2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-(2,4,5-trimethylphenyl)diazenyl]-, sodium salt (1:2) cas no:3564-09-8

Name2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-(2,4,5-trimethylphenyl)diazenyl]-, sodium salt (1:2)
CAS3564-09-8
Synonyms2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[(2,4,5-trimethylphenyl)azo]-, disodium salt (9CI); Ponceau3R (6CI); C.I. 16155; D and C Red 15; Disodium3-hydroxy-4-[(2,4,5-trimethylphenyl)azo]-2,7-naphthalenedisulfonate; DolkwalPonceau 3R; Ext D and C Red No. 15; FD and C Red No. 1; FD&C Red No. 1; FDCRed 1; Japan Red 1; Japan Red 502; Maple Ponceau 3R; Ponceau 3R Lake; Ponceau3R sodium salt; Ponceau 3RN; Scarlet F; Usacert Red No. 1
EINECS(EC#)222-638-0
Molecular FormulaC19H18 N2 O7 S2 . 2 Na
Molecular Weight494.47

Hazard Prohibited by FDA for use in foods, drugs, cosmetics.
Risk R20/21/22
Safety

Confirmed carcinogen with experimental carcinogenic and tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NO_x and SO_x.Safety information of Ponceau 3r (CAS NO.3564-09-8):
Risk Statements 
20/21/22 Harmful by inhalation, in contact with skin and if swallowed
Safety Statements 
22 Do not breathe dust
36/37/39 Wear suitable protective clothing, gloves and eye/face protection
RTECS  QJ6650000

1.		mma-sat 660 nmol/plate		INFIBR    Infection and Immunity. 23 (1979),686.
2.		oth-esc 300 µmol/L		SKEZAP    Shokuhin Eiseigaku Zasshi. Journal of the Food Hygiene Society of Japan. 12 (1971),298.
3.		orl-rat TDLo:730 g/kg/2Y-C:CAR		TXAPA9    Toxicology and Applied Pharmacology. 5 (1963),105.