CAS 2766-77-0: C.I. Acid Red 44

Description: C.I. Acid Red 44, also known by its CAS number 2766-77-0, is a synthetic azo dye primarily used in the textile and food industries for coloring purposes. It exhibits a vibrant red hue and is soluble in water, making it suitable for various applications, including dyeing and printing fabrics, as well as in food and cosmetic products. The dye is characterized by its stability under acidic conditions, though it may be less stable in alkaline environments. Acid Red 44 is known for its good lightfastness and washfastness properties, which contribute to its effectiveness in maintaining color intensity during use. However, like many azo dyes, it has raised environmental and health concerns due to potential toxicity and the ability to release aromatic amines upon degradation. Regulatory agencies often monitor its use, and it is essential to adhere to safety guidelines when handling this substance. Overall, C.I. Acid Red 44 is a widely utilized dye with specific characteristics that make it valuable in various industrial applications.

Formula: C₂₀H₁₄N₂O₇S₂·2Na

InChI: InChI=1S/C20H14N2O7S2.2Na/c23-17-9-8-13-10-14(30(24,25)26)11-18(31(27,28)29)19(13)20(17)22-21-16-7-3-5-12-4-1-2-6-15(12)16;;/h1-11,23H,(H,24,25,26)(H,27,28,29);;

InChI key: InChIKey=ZINIVYNUMFTCAZ-UHFFFAOYSA-N

SMILES: [Na].O=S(=O)(O)C1=CC2=CC=C(O)C(N=NC3=CC=CC=4C=CC=CC34)=C2C(=C1)S(=O)(=O)O

Synonyms:

• 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(1-naphthalenylazo)-, disodium salt
• 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-[2-(1-naphthalenyl)diazenyl]-, sodium salt (1:2)
• 2-Naphthol-6,8-disulfonic acid, 1-(1-naphthylazo)-, disodium salt
• Acid Leather Ponceau 6R
• Acid Ponceau 6R
• Acid Red 6A
• Acidal Crystals Ponceau
• Brillant Crystal Scarlett
• Brilliant Crystal Scarlet
• Colacid Red 6A
• Crystal Ponceau
• Crystal Ponceau M 6R
• Crystal Ponceau?R
• Crystal Scarlet
• Crystal Scarlet 6R
• Crystal Tertracid Ponceau 6R
• Kemacid Leather Ponceau 6R
• Ponceau 6R
• Ponceau 6R Crystals
• Ponceau Cristallise Extra A Export
• Ponceau Crystals 6R
• Romexal Red 6A
• Sodium 6-Hydroxy-5-(1-Naphthylazo)Naphthalene-2,4-Disulphonate
• Triacid Ponceau 6R
• crystal ponceau 6R
• disodium (8Z)-8-[2-(naphthalen-1-yl)hydrazinylidene]-7-oxo-7,8-dihydronaphthalene-1,3-disulfonate
• C.I. Acid Red 44
• C.I. Acid Red 44, disodium salt

Crystal Ponceau 6R (C.I. 16250)

CAS: 2766-77-0

• Formula: C₂₀H₁₂N₂Na₂O₇S₂
• Purity: ≥ 75%
• Color and Shape: Dark red to dark brown powder
• Molecular weight: 502.43

Acid Red 44

CAS: 2766-77-0

• Formula: C₂₀H₁₂N₂O₇S₂Na
• Color and Shape: Neat
• Molecular weight: 502.43

Crystal Ponceau 6R (Technical Grade)

CAS: 2766-77-0

• Formula: C₂₀H₁₂N₂O₇S₂Na
• Color and Shape: Red
• Molecular weight: 502.43

Crystal Scarlet

CAS: 2766-77-0

Crystal Scarlet is a synthetic quinoline derivative used in water treatment processes. It is used …

• Formula: C₂₀H₁₂N₂O₇S₂·2Na
• Purity: Min. 90%
• Color and Shape: Powder
• Molecular weight: 502.43 g/mol