Agent Name

Ponceau S

CAS Number

6226-79-5

Formula

C22-H16-N4-O13-S4.4Na

Major Category

Dyes

Synonyms

2-Hydroxy-1-((4((4-sulfophenyl)azo)-2-sulfophenyl)azo)naphthalene-3,6-disulfonic acid, tetrasodium salt; C.I. 27195; C.I. Acid Red 112; Ponceau Red S; Ponceau S Extra; 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-((2-sulfo-4-((4-sulfophenyl)azo)phenyl)azo)-, tetrasodium salt; 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-(2-(2-sulfo-4-(2-(4-sulfophenyl)diazenyl)phenyl)diazenyl)-, sodium salt (1:4); C.I. Acid Red 112, tetrasodium salt (8CI); Tetrasodium 3-hydroxy-4-(2-sulphonato-4-(4-sulphonatophenylazo)phenylazo)naphthalene-2,7-disulphonate; [ChemIDplus]

Category

Azo Dyes

Description

Dark reddish-brown to brown powder; [Eastman Kodak MSDS]

Sources/Uses

Used as an industrial ink or inkjet chemical; [Eastman Kodak MSDS]

Comments

An irritant; May cause delayed lung injury; [Eastman Kodak MSDS]

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