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HomeProduct name list7-Anilino-4-hydroxy-2-naphthalenesulfonic acid

7-Anilino-4-hydroxy-2-naphthalenesulfonic acid

  • CAS NO.:119-40-4
  • Empirical Formula: C16H13NO4S
  • Molecular Weight: 315.34
  • MDL number: MFCD00035714
  • EINECS: 204-320-3
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-05-31 17:33:32
7-Anilino-4-hydroxy-2-naphthalenesulfonic acid Structural

What is 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid?

Chemical properties

Blue-gray crystals. Soluble in alkali, insoluble in organic solvent. 4-Hydroxy-7-phenylaminonaphthalene-2- sulfonic acid [119-40-4] N-phenyl J acid, is produced by reaction of J acid with aniline in aqueous sodium bisulfite at reflux for 40 h (yield 85 %). It is used to produce C.I. Direct Violet 7, C.I. Direct Violet 9, C.I. Direct Violet 51, C.I. Direct Blue 78, and C.I. Direct Blue 168.

The Uses of 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid

7-Anilino-4-hydroxy-2-naphthalenesulfonic acid is a dye intermediate, which is used to synthesize azo dyes such as direct copper salt green BTL, copper salt blue FBGL and copper salt purple BBL.

Flammability and Explosibility

Non flammable

Synthesis

7-Anilino-4-hydroxy-2-naphthalenesulfonic acid was synthesized from the condensation of J acid and aniline in the medium of sodium bisulfite.

Properties of 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid

Density  1.495±0.06 g/cm3(Predicted)
form  powder to crystal
pka -0.18±0.40(Predicted)
color  White to Gray to Brown
Water Solubility  587.97mg/L at 25℃
CAS DataBase Reference 119-40-4(CAS DataBase Reference)
EPA Substance Registry System 4-Hydroxy-7-(phenylamino)-2-naphthalenesulfonic acid (119-40-4)

Safety information for 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
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 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid

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