Testing Information

Testing Status of Agents at NTP

CAS Registry Number: 75-91-2

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http://ntp.niehs.nih.gov/go/21956

Selected information from two of the National Library of Medicine's databases: ChemIDPlus1 and HSDB2.

Names (NTP)

  • tert-Butyl hydroperoxide
  • CADOX TBH
  • 1,1-DIMETHYLETHYLHYDROPEROXIDE
  • 2-HYDROPEROXY-2-METHYLPROPANE
  • LUPEROX TBH70

Structure

Chemical Structure for CAS Registry Number 75-91-2 from NLM

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Chemical Properties2

Property Description
Color/Form
  • Water-white liquid
Odor
  • None found
Taste
  • None found
Boiling Point
  • 35 deg C @ 20 mm Hg
Melting Point
  • -8 deg C
Molecular Weight
  • 90.12
Corrosivity
  • None found
Critical Temperature & Pressure
  • None found
Density/Specific Gravity
  • 0.8960 @ 20 deg C
Disassociation Constants
  • pKa = 12.8 @ 20 deg C
Heat of Combustion
  • None found
Heat of Vaporization
  • None found
log P (octanol-water)
  • None found
pH
  • None found
Solubilities
  • Soluble in water, ethanol, ethyl ether, and carbon tetrachloride.
  • Moderately soluble in water; very soluble in organic solvents and alkali-metal hydroxide solutions.
  • Slightly soluble in water, very soluble in esters and alcohols.
Spectral Properties
  • Index of refraction= 1.4015 @ 20 deg C/D
  • IR: 10810 (Sadtler Research Laboratories IR Grating Collection)
  • NMR: 4209 (Sadtler Research Laboratories Spectral Collection)
Surface Tension
  • None found
Vapor Density
  • 2.07 (Air= 1)
Vapor Pressure
  • 5.46 mm Hg @ 25 deg C
Relative Evaporation Rate
  • None found
Viscosity
  • None found
Other Properties
  • A highly reactive peroxy compound; decomposes at 75 deg C.
  • SELF-ACCELERATING DECOMP TEMP 190-200 DEG F
  • Decomposes at 89 deg C
  • Slow first-order decomposition can be accelerated by the presence of 1 mol-% of Cu, Co and Mn salts. Stable to 75 deg C.
  • FP: -35 deg C
  • Hydroxyl radical rate constant= 3.00X10-12 cu cm/molecule-sec @ 25 deg C

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Uses2

  • For tert-Butyl Hydroperoxide (USEPA/OPP PC Code: 105301) there are 0 labels match. /SRP: Not registered for current use in the U.S./
  • To introduce peroxy group into org mol; in radical substitution reactions; catalyst in polymerization reactions.
  • Polymerization, oxidation, sulfonation catalyst, bleaching, deodorizing
  • PRINCIPALLY CHEM INT FOR PROPYLENE OXIDE & T-BUTYL ALCOHOL; SMALL AMT AS CURING AGENT FOR THERMOSET POLYESTERS; INITIATOR FOR VINYL CHLORIDE POLYMERIZATION & COPOLYMERIZATION; SMALL AMT AS CHEM INT FOR ADHESIVES, PLASTICS, RUBBER & ELASTOMERS **PEER REVIEWED**
  • t-Butyl hydroperoxide/hydroxylamine hydrochloride is one of the most widely used cationic emulsion polymerization initiator systems
  • Used to prepare epichlorohydrin by an epoxidation reaction with allyl chloride over vanadium, tungsten or molybdenum complexes or by oxidation with air over cobalt
  • A significant outlet for /tert-butyl hydroperoxide/ is the molybedenum-complex catalyzed production of propylene oxide.
  • ... used as polymerization catalysts, cross-liking agents, and oxidants /Peroxides and peroxy compounds/
  • Low-temperature, heat-cured polyester resin curing agent; polyvinyl chloride suspension polymerization initiator
  • ...an intermediate in the production of propylene oxide and t-butyl alcohol from isobutane and propylene...used as an initiator and finishing catalyst in the solution and emulsion polymerization methods for polystyrene and polyacrylates...used in the polymerization of vinyl chloride and vinyl acetate...an oxidation and sulfonation catalyst in bleaching and deodorizing operations...an anti-slime agent in cooling systems and a settling agent in aqueous slurries of various mineral tailings.
  • ... An intermediate in the production of propylene oxide and t-butyl alcohol from isobutane and propylene. TBHP, however, is primarily used as an initiator and finishing catalyst in the solution and emulsion polymerization methods for polystyrene and polyacrylates. It is used in the polymerization of vinyl chloride and vinyl acetate. It is used as an oxidation and sulfonation catalyst in bleaching and deodorizing operations.

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Superlist Classes1

  • None found

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Notes (Sources: NTP,HSDB,RTECS,MESH)1

  • None found

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Other Registry Numbers1

  • None found

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Synonyms (Sources: NTP, HSDB,RTECS,MESH)1

  • 4-01-00-01616 (Beilstein Handbook Reference)
  • BRN 1098280
  • Cadox TBH
  • 1,1-Dimethylethyl hydroperoxide
  • HSDB 837
  • Hydroperoxide, tert-butyl
  • Hydroperoxide, 1,1-dimethylethyl
  • 2-Hydroperoxy-2-methylpropane
  • Perbutyl H
  • TBHP-70
  • Trigonox A-W70

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Links to Additional Information1

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Footnotes

1 Source: the National Library of Medicine's ChemIDPlus, 10/28/2007.

2 Source: the National Library of Medicine's Hazardous Substance Database, 10/28/2007.

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Web page last updated on May 14, 2008