... 13
100.
p-Menthyl hydroperoxide........ UN3109.... <=72............ 56-10 ....... ...... ...... ....... OP7.............. ......... ........... 13
0.
Pinanyl hydroperoxide.......... UN3109.... <=56............ =8% 1-isopropylhydroperoxy-4-
isopropylhydroxybenzene.
18. Addition of water to this organic peroxide will decrease its
thermal stability.
19. [Reserved]
20. Mixtures with hydrogen peroxide, water and acid(s).
21. With diluent type A, with or without water.
22. With =36% diluent type A by mass, and in addition
ethylbenzene.
23. With =19% diluent type A by mass, and in addition
methyl isobutyl ketone.
24. Diluent type B with boiling point 100 C.
25. No ``Corrosive'' subsidiary risk label is required for
concentrations below 56%.
26. Available oxygen must be <=7.6%.
27. Formulations derived from distillation of peroxyacetic acid
originating from peroxyacetic acid in a concentration of not more than
41% with water, total active oxygen less than or equal to 9.5%
(peroxyacetic acid plus hydrogen peroxide).
28. For the purposes of this section, the names ``Peroxyacetic
acid'' and ``Peracetic acid'' are synonymous.
(d) Packing Method Table. Packagings for organic peroxides and self-
reactive substances are listed in the Maximum Quantity per Packing
Method Table. The packing methods are designated OP1 to OP8. The
quantities specified for each packing method represent the maximum that
is authorized.
(1) The following types of packagings are authorized:
(i) Drums: 1A1, 1A2, 1B1, 1B2, 1D, 1G, 1H1, 1H2;
(ii) Jerricans: 3A1, 3A2, 3B1, 3B2, 3H1, 3H2;
(iii) Boxes: 4C1, 4C2, 4D, 4F, 4G, 4H1, 4H2, 4A, 4B; or
(iv) Composite packagings with a plastic inner receptacle: 6HA1,
6HA2, 6HB1, 6HB2, 6HC, 6HD1, 6HD2, 6HG1, 6HG2, 6HH1, 6HH2.
(2) Metal packaging (including inner packagings of combination
packagings and outer packagings of combination or composite packagings)
are used only for packing methods OP7 and OP8.
(3) In combination packagings, glass receptacles are used only as
inner packagings with a maximum content of 0.5 kg for solids or 0.5 L
for liquids.
(4) The maximum quantity per packaging or package for Packing
Methods OP1-OP8 must be as follows:
Maximum Quantity Per Packaging/Package
[For Packing Methods OP1 to OP8]
----------------------------------------------------------------------------------------------------------------
Packing Method
Maximum quantity -----------------------------------------------------------------------
OP1 OP2 OP3 OP4 \1\ OP5 OP6 OP7 OP8
----------------------------------------------------------------------------------------------------------------
Solids and combination packagings 0.5 0.5/10 5 5 25 50 50 \2\ 400
(liquid and solid) (kg)................
Liquids (L)............................. 0.5 ....... 5 ....... 30 60 60 \3\ 225
----------------------------------------------------------------------------------------------------------------
\1\ If two values are given, the first applies to the maximum net mass per inner packaging and the second to the
maximum net mass of the complete package.
\2\ 60 kg for jerricans/200 kg for boxes and, for solids, 400 kg in combination packagings with outer packagings
comprising boxes (4C1, 4C2, 4D, 4F, 4G, 4H1, and 4H2) and with inner packagings of plastics or fiber with a
maximum net mass of 25 kg.
\3\ 60 L for jerricans.
[[Page 561]]
(e) Organic Peroxide IBC Table. The following Organic Peroxide IBC
Table specifies, by technical name, those organic peroxides that are
authorized for transportation in certain IBCs and not subject to the
approval provisions of Sec. 173.128 of this part. Additional
requirements for authorized IBCs are found in paragraph (f) of this
section.
