China china Factory supply H acid; 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid cas 90-20-0 chemical high quality factory and manufacturers

china Factory supply H acid; 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid cas 90-20-0 chemical high quality

short description:

A chemical substance mainly used to produce more than 90 kinds of acid, direct and reactive dyes, such as acid fuchsin 6B, acid scarlet G, acid black 10B, direct black, reactive brilliant red K-2BP, reactive violet KMY 3R, reactive soluble blue KMY R, etc. These dyes are used for dyeing wool and cotton fabrics. It can also be used in the production of drugs.
It is brownish red in interaction with ferric chloride solution. The acid salt has a bluish red fluorescence, which turns red-purple when alkali is added.H acid products are generally in paste or powder form.

Formula: C10H9NO7S2

Molecular weight: 319.311

Purity: 97% 99%

CAS Number: 90-20-0

Melting point: >300°C(lit.)

Density: 1.88 g/cm3

Product name: 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Apperance: White to grey crystalline powder

EINECS No.:: 201-975-7

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Factory supply H acid; 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid cas 90-20-0 with high quality

1,Quick details for 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Product name	1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
CAS	90-20-0
Other names	1-AMINO-8-NAPHTHOL-3,6-DISULFONIC ACID;4-AMINO-5-HYDROXY-2,7-NAPTHALENEDISULFONIC ACID;4-AMINO-5-HYDROXY-2,7-NAPHTHALENEDISULFONIC ACID;8-AMINO-1-NAPHTHOL-3,6-DISULFONIC ACID;1-Amino-8-naphthol-3,6-disulphonicacid;kyselina8-amino-1-naftol-3,6-disulfonova;kyselinah;4-amino-5-hydroxynaphthalene-2,7-disulphonic acid
Molecular Formula	C10H9NO7S2
Molecular weight	1319.31
Apperance	White to grey crystalline powder
purity	≥99%

2,Useage for 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

Important intermediates of nitrogen dyes

3,storage for 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

In a dry and ventilated warehouse; keep away from sunshine; avoid fire; avoid moisture.

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Appearance: Grey-white powder
Purity(HPLC): 98.5%min.
Content (341 ) : 85% min.
Content (319 ) : 80% min.

Chromotropic acid: 0.5% max.
W acid: 0.15%max.
T acid: 0.25%max.
K acid: 0.05%max.
Total organic insoluble matter: 1.5% max.
Alkali insoluble matter: 0.1% max.
Packing: 25kg /bag

H Acid

1-Amino-8-naphthol-3,6-disulfonic acid

Molecular:C10H9NO7S2

CAS: 90-20-0 EINECS: 201-975-7

Appearance	White crystal powder
Purity	97% 99%
Density	1.88 g/cm3
Melting point	>300°C(lit.)

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Description

The disodium salt and caustic soda concentrated solution of Koch acid (1-naphthylamine-3 mine6 and 8-trisulfonic acid) were heated and melted in a pressure heater at about 180-190 ℃, then the melts were dissolved in water and then acidified and precipitated.Slightly soluble in cold water, soluble in alkaline solutions such as soda ash and caustic soda.

With ferric chloride solution was brown red. The acid salt has a bluish red fluorescence, and becomes reddish purple after adding alkali. H acid products are generally paste or powder.

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Application

H-acid monosodium salt is mainly used to produce acidic, direct and reactive dyes, such as acid magenta 6B, acid red G, acid black 10B, direct black, reactive brilliant red K-2BP, reactive purple K-3R, active soluble blue More than 90 kinds, these dyes are used for dyeing wool and cotton fabrics. Can also be used to produce drugs.