Acid Orange 33

酸性橙33

Also known as: 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-(1-(4-((4-hydroxyphenyl)azo)phenyl)cyclohexyl)phenyl)azo)-, disodium salt, 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-[(E)-2-[4-[1-[4-[(E)-2-(4-hydroxyphenyl)diazenyl]phenyl]cyclohexyl]phenyl]diazenyl]-, sodium salt (1:2), C.I. 24780, C.I. Acid Orange 33, Coomassie Orange g, CoomassieFastOrangeGC.I.24780, Disodium 7-hydroxy-8-((4-(1-(4-((4-hydroxyphenyl)azo)phenyl)cyclohexyl)phenyl)azo)naphthalene-1,3-disulphonate, Disodium 7-hydroxy-8-{(E)-[4-(1-{4-[(E)-(4-hydroxyphenyl)diazenyl]phenyl}cyclohexyl)phenyl]diazenyl}-1,3-naphthalenedisulfonate, Orange 33, Telon Fast Oraneg G, Tracid Orange GS, Weak Acid Orange GS, Weak acid orange, disodium 7-hydroxy-8-[[4-[1-[4-[(4-hydroxyphenyl)azo]phenyl]cyclohexyl]phenyl]azo]naphthalene-1,3-disulphonate, disodium,(8Z)-7-oxo-8-[[4-[1-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]phenyl]cyclohexyl]phenyl]hydrazinylidene]naphthalene-1,3-disulfonate, einecs 229-396-5

Acid Orange 33 (CAS 6507-77-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C34H28N4Na2O8S2 and a molecular weight of 730.718 g/mol. It is also known as 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-(1-(4-((4-hydroxyphenyl)azo)phenyl)cyclohexyl)phenyl)azo)-, disodium salt, 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-[(E)-2-[4-[1-[4-[(E)-2-(4-hydroxyphenyl)diazenyl]phenyl]cyclohexyl]phenyl]diazenyl]-, sodium salt (1:2) and C.I. 24780. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

6507-77-3

Jingsj CID

J-1041336-8

Molecular Formula

C₃₄H₂₈N₄Na₂O₈S₂

Chinese Name

酸性橙33

Molecular Weight

730.718 g/mol

Category

Organic Acids

Last updated

8/21/2026