3-Hydroxy-2-naphthoic acid-Shandong Huashang Chemical Co., Ltd.

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3-Hydroxy-2-naphthoic acid

Brand：HS

Model：25kg/drum

Purity：99%

Cas：92-70-6

Createtime： 2026-04-14
Updatetime： 2026-04-15

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Product Details

useage	Industrial use
deliveryInfo
appearance	powder
Molecular Weight	188.18
aliasen
supplyCapacity	50000MT/Month
harbor	Qingdao,China
minorder	1KG
Appearance	White to pale yellow crystalline powder

Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and sales of fine chemicals. Headquartered in Jinan, Shandong, China, we are committed to delivering high-quality products to our global partners. Currently, over 90% of our products are exported to developed markets, including North America, Europe, Japan, South Korea, and the Middle East.

Basic Information

Product Name: 3-Hydroxy-2-naphthoic acid; Alias: BON acid, β-Hydroxynaphthoic acid, 2-Hydroxy-3-naphthoic acid

CAS Number: 92-70-6 (MDL: MFCD00004103)

Molecular Formula: C??H?O?

Molecular Weight: 188.18 g/mol

Structural Formula: C??H?(OH)(COOH) (naphthalene ring with hydroxyl and carboxyl groups at 3 and 2 positions respectively)

Classification: Organic acid, naphthalene derivative, dye intermediate, pharmaceutical intermediate, chemical raw material

Physical & Chemical Properties

3-Hydroxy-2-naphthoic acid is a white to pale yellow crystalline powder, with slight hygroscopicity. It is slightly soluble in cold water, soluble in hot water, ethanol, ether, benzene, chloroform and alkaline aqueous solutions. It has a melting point of 218-224°C, decomposes when heated to high temperature, emitting acrid smoke and irritating fumes. It is stable under normal temperature and pressure, incompatible with strong oxidants and strong bases. It is a weak acid with a pKa of about 2.8, and its aqueous solution is weakly acidic.

Key physical and chemical parameters are detailed in the specification table below, meeting the requirements of high-purity pharmaceutical grade and industrial grades.

Main Uses

3-Hydroxy-2-naphthoic acid is an important organic intermediate, widely used in dye, pigment, pharmaceutical and chemical industries:

Dye & Pigment Industry: Key intermediate for manufacturing azo dyes and organic pigments, used to synthesize color phenol AS and various color phenol intermediates, improving the color fastness and stability of dyes.
Pharmaceutical Industry: Intermediate for synthesizing anti-diabetic, anti-inflammatory and analgesic drugs, with insulin-sensitizing effects, protecting pancreatic β-cells and enhancing insulin signaling.
Chemical Synthesis: Raw material for organic synthesis, used in the preparation of naphthalene derivatives, coordination polymers and functional materials, promoting the development of fine chemical industry.
Research & Development: Used in biochemical research and material science experiments, as a research reagent for cell protection and signal pathway regulation.

Packaging & Storage

Packaging Method

Lab Grade: 5g, 10g, 25g, 50g sealed glass bottles or aluminum foil bags (filled with desiccant); 100g, 500g, 1kg HDPE plastic bottles with PTFE liners, suitable for laboratory research and small-batch testing.

Industrial Grade: 25kg/bag (inner PE bag with desiccant, outer polypropylene woven bag); 50kg/100kg galvanized iron drum with PTFE liner and sealed; customized packaging available per customer requirements.

Storage Method

Store in a cool, dry, dark, and well-ventilated warehouse at a temperature of 15-25°C (room temperature recommended). Keep containers tightly sealed and protected from light to prevent moisture absorption, oxidation and discoloration. Avoid contact with water, strong oxidants, and strong bases; keep away from fire, heat sources, and direct sunlight. Shelf life is 24 months under standard sealed, dry, and dark storage conditions.

Comprehensive Specification Table

Item	Specification	Unit	Remarks
Product Name	3-Hydroxy-2-naphthoic acid (BON acid)	—	Alias: β-Hydroxynaphthoic acid
CAS Number	92-70-6	—	MDL: MFCD00004103; PubChem: 7104
Molecular Formula	C??H?O?	—	Naphthalene derivative with hydroxyl and carboxyl groups
Molecular Weight	188.18	g/mol	Theoretical calculation value
Appearance	White to pale yellow crystalline powder	—	Slight hygroscopicity; darkens upon prolonged exposure to light
Purity	≥99.0 (Pharmaceutical Grade); ≥98.0 (Industrial Grade)	%	High purity for pharmaceutical and dye intermediate synthesis
Melting Point	218-224	℃	Literature value; decomposes at melting point
Boiling Point	283.17 (rough estimate)	℃	Decomposes before boiling at atmospheric pressure
Solubility	Slightly soluble in cold water; soluble in hot water, ethanol, ether, alkaline solutions	—	Insoluble in cold water; soluble in organic solvents and alkalis
Density	1.43 (23°C)	g/cm3	Measured value at room temperature
Main Impurities	≤0.5 (Pharmaceutical Grade); ≤1.5 (Industrial Grade)	%	Including moisture, 2-naphthol, and other organic impurities
Main Uses	Dye/pigment intermediate, pharmaceutical intermediate, organic synthesis raw material	—
Packaging Method	5g-1kg bottles/bags (desiccant-filled); 25kg-100kg iron drum/woven bag	—	Sealed, moisture-proof, light-proof packaging
	15-25°C, cool, dry, dark, sealed; away from moisture/oxidants	—	Shelf life 24 months under dry and dark conditions; avoid light exposure