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Tianjin Yadong Chemical Co.,Ltd.
Tianjin Yadong Chemical Co.,Ltd.
36 YRS
Tianjin, China
Main Products:
2-(4-Aminophenyl)Sulfonylethyl Hydrogen Sulfate / Direct Red F2G / Direct Red 23 / Direct Red 227 / 7-Aminonaphthalene-1,3,6-Trisulfonic Acid / 1-Amino-8-Hydroxynaphthalene-3,6-Disulphonic Acid / 2-Naphthol / Metanilic Acid
Tianjin, China
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H Acid / CAS 90-20-0
OVERVIEW
Uses
Packaging
25 KG/Fibre Drum
Lead Time
14-30 days
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DESCRIPTION
H acid
English Name: H acid
CAS No.: 90-20-0
Molecular formula: C10H9NO7S2
Molecular weight: 319.31
EINECS No.: 201-975-7
Melting point: > 300 ° C (lit.)
Density: 1.6832 (rough estimate)
Application: it is an important intermediate in the manufacture of azo dyes
Typical Properties
Summary
It is an important intermediate in the manufacture of azo dyes.
CAS No.
90-20-0
Formula
C10H9NO7S2
Molecular Mass
319.31100
Exact Mass
318.98200
PSA
171.75000
Logp
3.36380
IUPAC
4-amino-5-hydroxynaphthalene-2,7-disulfonic acid
SMILES
C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)O)N)O)S(=O)(=O)O
Attribute classification
Matter Classification
organic
Category
Dyestuffs and Pigments > Intermediates
Chemical and Physical Properties
Melting Point
>300 °C(lit.)
Density
1.88 g/cm3
Appearance
White to gray yellow powder
Acidity and Basicity
acidness reducibility oxidizability
Export information
HS Code
29222100
Export Rebate
13%
Risk Code
R36/37/38
Safety Label
Xi
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