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HomeProduct name list4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid

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

  • CAS NO.:22346-43-6
  • Empirical Formula: C11H11NO4S
  • Molecular Weight: 253.27
  • MDL number: MFCD00128846
  • EINECS: 244-924-4
  • Update Date: 2023-11-06 15:27:19
4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid Structural

What is 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid?

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.

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

Density  1.542
refractive index  1.4790 (estimate)
storage temp.  2-8°C
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)

Safety information for 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
Precautionary Statement Codes P280:Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid

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