calcium dihydrogen bis[4-[(4-chloro-6-sulphonato-m-tolyl)azo]-3-hydroxy-2-naphthoate]

4-[2-(4-氯-5-甲基-2-磺酸苯基)偶氮]-3-羟基-2-萘甲酸钙盐

Also known as: C.I. Pigment Red 52:1, Calcium dihydrogen bis(4-((4-chloro-6-sulphonato-m-tolyl)azo)-3-hydroxy-2-naphthoate), 2-Naphthalenecarboxylic acid, 4-((4-chloro-5-methyl-2-sulfophenyl)azo)-3-hydroxy-, calcium salt (2:1), 2-Naphthalenecarboxylic acid, 4-(2-(4-chloro-5-methyl-2-sulfophenyl)diazenyl)-3-hydroxy-, calcium salt (2:1), calcium,(4E)-4-[(4-chloro-5-methyl-2-sulfophenyl)hydrazinylidene]-3-oxonaphthalene-2-carboxylate, EINECS 257-731-5

calcium dihydrogen bis[4-[(4-chloro-6-sulphonato-m-tolyl)azo]-3-hydroxy-2-naphthoate] (CAS 52202-90-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C36H24CaCl2N4O12S2 and a molecular weight of 879.70900 g/mol. It is also known as C.I. Pigment Red 52:1, Calcium dihydrogen bis(4-((4-chloro-6-sulphonato-m-tolyl)azo)-3-hydroxy-2-naphthoate) and 2-Naphthalenecarboxylic acid, 4-((4-chloro-5-methyl-2-sulfophenyl)azo)-3-hydroxy-, calcium salt (2:1). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

52202-90-1

Jingsj CID

J-977262-3

Molecular Formula

C₃₆H₂₄CaCl₂N₄O₁₂S₂

Chinese Name

4-[2-(4-氯-5-甲基-2-磺酸苯基)偶氮]-3-羟基-2-萘甲酸钙盐

Molecular Weight

879.70900 g/mol

Category

Organic Acids

Last updated

8/21/2026