Organic Peroxide IBC Table
--------------------------------------------------------------------------------------------------------------------------------------------------------
Maximum
UN No. Organic peroxide Type of IBC quantity Control temperature Emergency temperature
(litres)
--------------------------------------------------------------------------------------------------------------------------------------------------------
3109................................ ORGANIC PEROXIDE, TYPE
F, LIQUID.
tert-Butyl 31A 1250
hydroperoxide, not
more than 72% with
water.
tert-Butyl 31A 1250
peroxyacetate, not
more than 32% in
diluent type A.
....................... 31HA1 1000
tert-Butyl peroxy-3,5,5- 31A 1250
trimethylhexanoate,
not more than 32% in
diluent type A.
....................... 31HA1 1000
Cumyl hydroperoxide, 31HA1 1250
not more than 90% in
diluent type A.
Dibenzoyl peroxide, not 31H1 1000
more than 42% as a
stable dispersion.
Di-tert-butyl peroxide, 31A 1250
not more than 52% in
diluent type B.
....................... 31HA1 1000
1,1-Di-(tert- 31H1 1000
butylperoxy)
cyclohexane, not more
than 42% in diluent
type A.
Dicumyl peroxide, less 31A 1250
than or equal to 100%.
....................... 31HA1 1000
Dilauroyl peroxide, not 31HA1 1000
more than 42%, stable
dispersion, in water.
Isopropyl cumyl 31HA1 1250
hydroperoxide, not
more than 72% in
diluent type A.
p-Menthyl 31HA1 1250
hydroperoxide, not
more than 72% in
diluent type A.
Peroxyacetic acid, 31H1 1500
stabilized, not more
than 17%.
....................... 31HA1 1500
....................... 31A 1500
Peroxyacetic acid, with 31A 1500
not more than 26%
hydrogen peroxide.
....................... 31HA1 1500
Peroxyacetic acid, type 31A 1500
F, stabilized.
....................... 31HA1 1500
3110................................ ORGANIC PEROXIDE TYPE
F, SOLID.
Dicumyl peroxide, less 31A 2000
than or equal to 100%.
....................... 31H1
....................... 31HA1
3119................................ ORGANIC PEROXIDE, TYPE
F, LIQUID, TEMPERATURE
CONTROLLED.
tert-Butyl peroxy-2- 31HA1 1000 +30 [deg]C +35 [deg]C
ethylhexanoate, not
more than 32% in
diluent type B.
....................... 31A 1250 +30 [deg]C +35 [deg]C
tert-Butyl 31A 1250 0 [deg]C +10 [deg]C
peroxyneodecanoate,
not more than 32% in
diluent type A.
[[Page 562]]
tert-Butyl 31A 1250 -5 [deg]C +5 [deg]C
peroxyneodecanoate,
not more than 42%
stable dispersion, in
water.
tert-Butyl 31HA1 1000 +10 [deg]C +15 [deg]C
peroxypivalate, not
more than 27% in
diluent type B.
....................... 31A 1250 +10 [deg]C +15 [deg]C
Cumyl 31A 1250 -15 [deg]C -5 [deg]C
peroxyneodecanoate,
not more than 52%,
stable dispersion, in
water.
Dicyclohexylperoxydicar 31A 1250 +10 [deg]C +15 [deg]C
bonate, not more than
42% as a stable
dispersion, in water.
Di-(4-tert- 31HA1 1000 +30 [deg]C +35 [deg]C
butylcyclohexyl)
peroxydicarbonate, not
more than 42%, stable
dispersion, in water.
Dicetyl 31HA1 1000 +30 [deg]C +35 [deg]C
peroxydicarbonate, not
more than 42%, stable
dispersion, in water.
Di-(2-ethylhexyl) 31A 1250 -20 [deg]C -10 [deg]C
peroxydicarbonate, not
more than 52%, stable
dispersion, in water.
Dimyristyl 31HA1 1000 +15 [deg]C +20 [deg]C
peroxydicarbonate, not
more than 42%, stable
dispersion, in water.
