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Name：2, 3-acid (2-hydroxy-3-naphthoic acid)

Molecular formula：C₁₁H₈O₃

Molecular weight：188.179

Structural formula：

CAS NO. ：92-70-6

Content：≥98%

Dry initial melting point：≥217℃

Insoluble content of sodium carbonate solution：≤0.5%

Appearance：Light yellow powder.

Purpose：Dye intermediate. It is used to synthesize chromophenol AS and other kinds of chromophenol, such AS chromophenol AS-bo, AS-RL, AS-E, AS-D, AS-VL, AS-BS, AS-OL, etc. It can also be used in the production of fast bright red BBC, fast bright red BBN, rubber red LG, pigment bright red 6B, Risolbao red BK. It is also used as an intermediate in medicine. Mainly used in the manufacture of chromic phenol AS and other kinds of chromic phenol intermediates, but also the manufacture of medicine and organic pigments intermediate.

Storage：Store in a cool, ventilated compartment. Keep away from fire and heat. Keep out of direct sunlight. Keep the container sealed. Should be stored separately from oxidant and alkali. When handling, light loading and unloading should be done to prevent damage to packaging and containers.