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2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid CAS 6535-70-2

2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid CAS 6535-70-2

Chemical name: 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid

Synonymous names:Sulfo J Acid；SULFO J ACID；6-Amino-1-naphthol-3,5-disulfonic acid

CAS No:6535-70-2

Molecular formula:C10H9NO7S2

Molecular weight:319.31

EINECS No:229-445-0

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Structural formula：

Product Description：

Items	Specifications
Appearance	Gray powder
Assay,%	70 MIN
Boiling point	603.18℃[at 101 325 Pa]
Density	1.880
Vapor pressure	0Pa at 25℃
Acidity coefficient (pKa)	-0.42±0.40(Predicted)

Properties and Usage:

2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid is an organic compound with important application value, which is widely used in the synthesis of dyes and pigments. As a naphthalenesulfonic acid derivative, its molecular structure contains amino, hydroxyl and sulfonic acid groups. Especially as a dye intermediate, it is widely used.

Application areas:

1. Dye synthesis: 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid is a core intermediate for the manufacture of acid dyes and reactive dyes. It forms dyes of various colors through coupling reactions with other compounds during the synthesis process, providing a key color control method for the dye industry.

2. Pigment manufacturing: The compound has excellent chemical stability and color performance, especially in pigment formulations that require high durability and stability, 2-amino-5-hydroxynaphthalene-1,7-disulfonic acid is an indispensable raw material.

Storage conditions: Seal and store in a dry, cool and ventilated place, shielded from light.

Packing: This product is packed in 25kg 50kg 100kg 200kg Bags, and it can also be customized according to customers' requirements