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HomeProduct name listPHENOLDISULFONIC ACID

PHENOLDISULFONIC ACID

  • CAS NO.:96-77-5
  • Empirical Formula: C6H6O7S2
  • Molecular Weight: 254.24
  • MDL number: MFCD00152742
  • EINECS: 202-533-6
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-10-29 16:53:45
PHENOLDISULFONIC ACID Structural

What is PHENOLDISULFONIC ACID?

The Uses of PHENOLDISULFONIC ACID

In the manufacture of aminophenoldisulfonic acids which are intermediates in the dye industry.

Production Methods

Phenoldisulfonic acid is obtained by hydrolysis of the dichloride with ethyl alcohol and/or water. Nitration and reduction of this acid gives 5- amino-4-hydroxy-1,3-benzenedisulfonic acid. 4-Hydroxy-1,3-benzenedisulfonic acid accelerates the rearrangement of cumene hydroperoxide in the Hock – Lang phenol process.

Purification Methods

Crystallise the acid from EtOH/diethyl ether. [Beilstein 11 H 250, 11 I 58, 11 II 139, 6 III 522.]

Properties of PHENOLDISULFONIC ACID

Melting point: >99.85°C
Boiling point: 367.45°C (rough estimate)
Density  1.606 (estimate)
refractive index  1.6550 (estimate)
pka -1.13±0.45(Predicted)
form  liquid
color  Yellow to brown
Water Solubility  Reacts with water
EPA Substance Registry System 1,3-Benzenedisulfonic acid, 4-hydroxy- (96-77-5)

Safety information for PHENOLDISULFONIC 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.
P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
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 PHENOLDISULFONIC ACID

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