Acid Orange 3

酸性橙3

Also known as: C.I. 10385, C.I. Acid Orange 3, 2-anilino-5-(2,4-dinitroanilino)benzenesulfonic acid monosodium salt, Benzenesulfonic acid, 5-(2,4-dinitrophenyl)amino-2-(phenylamino)-, monosodium salt, sodium 5-[(2,4-dinitrophenyl)amino]-2-(phenylamino)benzenesulfonate, Acid Orange R, Acid fast yellow ag, Acid fast yellow e5r, Acid leather light brown g, Covalene Orange E, Dyacid Yellow A, Fast Yellow Light, Multacid Yellow 3R, Vicoacid Orange 3, Yellow 3R, Anadurm Orange A-E

Acid Orange 3 (CAS 6373-74-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H13N4NaO7S and a molecular weight of 452.373 g/mol. It is also known as C.I. 10385, C.I. Acid Orange 3 and 2-anilino-5-(2,4-dinitroanilino)benzenesulfonic acid monosodium salt. Key property: a melting point of 204ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

6373-74-6

Jingsj CID

J-1099177-4

Molecular Formula

C₁₈H₁₃N₄NaO₇S

Chinese Name

酸性橙3

Molecular Weight

452.373 g/mol

Category

Organic Acids

Last updated

8/21/2026