3-Hydroxy-2-Naphthoic Acid (BON Acid) CAS 92-70-6

2-Hydroxy-3-naphthalene acid (2,3-acid) is a chemical substance, Chinese aliases include 3-hydroxy-2-naphthalene carboxylic acid, 2-naphthalene-3-formic acid, etc., molecular formula C11H8O3, CAS No. 92-70-6. The substance is in the form of light yellow uniform powder, slightly soluble in hot water, soluble in organic solvents such as ethanol and ether and alkaline solutions, reacts with soda ash to form monosodium salt and disodium salt, the melting point is 218-221°C, storage needs to be placed in a cool and dry place and the container should be kept tight。

3-Hydroxy-2-naphthoic acid

Synonyms: 3-Hydroxy-2-naphthalene Carboxylic Acid; 3-Hydroxy-2-naphthalene Acid;

CAS No.: 92-70-6

Molecular Formula: C11H8O3

Molecular Weight: 188.18

EINECS No.: 202-180-8

Application: Raw Material Intermediate

Content: 99%

Property: Yellow Powder

Packaging: 25kg/bag

Appearance and properties: light yellow powder

Density: 1.399 g/cm3

Melting point: 218-221°C(lit.)

Boiling point: Decomposes (> 400ºC)

Flash point: >150°C

Water solubility: PRACTICALLY INSOLUBLE

Stability: Stable under normal temperatures and pressures.

Storage conditions: Store in a cool, dry place. Keep container closed when not in use.

Production method

After β-naphthol is salted with sodium hydroxide, it is heated and dehydrated, and the anhydrous β-naphthol salt is carboxylated with carbon dioxide to produce disodium 2,3 acids, and then acidated with sulfuric acid to obtain the finished product. 

use

This product is mainly used to make chromophol AS and other chromophol intermediates, and can also be used in medicine and organic pigment intermediates.