What is BON Acid and which isomer is supplied?

BON Acid is 3-hydroxy-2-naphthoic acid, CAS 92-70-6, with molecular formula C₁₁H₈O₃ and molecular weight 188.18. The supplied material is the 3-hydroxy/2-carboxy isomer, not 1-hydroxy-2-naphthoic acid, and is suitable for naphthol-type coupling chemistry.

What are the main applications of 3-Hydroxy-2-Naphthoic Acid?

It is primarily used as an intermediate for pigments and dyes, especially for producing naphthol AS-type arylides and azo coupling components. It is also used in specialty organic synthesis for pharmaceuticals, agrochemicals and functional colorants.

What specifications should be checked before ordering?

Confirm assay, appearance, melting point, moisture, insoluble matter and the isomeric profile. The standard industrial specification shown is 99% minimum; request the batch analysis for the exact method and confirm the batch is the 3-hydroxy-2-isomer under CAS 92-70-6.

How should BON Acid be stored and handled?

Store in a cool, dry, ventilated area and keep the container tightly closed. Avoid dust generation and inhalation, use suitable PPE when handling powder, and refer to the safety information for spill, disposal and first-aid procedures.

Why is BON Acid important for Naphthol AS pigment intermediates?

BON Acid provides the 2-carboxy and 3-hydroxy substitution pattern used to form naphthol AS-type arylide coupling components. These arylides control azo coupling position, hue and fastness in the resulting pigments and dyes.

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

3-Hydroxy-2-Naphthoic Acid (BON Acid), CAS 92-70-6, is an aromatic intermediate used mainly for azo pigments, dyes and naphthol AS-type arylide coupling components. Confirm the required assay, melting point and isomeric profile for the intended synthesis.

CAS: 92-70-6
Synonyms: BON Acid, Beta-Oxynaphthoic Acid, 3-Hydroxynaphthalene-2-carboxylic acid, 2-Hydroxy-3-naphthoic acid, BONA
Einecs: 202-180-8
Molecular Formula: C₁₁H₈O₃
Grade: Industrial grade 99%
Package: 25kg/bag

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Product Description

3-Hydroxy-2-Naphthoic Acid (BON Acid), CAS 92-70-6, is an aromatic hydroxycarboxylic acid also named 2-hydroxy-3-naphthoic acid or beta-oxynaphthoic acid; the EC/EINECS number is 202-180-8.

Synonyms: BON Acid; Beta-Oxynaphthoic Acid; 3-Hydroxynaphthalene-2-carboxylic acid; 2-Hydroxy-3-naphthoic acid; BONA.

CAS: 92-70-6.

Molecular formula: C₁₁H₈O₃.

Molecular weight: 188.18.

EC number: 202-180-8.

It is normally supplied as a light yellow powder with an assay of about 99%.

Typical properties include density of about 1.399 g/cm³, melting point of about 218-221 °C, flash point above 150 °C and decomposition above about 400 °C; it is practically insoluble in water.

It is mainly used as an intermediate for pigments and dyes, especially for producing naphthol AS-type arylides and azo coupling components.

The 2-carboxy and 3-hydroxy substitution pattern forms the naphthol AS-type coupling structure that controls azo coupling position, hue and fastness.

It is also used in specialty organic synthesis for pharmaceuticals, agrochemicals and functional colorants.

Confirm assay, appearance, melting point, moisture, insoluble matter and the isomeric profile, and confirm the batch is the 3-hydroxy-2-isomer under CAS 92-70-6.

Store in a cool, dry, ventilated area in tightly closed containers, avoid dust generation and inhalation, and use suitable PPE when handling the powder.

Confirm the current product-specific specification.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA, or other product-specific files.

Regulated-use suitability must be confirmed separately with current product-specific documentation.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended use, required specification, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is BON Acid and which isomer is supplied?

A: BON Acid is 3-hydroxy-2-naphthoic acid, CAS 92-70-6, with molecular formula C₁₁H₈O₃ and molecular weight 188.18. The supplied material is the 3-hydroxy/2-carboxy isomer, not 1-hydroxy-2-naphthoic acid, and is suitable for naphthol-type coupling chemistry.
Q:
What are the main applications of 3-Hydroxy-2-Naphthoic Acid?

A: It is primarily used as an intermediate for pigments and dyes, especially for producing naphthol AS-type arylides and azo coupling components. It is also used in specialty organic synthesis for pharmaceuticals, agrochemicals and functional colorants.
Q:
What specifications should be checked before ordering?

A: Confirm assay, appearance, melting point, moisture, insoluble matter and the isomeric profile. The standard industrial specification shown is 99% minimum; request the batch analysis for the exact method and confirm the batch is the 3-hydroxy-2-isomer under CAS 92-70-6.
Q:
How should BON Acid be stored and handled?

A: Store in a cool, dry, ventilated area and keep the container tightly closed. Avoid dust generation and inhalation, use suitable PPE when handling powder, and refer to the safety information for spill, disposal and first-aid procedures.
Q:
Why is BON Acid important for Naphthol AS pigment intermediates?

A: BON Acid provides the 2-carboxy and 3-hydroxy substitution pattern used to form naphthol AS-type arylide coupling components. These arylides control azo coupling position, hue and fastness in the resulting pigments and dyes.

Ordering & Documentation

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