3-Hydroxy-2-naphthoic acid
CAS 92-70-6
EC 202-180-8
Formula C11H8O3
MW 188.18 g/mol
Organic Acids Personal Care & CosmeticsTextile, Leather & PaperFood & NutritionPrinting & Packaging UV Protection & StabilizationAntioxidant & StabilizerPreservation & BiocideSurface Modification & Wetting
Description
3-Hydroxy-2-naphthoic acid (CAS 92-70-6) is an aromatic hydroxy acid commercially known as BON Acid, Naphthol B.O.N., and Developer BON. It carries no assigned E-code and is classified under EC 202-180-8. The compound belongs to the organic acids category and is handled under HS code 29182910.
In textile and leather processing, BON Acid acts as a coupling component in azo dye synthesis, reacting with diazonium salts to produce stable, lightfast colorants directly on fibre. In personal care formulations, it functions as an antioxidant and UV stabiliser, interrupting oxidative chain reactions and absorbing UV radiation to protect both the product matrix and skin.
The material is supplied as a fine crystalline powder and is subject to REACH registration requirements for EU market entry. Procurement teams should confirm supplier documentation including Safety Data Sheets and certificates of analysis. Packaging formats typically range from 25 kg bags to bulk quantities depending on grade specification.
In textile and leather processing, BON Acid acts as a coupling component in azo dye synthesis, reacting with diazonium salts to produce stable, lightfast colorants directly on fibre. In personal care formulations, it functions as an antioxidant and UV stabiliser, interrupting oxidative chain reactions and absorbing UV radiation to protect both the product matrix and skin.
The material is supplied as a fine crystalline powder and is subject to REACH registration requirements for EU market entry. Procurement teams should confirm supplier documentation including Safety Data Sheets and certificates of analysis. Packaging formats typically range from 25 kg bags to bulk quantities depending on grade specification.
Physical Properties
| Melting Point | 222-223 °C |
| Boiling Point | 283.17°C (rough estimate) |
| Density | 1.43 g/cm3 (23℃) |
| Flash Point | >150°C |
| Appearance | yellow to beige-brown fine crystalline powder |
| Color | Yellow to beige-brown |
| Form | Fine Crystalline Powder |
| Water Solubility | PRACTICALLY INSOLUBLE |
| Refractive Index | 1.7160 (estimate) |
Safety & Handling (Learn More)
Warning GHS05 GHS07 GHS08
H
H302H312H315H317H318H319H335H361H371H373H402H412
P
P203P260P261P264P270P271P272P273P280P317P318P319P321P330P405P501P264+P265P301+P317P302+P352P304+P340P308+P316P332+P317P333+P317P337+P317P362+P364P403+P233P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 29182910 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 1 |
Other Names
3-hydroxynaphthalene-2-carboxylic acidBon Acidhydroxynaphthoic acid2-hydroxy-3-naphthoic acidBONBONADeveloper BONNaphthol B.O.N.
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Raw Materials
Derivatives
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