2,7-Naphthalenedisulfonic acid, 4-((2,4-dihydroxy-5-((2-hydroxy-3,5-dinitrophenyl)azo)-3-((4-nitrophenyl)azo)phenyl)azo)-5-hydroxy-, disodium salt

4-[[2,4-二羟基-5-[(2-羟基-3,5-二硝基苯基)偶氮]3-[(4-硝基苯基)偶氮]苯基]偶氮]-5-羟基-2,7-萘二磺酸二钠盐

Also known as: C.I. Acid Brown 75, disodium 4-[[2,4-dihydroxy-5-[(2-hydroxy-3,5-dinitrophenyl)azo]-3-[(4-nitrophenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate, 4-[[2,4-Dihydroxy-5-[(2-hydroxy-3,5-dinitrophenyl)azo]-3-[(4-nitrophenyl)azo]phenyl]azo]-5-hydroxy-2,7-naphthalenedisulfonic acid disodium salt, 4-[[2,4-Dihydroxy-3-[(4-nitrophenyl)azo]-5-[(3,5-dinitro-2-hydroxyphenyl)azo]phenyl]azo]-5-hydroxy-2,7-naphthalenedisulfonic acid, disodium salt

2,7-Naphthalenedisulfonic acid, 4-((2,4-dihydroxy-5-((2-hydroxy-3,5-dinitrophenyl)azo)-3-((4-nitrophenyl)azo)phenyl)azo)-5-hydroxy-, disodium salt (CAS 6637-87-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C28H17N9NaO16S2+ and a molecular weight of 822.60500 g/mol. It is also known as C.I. Acid Brown 75, disodium 4-[[2,4-dihydroxy-5-[(2-hydroxy-3,5-dinitrophenyl)azo]-3-[(4-nitrophenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate and 4-[[2,4-Dihydroxy-5-[(2-hydroxy-3,5-dinitrophenyl)azo]-3-[(4-nitrophenyl)azo]phenyl]azo]-5-hydroxy-2,7-naphthalenedisulfonic acid disodium salt. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

6637-87-2

Jingsj CID

J-1355008-2

Molecular Formula

C₂₈H₁₇N₉NaO₁₆S₂

Chinese Name

4-[[2,4-二羟基-5-[(2-羟基-3,5-二硝基苯基)偶氮]3-[(4-硝基苯基)偶氮]苯基]偶氮]-5-羟基-2,7-萘二磺酸二钠盐

Molecular Weight

822.60500 g/mol

Category

Organic Acids

Last updated

8/21/2026