2,5-Diaminobenzenesulfonic acid
- CAS NO.：88-45-9
- Empirical Formula: C6H8N2O3S
- Molecular Weight: 188.2
- MDL number: MFCD00007904
- EINECS: 201-832-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-07-14 15:28:00
What is 2,5-Diaminobenzenesulfonic acid?
Chemical properties
violet powder
The Uses of 2,5-Diaminobenzenesulfonic acid
2,5-Diaminobenzenesulfonic acid was used in preparation of a polymeric dye, required for laccase-mediated dyeing of cotton.
General Description
2,5-Diaminobenzenesulfonic acid is a dye precursor. Electrochemical copolymerization of 2,5-diaminobenzensulfonic acid and aniline by cyclic voltammetry on IrO2 coated titanium electrodes was reported.
Flammability and Explosibility
Non flammable
Properties of 2,5-Diaminobenzenesulfonic acid
| Melting point: | 298-300 °C (dec.) (lit.) |
| Boiling point: | 500°C |
| Density | 1.366 (estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.6490 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | 2.308g/L in organic solvents at 20 ℃ |
| form | solid |
| pka | 5.17±0.10(Predicted) |
| color | White to Light gray to Light orange |
| Water Solubility | 4g/L at 26℃ |
| BRN | 2970398 |
| CAS DataBase Reference | 88-45-9(CAS DataBase Reference) |
| EPA Substance Registry System | Benzenesulfonic acid, 2,5-diamino- (88-45-9) |
Safety information for 2,5-Diaminobenzenesulfonic acid
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation |
| Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P363:Wash contaminated clothing before reuse. 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 2,5-Diaminobenzenesulfonic acid
2,5-Diaminobenzenesulfonic acid manufacturer
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