Agent Name

Ponceau MX

CAS Number




Major Category



1-(2,4-Xylylazo)-2-naphthol-3,6-disulfonic acid, disodium salt; 1-(2,4-Xylylazo)-2-naphthol-3,6-disulphonic acid, disodium salt; 1-Xylylazo-2-naphthol-3,6-disulfonic acid, disodium salt; 1-Xylylazo-2-naphthol-3,6-disulphonic acid, disodium salt; 1695 Red; 2,7-Naphthalenedisulfonic acid, 4-((2,4-dimethylphenyl)azo)-3-hydroxy-, disodium salt; 3-Hydroxy-4-(2,4-xylylazo)-2,7-naphthalenedisulfonic acid, disodium salt; 3-Hydroxy-4-(2,4-xylylazo)-2,7-naphthalenedisulphonic acid, disodium salt; 4-((2,4-Dimethylphenyl)azo)-3-hydroxy-2,7-naphthalenedisulfonic acid, disodium salt; 4-((2,4-Dimethylphenyl)azo)-3-hydroxy-2,7-naphthalenedisulphonic acid, disodium salt; Acetacid Red J; Acid Leather Red KPR; Acid Leather Red P2R; Acid Leather Scarlet IRW; Acid Ponceau 2RL; Acid Ponceau R; Acid Ponceau Special; Acid Red 26; Acid Scarlet; Acid Scarlet 2B; Acid Scarlet 2BN; Acid Scarlet 2R; Acid Scarlet 2R FOR Lakes Bluish; Acid Scarlet 2R For Lakes; Acid Scarlet 2RL; Acid Scarlet 2RN; Acidal Ponceau G; Acilan Ponceau RRL; Ahcocid Fast Scarlet R; Aizen Ponceau RH; Amacid Lake Scarlet 2R; Amacid Scarlet 2R; Brilliant Ponceau G; C.I. 16150; C.I. 79; C.I. Acid Red 26; C.I. Acid Red 26, disodium salt; C.I. Food Red 5; CI 16150; CI F Food Red 5; Calcocid 2RIL; Calcocid Scarlet 2R; Calcocid Scarlet 2RIL; Calcolake Scarlet 2R; Certicol Ponceau MXS; Cerven kysela 26 [Czech]; Cerven potravinarska 5 [Czech]; Colacid Ponceau Special; Comacid Scarlet 2R; D and C Red; D and C Red No. 5; D&C Red No. 5; Disodium (2,4-dimethylphenylazo)-2-hydroxynaphthalene-3,6-disulfonate; Disodium (2,4-dimethylphenylazo)-2-hydroxynaphthalene-3,6-disulphonate; Disodium salt of 1-(2,4-xylylazo)-2-naphthol-3,6-disulfonic acid; Disodium salt of 1-(2,4-xylylazo)-2-naphthol-3,6-disulphonic acid; Edicol Ponceau RS; Edicol Supra Ponceau R; Fenazo Scarlet 2R; Food Red No. 101; Hexacol Ponceau 2R; Hexacol Ponceau MX; Hidacid Scarlet 2R; Hispacid Ponceau R; Java Ponceau 2R; Kiton Ponceau 2R; Kiton Ponceau R; Kiton Scarlet 2RC; Lake Ponceau; Lake Scarlet 2RBN; Lake Scarlet R; Naphthalene Lake Scarlet R; Naphthalene Scarlet R; Naphthazine Scarlet 2R; Neklacid Red RR; New Ponceau 4R; Paper Red HRR; Pas kwasowy 2 RL; Pas kwasowy 2 RL [Polish]; Pigment Ponceau R; Ponceau 2R; Ponceau 2R (biological stain); Ponceau 2R Extra A Export; Ponceau 2RE; Ponceau 2RL; Ponceau 2RX; Ponceau BNA; Ponceau FR; Ponceau G; Ponceau G (VAN); Ponceau GR; Ponceau J; Ponceau NR; Ponceau PXM; Ponceau R; Ponceau R (biological stain); Ponceau RG; Ponceau RR; Ponceau RR Type 8019; Ponceau RS; Ponceau Red; Ponceau Red R; Ponceau de xylidine; Ponceau xylidine; Ponceau xylidine (biological stain); Ponceaux 3R; Ponceaux MX; Red 101; Red For Lakes J; Red No. 503; Red R; Scarlet 2R; Scarlet 2RB; Scarlet 2RL; Scarlet 2RL Bluish; Scarlet R; Scarlet R (VAN); Scarlet RRA; Schultz No. 95; Tertracid Ponceau 2R; Tetracid Ponceau 2R; Xylidine Ponceau; Xylidine Ponceau 3RS; Xylidine Red; [ChemIDplus]


Azo Dyes


Dark red solid; [HSDB] Deep red powder; [MSDSonline]


Used as dye for food, drugs, textiles, leather, inks, paper, and wood stains; [HSDB]


In high-dose feeding studies of rats and mice for 15-19 months: increased liver adenomas and carcinomas; [HSDB] May cause irritation; [CAMEO] May cause irritation; Targets the liver; Effects in high-dose animal studies include convulsions; [MSDSonline]


Use in drugs and cosmetics cancelled in the US in 1966; [HSDB]

Adverse Effects

Hepatotoxin, Secondary

IARC Carcinogen

Possible Carcinogen

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information


Chemical Information

Search ChemIDplus

Related Information in HazMap

Industrial Processes with risk of exposure: