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Basic information
CAS
98-37-3
EINECS
202-662-8
Molecular Formula
C6H7NO4S
Molecular Weight
189.1891
English Name
3-Amino-4-hydroxybenzenesulfonic acid
Synonyms
2-aminophenol 4-sulfonic acid, 2-Aminophenol-4-Sulfonic Acid, APS,

Physical and Chemical Properties
Density
1.675g/cm3
Refractive index
1.671
Melting point
>300℃ (dec.)
Water Solubility
<0.1 g/100 mL at 21.5℃

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