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HomeProduct name list4-Amino-1,3-benzenedisulfonic acid

4-Amino-1,3-benzenedisulfonic acid

  • CAS NO.:137-51-9
  • Empirical Formula: C6H7NO6S2
  • Molecular Weight: 253.25
  • MDL number: MFCD00035903
  • EINECS: 205-299-3
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-12-18 14:08:52
4-Amino-1,3-benzenedisulfonic acid Structural

What is 4-Amino-1,3-benzenedisulfonic acid?

The Uses of 4-Amino-1,3-benzenedisulfonic acid

4-Amino-1,3-benzenedisulfonic Acid is used as a reagent in the synthesis of arylazopyridoxal phosphate and phosphonate derivatives as P2 receptor antagonists.

Production Methods

4-Amino-1,3-benzenedisulfonic acid is freely soluble in water and ethyl alcohol. It is prepared by sulfonating 4-aminobenzenesulfonic acid with oleum at 20 ℃ and130 ℃ (4 – 6.5 h), draining the sulfonation mixture into water under pressure, adding lime at 70 – 75 ℃, separating the resulting gypsum, precipitating the calcium ions with soda, removing the calcium carbonate formed, and concentrating the sodium salt solution by evaporation. Yield 90 – 91%

Flammability and Explosibility

Non flammable

Properties of 4-Amino-1,3-benzenedisulfonic acid

Melting point: >259°C (dec.)
Boiling point: 497.45℃[at 101 325 Pa]
Density  1.844±0.06 g/cm3(Predicted)
vapor pressure  0Pa at 25℃
storage temp.  Keep in dark place,Sealed in dry,Room Temperature
solubility  Aqueous Acid (Slightly), DMSO (Slightly), Methanol (Slightly), Water (Slightly)
form  Solid
pka -0.93±0.48(Predicted)
color  White to Grey
Water Solubility  4.3g/L at 21℃
Stability: Hygroscopic
CAS DataBase Reference 137-51-9(CAS DataBase Reference)
EPA Substance Registry System 1,3-Benzenedisulfonic acid, 4-amino- (137-51-9)

Safety information for 4-Amino-1,3-benzenedisulfonic acid

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H314:Skin corrosion/irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
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.

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