Basic information Safety Supplier Related

4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid

Basic information Safety Supplier Related

4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid Basic information

Product Name:
4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid
Synonyms:
  • 4-HYDROXY-7-METHYLAMINO-2-NAPHTHALENESULFONIC ACID
  • 4 HYDROXY 7 METHYL AMINO NAPHTHALENE 2 SULFONIC ACID
  • 6-[N-METHYLAMINO]-1-NAPHTHOL-3-SULFONIC ACID
  • N-METHYL J ACID
  • 4-hydroxy-7-(methylamino)naphthalene-2-sulphonic acid
  • 7-Amino-4-hydroxy-N-methyl-2-naphthalenesulfonic acid
  • 2-(N-Methylamino)-5-naphthol-7-sulfonic acid
  • 5-Hydroxy-2-methylamino-7-naphthalenesulfonic acid
CAS:
22346-43-6
MF:
C11H11NO4S
MW:
253.27
EINECS:
244-924-4
Mol File:
22346-43-6.mol
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4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid Chemical Properties

Density 
1.542
refractive index 
1.4790 (estimate)
storage temp. 
2-8°C
form 
crystalline powder
pka
-0.14±0.40(Predicted)
color 
Very dark brown
CAS DataBase Reference
22346-43-6(CAS DataBase Reference)
EPA Substance Registry System
2-Naphthalenesulfonic acid, 4-hydroxy-7-(methylamino)- (22346-43-6)
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Safety Information

HS Code 
2930909899
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4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid Usage And Synthesis

Chemical Properties

4-Hydroxy-7-methylaminonaphthalene-2- sulfonic acid [22346-43-6], N-methyl J acid, is produced by reaction of 2,5-dihydroxynaphthalene-7-sulfonic acid with methylamine and aqueous sodium bisulfite at 96 C for 36 h (yield 83 %). It is used to produce C.I. Reactive Orange 4, C.I. Reactive Orange 13, and C.I. Reactive Red 33.

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