O-Phenylenediamineo-Phenylenediamine (OPD) is an organic compound with the formula C6H4(NH2)2. This aromatic diamine is an important precursor to many heterocyclic compounds. OPD is a white compound although samples appear darker owing to oxidation by air. Read from the Chembox of the Wikipedia article O-Phenylenediamine, revision 1379977128.

Property

Value

Formula

C6H8N2, 108.14 g/mol

Melting point

103 °C

Boiling point

252 °C

Density

1.031 g/cm³

Flash point

156 °C

pKa

0.8

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