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HomeProduct name list7-Amino-1,3-naphthalenedisulfonic acid

7-Amino-1,3-naphthalenedisulfonic acid

  • CAS NO.:86-65-7
  • Empirical Formula: C10H9NO6S2
  • Molecular Weight: 303.31
  • MDL number: MFCD00003991
  • EINECS: 201-689-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-11-06 13:54:44
7-Amino-1,3-naphthalenedisulfonic acid Structural

What is 7-Amino-1,3-naphthalenedisulfonic acid?

Chemical properties

off-white to beige-green to light brown. 2-Aminonaphthalene-6,8-disulfonic acid [86-65-7]. (7-aminonaphthalene-1,3-disulfonic acid), amino G acid, C10H9NO6S2, Mr 303.3, and its bis-alkali-metal salts are very soluble in water, but the acid salts, especially the acid potassium salt, are much less soluble.

The Uses of 7-Amino-1,3-naphthalenedisulfonic acid

7-Amino-1,3-naphthalenedisulfonic Acid is a reagent which may be used in the preparation of pyrimidine derivatives.

The Uses of 7-Amino-1,3-naphthalenedisulfonic acid

Azo dye intermediate.

Production Methods

The disodium or dipotassium salt of 2-hydroxynaphthalene-6,8-disulfonic acid is heated with excess aqueous ammonia and ammonium bisulfite at 185℃ for 18 h. The reaction mixture is basified, heated to remove excess ammonia, neutralized, and evaporated while any residual sulfite is removed. The resulting amino G acid liquor (95 % yield) is used directly for caustic fusion to give g acid, the major outlet.

Safety Profile

Questionable carcinogen with experimental neoplastigenic data. When heated to decomposition it emits toxic fumes of NOx and SOx.

Properties of 7-Amino-1,3-naphthalenedisulfonic acid

Melting point: 300°C
Density  1.6329 (rough estimate)
refractive index  1.7330 (estimate)
pka -0.93±0.40(Predicted)
form  Powder or Needles
color  Off-white to beige-green to light brown
Water Solubility  soluble
CAS DataBase Reference 86-65-7(CAS DataBase Reference)
EPA Substance Registry System 1,3-Naphthalenedisulfonic acid, 7-amino- (86-65-7)

Safety information for 7-Amino-1,3-naphthalenedisulfonic acid

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
GHS Hazard Statements H314:Skin corrosion/irritation
Precautionary Statement Codes P280:Wear protective gloves/protective clothing/eye protection/face protection.
P310:Immediately call a POISON CENTER or doctor/physician.
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-Amino-1,3-naphthalenedisulfonic acid

Abamectin manufacturer

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Matangi Industries LLP

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Chromex

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product: 7-Amino-1,3-naphthalenedisulfonic acid
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