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Ponceau 3R

CAS Number

3564-09-8

Synonym

3-Hydroxy-4-[2,4,5-trimethylphenyl)azo]-2,7-naphthalenedisulfonic acid; Disodium 3-hydroxy-4-((2,4,5-trimethylphenyl)azo)-2,7-napthalenedisumphonic acid; Dolkwal ponceau 3R; FD&C Red No. 1; Maple ponceau 3R; Ponceau 3R sodium salt; Sodium cumeneazo-beta-napthol disulfonate; Usacert red no. 1

Occurrence/Use

Dye for wool, biological stain. Banned by the FDA for use in food (1960) and externally applied drugs or cosmetics (1966) in the US.

Cancer Potency Information

Latest Criteria: 
Proposition 65 NSRLs/MADLs
Inhalation Unit Risk (μg/cubic meter)-1: 
4.6 E-6
Inhalation Slope Factor (mg/kg-day)-1: 
1.6 E-2
Oral Slope Factor (mg/kg-day)-1: 
1.6 E-2
Comments/References: 

Proposition 65

Chemical Status

Cancer: 
Currently listed

Cancer

Listed as causing: 
Cancer
Date of Listing: 
04/01/1988
Basis for Listing: 
State's Qualified Experts

Safe Harbor Levels

Cancer
No Significant Risk Level (NSRL): 
40 µg/day
Last NSRL/MADL Revision: 
1992

Documents, Presentations, and Publications

Cancer: