| CAS RN | 95-54-5 |
| Product Name | 邻苯二胺（OPD） o-Phenylenediamine |
| Molecular Formula | C6H8N2
C6H4(NH2)2
C6H8N2 |
| Molecular Weight | 108.14 g/mol |
| IUPAC Name | benzene-1,2-diamine |
| InChI | InChI=1S/C6H8N2/c7-5-3-1-2-4-6(5)8/h1-4H,7-8H2 |
| InChI Key | GEYOCULIXLDCMW-UHFFFAOYSA-N |
| SMILES | C1=CC=C(C(=C1)N)N |
| Canonical SMILES | C1=CC=C(C(=C1)N)N |
| Boiling Point | 493 to 496 °F at 760 mm Hg (NTP, 1992)
257.0 °C
257 °C
256-258 °C
493-496°F |
| Color/Form | Brownish-yellow leaflets from water; plates from chloroform
Tan crystals or leaflets from water
White crystalline solid when pure |
| Flash Point | 313 °F (NFPA, 2010)
313 °F; 156 °C (Closed cup)
156 °C c.c.
313°F |
| Melting Point | 216 to 219 °F (NTP, 1992)
102.5 °C
102.1 °C
103-104 °C
216-219°F |
| Other CAS RN | 95-54-5 |
| Physical Description | 1,2-phenylenediamine appears as colorless monoclinic crystals if pure; technical grade brownish-yellow crystals or a sandy brown solid. Used in manufacture of dyes, photography, organic synthesis.
DryPowder; Liquid
BROWN-TO-YELLOW CRYSTALS. TURNS DARK ON EXPOSURE TO LIGHT.
Colorless monoclinic crystals if pure; technical grade brownish-yellow crystals or a sandy brown solid. |
| Pictograms | Acute Toxic; Irritant; Health Hazard; Environmental Hazard |
| Related CAS | 615-28-1 (di-hydrochloride) |
| Solubility | less than 1 mg/mL at 68° F (NTP, 1992)
Freely soluble in alcohol, chloroform, ether
Soluble in water, ethyl ether, benzene, chloroform; very soluble in ethanol
In water, 4.07X10+4 mg/L at 35 °C
Solubility in water, g/100ml at 35 °C: 0.4 |
| Synonyms | 1,2-Benzenediamine; o-Phenylenediamine; 1,2-Diaminobenzene; 2-Aminoaniline; C.I. 76010; C.I. Oxidation Base 16; IK 3; NSC 5354; Orthamine; o-Aminoaniline; o-Aminophenylamine; o-Benzenediamine; o-Diaminobenzene |
| Vapor Density | Relative vapor density (air = 1): 3.73 |
| Vapor Pressure | 0.00 mmHg
2.06X10-3 mm Hg at 25 °C
Vapor pressure, kPa at 20 °C: 0.0013 |
