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:

OEHHA 1992. Expedited Cancer Potency Values and Proposed Regulatory Levels for Certain Proposition 65 Carcinogens.

Proposition 65

Chemical Status

Cancer: Currently listed

Cancer

Cancer - Listing Mechanism
State's Qualified Experts
Listed as causing : Listed as causing: Cancer
Date of Listing:

Safe Harbor Levels

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

Documents, Presentations, and Publications

Cancer: