2-Naphthol
CAS 135-19-3
EC 205-182-7
Formula C10H8O
MW 144.17 g/mol
Pigments & Colorants Personal Care & CosmeticsTextile, Leather & PaperPrinting & Packaging Antioxidant & StabilizerPreservation & Biocide
Description
2-Naphthol (CAS 135-19-3) is an aromatic alcohol derived from naphthalene, commercially known under the names Beta-Naphthol, Developer A, and C.I. 37500. It carries no assigned E-code and is registered under EC number 205-182-7. The molecular formula is C10H8O.
In textile and leather dyeing, 2-Naphthol acts as an azo coupling component, reacting with diazonium salts directly on fiber to develop insoluble azo pigments with strong wash fastness. In personal care formulations, it functions as an antimicrobial and antioxidant active, inhibiting oxidative degradation and microbial growth at low concentrations.
2-Naphthol is supplied as powder, crystals, or granules in technical and high-purity grades, with availability subject to REACH registration requirements for EU importers and downstream users. Standard packaging includes 25 kg bags or fiber drums. Buyers should verify current SDS documentation and substance restrictions under REACH Annex XVII before procurement.
In textile and leather dyeing, 2-Naphthol acts as an azo coupling component, reacting with diazonium salts directly on fiber to develop insoluble azo pigments with strong wash fastness. In personal care formulations, it functions as an antimicrobial and antioxidant active, inhibiting oxidative degradation and microbial growth at low concentrations.
2-Naphthol is supplied as powder, crystals, or granules in technical and high-purity grades, with availability subject to REACH registration requirements for EU importers and downstream users. Standard packaging includes 25 kg bags or fiber drums. Buyers should verify current SDS documentation and substance restrictions under REACH Annex XVII before procurement.
Physical Properties
| Melting Point | 121.6 °C |
| Boiling Point | 285 °C |
| Density | 1.28 g/cm³ @ Temp: 20 °C |
| Flash Point | 153 °C |
| Appearance | 2-Naphthol is a white, crystalline solid. Slight phenolic odor. Darkens in air and on exposure to light. |
| Color | White |
| Odor | faint phenol-like odor |
| Form | Powder, Crystals or Granules |
| Water Solubility | 1 g/L (20 ºC) |
| Vapor Pressure | 10 mm Hg ( 145.5 °C) |
| Refractive Index | 1.5762 (estimate) |
| Log P | 1.89 at 20℃ |
Safety & Handling (Learn More)
Warning GHS07 GHS09 GHS05 GHS08
H
H302H317H318H319H332H335H370H371H372H373H400H401H410H412H302+H332
P
P260P261P264P270P271P272P273P280P317P319P321P330P391P405P501P264+P265P301+P317P302+P352P304+P340P308+P316P333+P317P337+P317P362+P364P403+P233P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 29071590 |
| UN Number | 3077 |
| ADR Class | 9 |
| Packing Group | III |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 2 |
Other Names
Naphthalen-2-Ol2-NaftolTrimetin2-NaphtolB-NAPHTHOLC.I. 37500Developer A
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Raw Materials
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