2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-[2-sulfo-4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-,sodium salt (1:4) cas no:6226-79-5
Synonyms: 2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-, tetrasodiumsalt (9CI);C.I. Acid Red 112, tetrasodium salt (8CI);Ponceau S (6CI);C.I.Acid Red 112;Ponceau Red S;Ponceau S Extra;
Name2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-[2-sulfo-4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-,sodium salt (1:4)
CAS6226-79-5
Synonyms2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-, tetrasodiumsalt (9CI);C.I. Acid Red 112, tetrasodium salt (8CI);Ponceau S (6CI);C.I.Acid Red 112;Ponceau Red S;Ponceau S Extra;
EINECS(EC#)228-319-2
Molecular FormulaC22H12N4Na4O13S4
Molecular Weight760.57
AppearanceBrown powder.
refractive indexn20/D 1.338
storage tempStore at RT.
Hazard Xi:Irritant;
Risk R36/37/38
Safety
Hazard Codes: 
Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
S37/39:Wear suitable gloves and eye/face protection.
WGK Germany: 3
RTECS: QJ6600000
HS Code: 32041200
HS Code 32041200
