1,2-Phenylenediamine

• CAT Number: R051671
• CAS Number: 95-54-5
• Molecular Formula: C6H8N2
• Molecular Weight: 108.14
• Purity: ≥95%
• 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
• Storage: -20°C
• IUPAC Name: benzene-1,2-diamine
• InChI: InChI=1S/C6H8N2/c7-5-3-1-2-4-6(5)8/h1-4H,7-8H2
• InChIKey: GEYOCULIXLDCMW-UHFFFAOYSA-N
• SMILES: C1=CC=C(C(=C1)N)N

1,2-Phenylenediamine(Cat No.: R051671), also known as o-phenylenediamine, is an aromatic diamine with the molecular formula C₆H₈N₂. It consists of a benzene ring substituted with two amino groups in the ortho (1,2-) positions. This compound is widely used as an intermediate in the synthesis of dyes, polymers, agrochemicals, and pharmaceuticals. It serves as a key building block for heterocycles such as benzimidazoles. Due to its reactivity, 1,2-phenylenediamine also finds applications in rubber vulcanization and as a developer in photographic and analytical chemistry.