Catalog Number
ACMA00017160
Product Name
p-Phenylenediamine
Description
P-phenylenediamine appears as a white to purple crystalline solid (melting point 234 F) that turns purple to black in air. Flash point 309 F. Toxic by skin absorption, inhalation or ingestion. Used for production of aramid fiber, antioxidants, as a laboratory reagent, in photographic developing, and as a dye for hair and furs.;Liquid; PelletsLargeCrystals;WHITE-TO-SLIGHTLY-RED CRYSTALS. TURNS DARK ON EXPOSURE TO AIR.;White to slightly red, crystalline solid.;White to slightly red, crystalline solid.
IUPAC Name
benzene-1,4-diamine
Molecular Weight
108.14g/mol
Molecular Formula
C6H8N2;C6H4(NH2)2;C6H8N2
Canonical SMILES
C1=CC(=CC=C1N)N
InChI
InChI=1S/C6H8N2/c7-5-1-2-6(8)4-3-5/h1-4H,7-8H2
InChI Key
CBCKQZAAMUWICA-UHFFFAOYSA-N
Boiling Point
513 °F at 760 mm Hg (NTP, 1992);267.0 °C;267 °C;267 °C;513°F;513°F
Melting Point
284 °F (NTP, 1992);146.0 °C;145-147 °C;139-147 °C;295°F;295°F
Flash Point
311 °F (NTP, 1992);156 °C c.c.;312°F;312°F
Density
Greater than 1 (water= 1);Relative density (water = 1): 1.1
Solubility
4 % at 75° F (NIOSH, 2016);0.34 M;SOL IN 100 PARTS COLD WATER; SOL IN ALCOHOL, CHLOROFORM, ETHER;SOL IN HOT BENZENE;Water solubility= 38,000 ppm;Solubility in water, g/100ml at 25 °C: 4;(75°F): 4%
Color/Form
WHITE TO SLIGHTLY RED CRYSTALS;WHITE PLATES FROM BENZENE, ETHER
Covalently-Bonded Unit Count
1
Exact Mass
108.068748g/mol
Log P
-0.3 (LogP);log Kow= -0.25
MeSH Entry Terms
1,4-benzenediamine;1,4-phenyldiamine;1,4-phenylenediamine;4-phenylenediamine;4-phenylenediamine bromide, ion(1+);4-phenylenediamine dihydrochloride;4-phenylenediamine diperchlorate;4-phenylenediamine ion (1+);4-phenylenediamine monohydrobromide;4-phenylenediamine monohydrochloride;4-phenylenediamine monohydroiodide;4-phenylenediamine monooxalate;4-phenylenediamine monoperchlorate;4-phenylenediamine monosulfate;4-phenylenediamine sulfate;black henna;p-phenylenediamine;para-phenylenediamine;paraphenylenediamine;Ursol-D
Monoisotopic Mass
108.068748g/mol
Other Experimental
BLACK COLOR DEVELOPED WITH 3% HYDROGEN PEROXIDE, BROWN WITH 5% IRON CHLORIDE SOLN, DARKENS ON EXPOSURE TO AIR.
Stability
ON STANDING IN AIR, OXIDIZES TO PURPLE AND BLACK /COLOR/.
UN Number
1673;1673;1673;1673;1673
Vapor Density
3.72 (NTP, 1992) (Relative to Air);3.72 (AIR= 1);Relative vapor density (air = 1): 3.7;3.72
Vapor Pressure
less than 1 mm Hg (NIOSH, 2016);<1 mm Hg at 21 °C (technical product);Vapor pressure, Pa at 100 °C: 144;<1 mmHg;<1 mmHg
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