1,4-PHENYLENEDIAMINE-2,5-DISULFONIC ACID
- CAS NO.：7139-89-1
- Empirical Formula: C6H8N2O6S2
- Molecular Weight: 268.27
- MDL number: MFCD00272406
- EINECS: 230-439-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-07-16 09:55:30
What is 1,4-PHENYLENEDIAMINE-2,5-DISULFONIC ACID?
Production Methods
1,4-phenylenediamine-2.5-disulfonic is obtained from p-phenylenediamine and 25% oleum at 140 ℃ or by heating p-phenylenediamine sulfate and 98% sodium hydrogen sulfate in a mixture of 1,2,4-trichlorobenzene and 1-chloronaphthalene to the boiling point of the solvent mixture (215 ℃), removing the solid roduct, dissolving it in water, neutralizing it with sodium hydroxide solution to pH 7.5 – 8, and clarifying the solution with kieselguhr. The product contains 5% of monosulfonic acid, but only a small amount of the isomeric 2,6-disulfonic acid; yield 90%
Properties of 1,4-PHENYLENEDIAMINE-2,5-DISULFONIC ACID
| Density | 1.922±0.06 g/cm3(Predicted) |
| pka | -1.91±0.50(Predicted) |
| EPA Substance Registry System | 1,4-Benzenedisulfonic acid, 2,5-diamino- (7139-89-1) |
Safety information for 1,4-PHENYLENEDIAMINE-2,5-DISULFONIC ACID
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for 1,4-PHENYLENEDIAMINE-2,5-DISULFONIC ACID
1,4-PHENYLENEDIAMINE-2,5-DISULFONIC ACID manufacturer
BTC pharm India
4Y
Phone:+91-8790379245
Whatsapp: +91- 6361382515
product: 7139-89-1 2,5-Diaminobenzene-1,4-disulfonic acid. 98+
Lion Color
Gujarat
Phone:91-7878052742
Whatsapp: 91-7878052742
product: 1,4-Phenylenediamine 2,5-disulfonic acid
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