Testing Information

Testing Status of Agents at NTP

CAS Registry Number: 95-78-3

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http://ntp.niehs.nih.gov/go/21519

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

Names (NTP)

  • 2,5-Xylidine
  • BENZENAMINE,2,5-DIMETHYL (9CI)

Structure

Chemical Structure for CAS Registry Number 95-78-3 from NLM

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Chemical Properties2

Property Description
Color/Form
  • YELLOW LEAF FROM PETROLEUM ETHER
  • Colorless to yellow oil
  • Yellow liquid or solid
Odor
  • None found
Taste
  • None found
Boiling Point
  • 214 DEG C @ 760 MM HG
Melting Point
  • 15.5 DEG C
Molecular Weight
  • 121.18
Corrosivity
  • None found
Critical Temperature & Pressure
  • None found
Density/Specific Gravity
  • 0.9790 @ 21 DEG C/4 DEG C
Disassociation Constants
  • pKa= 4.53 at 25 deg C
Heat of Combustion
  • None found
Heat of Vaporization
  • None found
log P (octanol-water)
  • log Kow = 1.83 at pH 7.4
pH
  • None found
Solubilities
  • Sol in ether, carbon tetrachloride
  • SLIGHTLY SOL IN ETHANOL
  • Soluble in oxygenated solvents.
  • 5600 mg/l at 12 deg C in water
Spectral Properties
  • Index of refraction: 1.5591 @ 21 deg C/D
  • IR: 6973 (Coblentz Society Spectral Collection)
  • UV: 5399 (Sadtler Research Laboratories Spectral Collection)
  • NMR: 3276 (Sadtler Research Laboratories Spectral Collection)
  • MAX ABSORPTION (ISOOCTANE): 236 NM (LOG E= 3.88); 288 NM (LOG E= 3.39)
  • SADTLER REF NUMBER: 17112 (IR, PRISM)
Surface Tension
  • None found
Vapor Density
  • None found
Vapor Pressure
  • 0.15 mm Hg at 25 deg C
Relative Evaporation Rate
  • None found
Viscosity
  • None found
Other Properties
  • Forms more or less sol salts with the strong mineral acids /Xylidine/
  • All /isomers/ except ortho-4-xylidine are liquids above 20 deg C /Xylidine/

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Uses2

  • CHEM INT FOR SOLVENT RED 26, DIRECT VIOLET 7 **PEER REVIEWED**
  • Used as a chemical intermediate for the synthesis of Direct Yellow 51, Solvent Red 22, Solvent Red 26.
  • Used in the manufacture of p-xyloquinone; Direct Violet 7

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Superlist Classes1

  • Overall Carcinogenic Evaluation: Group 3

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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

  • 1-Amino-2,5-dimethylbenzene
  • 3-Amino-1,4-dimethylbenzene
  • 5-Amino-1,4-dimethylbenzene
  • 2-Amino-1,4-xylene
  • Aniline, 2,5-dimethyl-
  • Benzenamine, 2,5-dimethyl-
  • Benzene, 2-amino-1,4-dimethyl-
  • 2,5-Dimethylaniline
  • 2,5-Dimethylbenzenamine
  • 2,5-Dimethylphenylamine
  • HSDB 2093
  • 5-Methyl-o-toluidine
  • 6-Methyl-m-toluidine
  • para-Xylidine
  • p-Xylidine

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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