Names
Preferred IUPAC name: Benzene-1,4-diamine
Other names
Paraphenylenediamine
1,4-Diaminobenzene
1,4-Phenylenediamine
Identifiers
CAS Number: 106-50-3
JSmol: Interactive image
ChemSpider: 13835179
ECHA InfoCard: 100.003.096
KEGG: C19499
UNII: U770QIT64J
Properties
Chemical formula: C6H8N2
Molar mass: 108.14 g·mol
Appearance: White crystalline solid, darkens upon exposure to air
Melting point: 145 to 147 °C (293 to 297 °F; 418 to 420 K)
Boiling point: 267 °C (513 °F; 540 K)
Solubility in water: 10% at 40°C, 87% at 107 C, 100% at 140 C
Vapor pressure: <1 mmHg (20°C)
Magnetic susceptibility: -70.28·10 cm/mol−63
Hazards
R-phrases: R23 R24 R25 R36 R37 R38 R40 R42 R43
S-phrases: S26 S36 S37 S39
Flash point: 156 °C; 312 °F; 429 K
LD
median dose: 80 mg/kg (rat, oral)
98 mg/kg (rat, oral)
145 mg/kg (guinea pig, oral)
lowest published: 250 mg/kg (rabbit, oral)
100 mg/kg (cat, oral)
NIOSH
PEL: TWA 0.1 mg/m [skin]3
REL: TWA 0.1 mg/m [skin]3
IDLH: 25 mg/m3
Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).
Infobox references
