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CAS 3761-53-3

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Xylidine Ponceau 2R

Description:
Xylidine Ponceau 2R, with the CAS number 3761-53-3, is a synthetic azo dye primarily used in the textile and food industries for its vibrant red coloration. It is characterized by its solubility in water and its ability to form stable solutions, which makes it suitable for various applications, including as a colorant in food products and cosmetics. The dye is known for its excellent lightfastness and resistance to fading, which are important properties for maintaining color integrity in finished products. However, like many azo dyes, Xylidine Ponceau 2R may raise health and environmental concerns due to potential toxicity and allergenic properties. Regulatory agencies often monitor its use, and it may be subject to restrictions in certain applications. Safety data sheets typically recommend handling it with care, using appropriate personal protective equipment to minimize exposure. Overall, while Xylidine Ponceau 2R is valued for its coloring properties, awareness of its safety profile is essential for users in various industries.
Formula:C18H14N2Na2O7S2
InChI:InChI=1/C18H16N2O7S2.2Na/c1-10-3-6-15(11(2)7-10)19-20-17-14-5-4-13(28(22,23)24)8-12(14)9-16(18(17)21)29(25,26)27;;/h3-9,21H,1-2H3,(H,22,23,24)(H,25,26,27);;/q;2*+1/p-2/b20-19+;;
InChI key:InChIKey=KMRUYBMTSNUWNR-UHFFFAOYSA-N
SMILES:N(=NC1=C(C)C=C(C)C=C1)C=2C3=C(C=C(S(=O)(=O)O)C2O)C=C(S(=O)(=O)O)C=C3.[Na]
Synonyms:
  • 1-(2,4-Xylylazo)-2-naphthol-3,6-disulfonic acid disodium salt
  • 1695 Red
  • 2,7-Naphthalenedisulfonic acid, 4-[(2,4-dimethylphenyl)azo]-3-hydroxy-, disodium salt
  • 2,7-Naphthalenedisulfonic acid, 4-[2-(2,4-dimethylphenyl)diazenyl]-3-hydroxy-, sodium salt (1:2)
  • 4-(2,4-Dimethylphenylazo)-3-hydroxy-2,7-naphthalenedisulfonic acid, disodium salt
  • Acid Leather Red KPR
  • Acid Leather Red P 2R
  • Acid Leather Scarlet IRW
  • Acid Ponceau 2RL
  • Acid Ponceau R
  • See more synonyms
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