Di-(3,5,5- 31HA1 1000 +10 [deg]C +15 [deg]C
trimethylhexanoyl)
peroxide, not more
than 38% in diluent
type A.
....................... 31A 1250 +10 [deg]C +15 [deg]C
Di-(3,5,5- 31A 1250 +10 [deg]C +15 [deg]C
trimethylhexanoyl)
peroxide, not more
than 52%, stable
dispersion, in water.
1,1,3,3- 31A 1250 -5 [deg]C +5 [deg]C
Tetramethylbutyl
peroxyneodecanoate,
not more than 52%,
stable dispersion, in
water.
--------------------------------------------------------------------------------------------------------------------------------------------------------
(f) IBCs. IBCs are authorized subject to the conditions and
limitations of this section if the IBC type is authorized according to
paragraph (e) of this section, as applicable, and the IBC conforms to
the requirements in subpart O of part 178 of this subchapter at the
Packing Group II performance level. Type F organic peroxides or self-
reactive substances are not authorized for transportation in IBCs other
than those specified, unless approved by the Associate Administrator.
(1) IBCs shall be provided with a device to allow venting during
transportation. The inlet to the pressure relief device shall be sited
in the vapor space of the IBC under maximum filling conditions during
transportation.
(2) To prevent explosive rupture of metal IBCs or composite IBCs
with a complete metal casing, the emergency-relief devices shall be
designed to vent all the decomposition products and vapors evolved
during self-accelerating decomposition or during a period of not less
than one hour of complete fire-engulfment as calculated by the formula
in paragraph (h)(3)(v) of this section. The control and emergency
temperatures specified in the Organic Peroxide IBC Table are based on a
non-insulated IBC.
[[Page 563]]
(g) Organic Peroxide Portable Tank Table. The following Organic
Peroxide Portable Tank Table provides certain portable tank requirements
and identifies, by technical name, those organic peroxides that are
authorized for transportation in the bulk packagings listed in paragraph
(h). Organic peroxides listed in this table, provided they meet the
specific packaging requirements found in paragraph (h), are not subject
to the approval provisions of Sec. 173.128 of this part.
[[Page 564]]
Organic Peroxide Portable Tank Table
--------------------------------------------------------------------------------------------------------------------------------------------------------
Minimum Minimum shell
Hazardous test thickness (mm- Bottom opening Pressure-relief Control Emergency
UN No. material pressure reference steel) requirements See. requirements See. Filling limits temperature temperature
(bar) See. . . . . . .
--------------------------------------------------------------------------------------------------------------------------------------------------------
3109....... ORGANIC
PEROXIDE, TYPE
F, LIQUID.
tert-Butyl 4 Sec. Sec. Sec. Not more than 90% at
hydroperoxide, 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
not more than [deg]C)
72% with water.
*Provided that
steps have been
taken to
achieve the
safety
equivalence of
65% tert-Butyl
hydroperoxide
and 35% water.
Cumyl hydro- 4 Sec. Sec. Sec. Not more than 90% at
peroxide, not 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
more than 90% [deg]C)
in diluent type
A.
Di-tert-butyl 4 Sec. Sec. Sec. Not more than 90% at
peroxide, not 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
more 32% in [deg]C)
diluent type A.
Dicumyl 4 Sec. Sec. Sec. Not more than 90% at
peroxide, less 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
than or equal [deg]C)
to 100% in
diluent type B.
Isopropyl cumyl 4 Sec. Sec. Sec. Not more than 90% at
hydro-peroxide, 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
not more than [deg]C)
72% in diluent
type A.
p-Menthyl hydro- 4 Sec. Sec. Sec. Not more than 90% at
peroxide, not 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
more than 72% [deg]C)
in diluent type
A.
Pinanyl hydro- 4 Sec. Sec. Sec. Not more than 90% at
peroxide, not 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
more than 56% [deg]C)
in diluent type
A.
3110....... ORGANIC
PEROXIDE, TYPE
F, SOLID.
Dicumyl peroxide 4 Sec. Sec. Sec. Not more than 90% at
less than or 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
equal to 100% [deg]C)
with inert
solids.
*Maximum
quantity per
portable tank
2,000 kg.
3119....... ORGANIC
PEROXIDE, TYPE
F, LIQUID,
TEMPERATURE
CONTROLLED.
tert-Butyl 4 Sec. Sec. Sec. Not more than 90% at +30 [deg]C +35 [deg]C
peroxyacetate, 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
not more than [deg]C)
32% in diluent
type B.
tert-Butyl 4 Sec. Sec. Sec. Not more than 90% at +15 [deg]C +20 [deg]C
peroxy-2- 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
ethylhexanoate, [deg]C)
not more than
32% in diluent
B.
tert- 4 Sec. Sec. Sec. Not more than 90% at +5 [deg]C +10 [deg]C
Butylperoxypiva 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
late, not more [deg]C)
than 27% in
diluent type B.
[[Page 565]]
tert-Butyl 4 Sec. Sec. Sec. Not more than 90% at +35 [deg]C +40 [deg]C
peroxy-3,5,5- 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
trimethyl- [deg]C)
hexanoate, not
more than 32%
in diluent type
B.
Di-(3,5,5- 4 Sec. Sec. Sec. Not more than 90% at 0 [deg]C +5 [deg]C
trimethyl- 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
hexanoyl) [deg]C)
peroxide, not
more than 38%
in diluent type
A.
Peroxyacetic 4 Sec. Sec. Sec. Not more than 90% at +30 [deg]C +35 [deg]C
acid, 178.274(d)(2) 178.275(d)(3) 178.275(g)(1) 59 [deg]F (15
distilled, [deg]C)
stabilized, not
more than 41%.
--------------------------------------------------------------------------------------------------------------------------------------------------------
[[Page 566]]
(h) Bulk packagings other than IBCs. The following bulk packagings
are authorized, subject to the conditions and limitations of this
section, if the organic peroxide is listed in the Organic Peroxide
Portable Tank Table and bulk packagings are authorized, or if the
organic peroxide is specifically authorized for transport in a bulk
packaging by this paragraph (h), and the bulk packaging conforms to the
requirements of this subchapter:
(1) Rail cars. Class DOT 103, 104, 105, 109, 111, 112, 114, 115, or
120 fusion-weld tank car tanks are authorized. DOT 103W, 111A60F1 and
111A60W1 tank car tanks must have bottom outlets effectively sealed from
inside. Gauging devices are required on DOT 103W tank car tanks. Riveted
tank car tanks are not authorized.
(2) Cargo tanks. Specification MC 307, MC 310, MC 311, MC 312, DOT
407, and DOT 412 cargo tank motor vehicles with a tank design pressure
of at least 172 kPa (25 psig) are authorized.
(3) Portable tanks. The following requirements apply to portable
tanks intended for the transport of organic peroxides or self-reactive
substances. DOT 51, 57, IM 101 portable tanks, and UN portable tanks
that conform to the requirements of paragraph (g) of this section, are
authorized. Type F organic peroxide or self-reactive substance
formulations other than those indicated in the Organic Peroxide Portable
Tank Table may be transported in portable tanks if approved by the
Associate Administrator. The following conditions also apply:
(i) The portable tank must be designed for a test pressure of at
least 0.4 MPa (4 bar).
(ii) The portable tank must be fitted with temperature-sensing
devices.
(iii) The portable tank must be fitted with pressure relief devices
and emergency-relief devices. Vacuum-relief devices may also be used.
Pressure relief devices must operate at pressures determined according
to both the properties of the hazardous material and the construction
characteristics of the portable tank. Fusible elements are not allowed
in the shell.
(iv) The pressure relief devices must consist of reclosing devices
fitted to prevent significant build-up within the portable tank of the
decomposition products and vapors released at a temperature of 50 [deg]C
(122 [deg]F). The capacity and start-to-discharge pressure of the relief
devices must be in accordance with the applicable requirements of this
subchapter specified for the portable tank. The pressure relief devices
must not allow liquid to escape in the event the portable tank is
overturned in a loaded condition.
(v)(A) The emergency-relief devices may be of the reclosing or
frangible types, or a combination of the two, designed to vent all the
decomposition products and vapors evolved during a period of not less
than one hour of complete fire engulfment as calculated by the following
formula:
[GRAPHIC] [TIFF OMITTED] TR20DE04.002
Where:
q = heat absorption (W)
A = wetted area (m\2\)
F = insulation factor (-)
(B) Insulation factor (F) in the formula in paragraph (h)(3)(v)(A)
of this section equals 1 for non-insulated vessels and for insulated
vessels F is calculated using the following formula:
[GRAPHIC] [TIFF OMITTED] TR20DE04.003
Where:
U = K/L = heat transfer coefficient of the insulation
(W[middot]m-2[middot]K-1); where K = heat
conductivity of insulation layer
(W[middot]m-1[middot]K-1), and L = thickness of
insulation layer (m).
TPO = temperature of material at relieving conditions (K).
(vi) The start-to-discharge pressure of emergency-relief devices
must be higher than that specified for the pressure relief devices in
paragraph (h)(3)(iv) of this section. The emergency-relief devices must
be sized and designed in such a way that the maximum pressure in the
shell never exceeds the test pressure of the portable tank.
Note to paragraph (h)(3)(vi): An example of a method to determine
the size of emergency-relief devices is given in Appendix 5 of the UN
Manual of Tests and Criteria (IBR, see Sec. 171.7 of this subchapter).
A second example of a test method for venting sizing is given in the
American Institute of Chemical Engineers Process Safety Progress
Journal,
[[Page 567]]
June 2002 issue (Vol. 21, No. 2) (Informational materials not requiring
incorporation by reference, see Sec. 171.7(b)).
(vii) For insulated portable tanks, the capacity and setting of
emergency-relief devices must be determined assuming a loss of
insulation from 1% of the surface area.
(viii) Vacuum-relief devices and reclosing devices on portable tanks
used for flammable hazardous materials must be provided with flame
arresters. Any reduction of the relief capacity caused by the flame
arrester must be taken into account and the appropriate relief capacity
must be provided.
(ix) Service equipment such as devices and external piping must be
designed and constructed so that no hazardous material remains in them
after filling the portable tank.
(x) Portable tanks may be either insulated or protected by a sun-
shield. If the SADT of the hazardous material in the portable tank is 55
[deg]C (131 [deg]F) or less, the portable tank must be completely
insulated. The outer surface must be finished in white or bright metal.
(xi) The degree of filling must not exceed 90% at 15 [deg]C (59
[deg]F).
(xii) DOT 57 metal portable tanks are authorized only for those
materials or mixtures of two or more materials that are provided with a
reference to Note 9 in Column 8 of the Organic Peroxide Table, found in
paragraph (c) of this section. DOT 57 portable tanks must conform to the
venting requirements of paragraph (f) of this section. These portable
tanks are not subject to any other requirements of paragraph (h) of this
section.
(4) For tertiary butyl hydroperoxide (TBHP), each tank car, cargo
tank or portable tank must contain 7.6 cm (3.0 inches) low density
polyethylene (PE) saddles having a melt index of at least 0.2 grams per
10 minutes (for example see, ASTM D1238, condition E) as part of the
lading, with a ratio of PE to TBHP over a range of 0.008 to 0.012 by
mass. Alternatively, plastic or metal containers equipped with fusible
plugs having a melting point between 69 [deg]C (156 [deg]F) and 71
[deg]C (160 [deg]F) and filled with a sufficient quantity of water to
dilute the TBHP to 65% or less by mass may be used. The PE saddles must
be visually inspected after each trip and, at a minimum, once every 12
months, and replaced when discoloration, fracture, severe deformation,
or other indication of change is noted.
[69 FR 76159, Dec. 20, 2004, as amended at 70 FR 34398, June 14, 2005]