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4-Amino-3-Hydroxynaphthalene-1-Sulfonic Acid

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4-Amino-3-Hydroxynaphthalene-1-Sulfonic Acid / CAS : 116-63-2

Appearance White or gray needle shaped crystals, usually containing semi molecular crystalline water, turn rose red in the air, especially in humid conditions. Insoluble in cold water, ethanol, ether, benzene, soluble in hot water, hot sodium bisulfite, and alkaline solutions. UN 2585
HS 29222990 DG Class 0
Synonyms 1-Amino-2-Naphthol-4-Sulfonic Acid; 1-Amino-2-Naphtol-4-Sulfamic acid; 1-Naphthalenesulfonic Acid, 4-Amino-3-Hydroxy-; 4-Amino-3-Hydroxy-1-Naphthalenesulfonic Acid; 4-Amino-3-Hydroxy-1-Naphthalenesulfonic Acid, Acs, 98+%; 1-Amino-2-Naphth-4-Sulfonic Ac; 1-Amino-2-Naphthol-4-Sulfonic Acid Test Solution(Chp); 1-Amino-2-Naphthol-4-Sulphonic Acid Extrapure Ar; 3-Hydroxynaphthionic Acid; 4-Amino-3-Hydroxy-1-Naphthalenesulfonic Acid,95%; 4-Amino-3-Hydroxy-1-Naphthalenesulfonic Acid 1-Amino-2-Naphthol-4-Sulfonic Acid 4-Amino-3-Hydroxynaphthalene-1-Sulfonic Acid; 4-Amino-3-Hydroxy-1-Naphthalenesulfonic Acid,1-Amino-2-Naphthol-4-Sulfonic Acid
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Properties

Summary

Formula
C10H9NO4S
Molecular Mass
239.24800
Exact Mass
239.02500
PSA
109.00000
Logp
3.03630
IUPAC
4-amino-3-hydroxynaphthalene-1-sulfonic acid
SMILES
C1=CC=C2C(=C1)C(=CC(=C2N)O)S(=O)(=O)O

Attribute classification

Matter Classification
organic
Category
Agrochemicals > Pesticide Intermediates
Dyestuffs and Pigments > Intermediates

Chemical and Physical Properties

Melting Point
295ºC
Density
1.627 g/cm3
Boiling Point
466ºC
Appearance
White or gray needle shaped crystals, usually containing semi molecular crystalline water, turn rose red in the air, especially in humid conditions. Insoluble in cold water, ethanol, ether, benzene, soluble in hot water, hot sodium bisulfite, and alkaline solutions.

Export information

HS Code
29222990
Export Rebate
13%
UN No.
2585
DG-Class
0
Risk Code
R36/37/38
Safety Label
Xi

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