8-Anilinonaphthalene-1-sulfonic acid
CAS 82-76-8
EC 201-438-7
Formula C16H13NO3S
MW 299.34 g/mol
Pigments & Colorants Textile, Leather & PaperPlastics & PolymersPrinting & PackagingCoatings, Adhesives, Sealants & Elastomers UV Protection & StabilizationAntioxidant & Stabilizer
Description
8-Anilinonaphthalene-1-sulfonic Acid (CAS 82-76-8) is an organic sulfonic acid compound commercially known as ANS or ANSA, and referenced in trade literature as phenyl peri acid or phenyl acid. It carries no assigned E-code. It belongs to the naphthalene sulfonate chemical family and is classified under HS code 29214980.
In textile and leather processing, ANS functions as a colorant by forming stable complexes with fiber substrates, contributing to consistent dye uptake. In polymer and coating formulations, it acts as an antioxidant and UV absorber by intercepting free radicals and dissipating UV energy before chain degradation occurs, extending material service life.
ANS is supplied as a technical-grade powder and is subject to REACH registration requirements for EU market use. Procurement quantities are typically available in drum or bag formats. Buyers should request a full SDS and confirm supplier REACH compliance documentation prior to sourcing.
In textile and leather processing, ANS functions as a colorant by forming stable complexes with fiber substrates, contributing to consistent dye uptake. In polymer and coating formulations, it acts as an antioxidant and UV absorber by intercepting free radicals and dissipating UV energy before chain degradation occurs, extending material service life.
ANS is supplied as a technical-grade powder and is subject to REACH registration requirements for EU market use. Procurement quantities are typically available in drum or bag formats. Buyers should request a full SDS and confirm supplier REACH compliance documentation prior to sourcing.
Physical Properties
| Melting Point | 215-217 °C (dec.)(lit.) |
| Density | 1.409±0.06 g/cm3(Predicted) |
| Appearance | Dark Grey to Black Solid |
| Color | Dark green to brown to black |
| Form | Powder |
Safety & Handling (Learn More)
Warning GHS07
H
H302H315H319H335
P
P261P264P270P271P280P319P321P330P405P501P264+P265P301+P317P302+P352P304+P340P332+P317P337+P317P362+P364P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 29214980 |
| Storage Class | 11 - Combustible Solids |
Other Names
phenylperi acid8-Anilinonaphthalene-1-sulfonate1-Anilino-8-Naphthalene Sulfonate1-anilino-8-naphthalenesulfonic acidANSANSA1,8-ANSPHENYL ACID
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