CAS 13390-47-1

Acid Yellow 38

Description:

Acid Yellow 38, with the CAS number 13390-47-1, is a synthetic azo dye primarily used in the textile industry for dyeing and printing fabrics. It is characterized by its bright yellow color and is soluble in water, making it suitable for various applications, including food and cosmetic coloring, although its use in food is subject to regulatory scrutiny in many regions. The dye is known for its good lightfastness and moderate resistance to washing, which makes it a popular choice for applications requiring durability. Acid Yellow 38 is classified as an acid dye, meaning it is typically applied to fibers such as wool, silk, and nylon under acidic conditions. However, like many azo dyes, it may raise environmental and health concerns due to potential degradation products that can be harmful. Therefore, its use is often regulated, and safety data sheets should be consulted to understand handling and exposure risks. Overall, Acid Yellow 38 is valued for its vibrant hue and versatility in various industrial applications.

Formula: C₂₈H₂₆N₄O₈S₃·2Na

InChI: InChI=1S/C28H26N4O8S3.2Na/c1-3-39-23-11-5-19(6-12-23)29-31-21-9-15-25(27(17-21)42(33,34)35)41-26-16-10-22(18-28(26)43(36,37)38)32-30-20-7-13-24(14-8-20)40-4-2;;/h5-18H,3-4H2,1-2H3,(H,33,34,35)(H,36,37,38);;

InChI key: InChIKey=VDLPIVYTQKTNNF-UHFFFAOYSA-N

SMILES: S(C1=C(S(=O)(=O)O)C=C(N=NC2=CC=C(OCC)C=C2)C=C1)C3=C(S(=O)(=O)O)C=C(N=NC4=CC=C(OCC)C=C4)C=C3.[Na]

Synonyms:

• Acid Milling Yellow
• Acid Yellow 38
• Benzenesulfonic acid, 2,2'-thiobis(5-(2-(4-ethoxyphenyl)diazenyl)-, sodium salt (1:2)
• Benzenesulfonic acid, 2,2′-thiobis[5-[(4-ethoxyphenyl)azo]-, disodium salt
• Kayanol Milling Yellow O
• Milling Yellow O
• Sodium 2,2-Thiobis(5-(4-Ethoxyphenylazo)Benzenesulphonate
• Suminol Milling Yellow O
• Suminol Yellow O
• disodium 2,2'-sulfanediylbis{5-[(E)-(4-ethoxyphenyl)diazenyl]benzenesulfonate}
• C.I. Acid Yellow 38, disodium salt

Acid Milling Yellow

Controlled Product

CAS: 13390-47-1

Applications Acid Milling Yellow is an acid dye.
References Smith, Thomas M., et al.: Neurochem. Res., 8, 1177 (1983); Hilado, C. J., et al.: J. Combustion Toxicology., 9, 76 (1982); Little, L. W., et al.: Engineering Extension Series, 145, 524 (1974);

Formula: C₂₈H₂₄N₄Na₂O₈S₃

Color and Shape: Neat

Molecular weight: 686.687

Ref: TR-A795264