2,4-Diaminobenzenesulfonic acid
- CAS NO.：88-63-1
- Empirical Formula: C6H8N2O3S
- Molecular Weight: 188.2
- MDL number: MFCD00035772
- EINECS: 201-846-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:14:13
What is 2,4-Diaminobenzenesulfonic acid?
Chemical properties
brown crystalline powder
The Uses of 2,4-Diaminobenzenesulfonic acid
2,4-Diaminobenzenesulfonic acid was used in preparation of series of sulfonated homo- and random co-polyimides.
Production Methods
2,4-Diaminobenzenesulfonic acid is obtained by sulfonating a solution of m-phenylenediamine in 100% sulfuric acid with oleum at 155 ℃, adding water to the sulfonation mixture, desulfonating the resulting disulfonic acids at 140 ℃, and isolating the free acid at 10 ℃; yield 93%. Another process starts from 1-chloro-2,4-dinitrobenzene, which, as an alcoholic solution, is reacted with sodium sulfite solution to form 2,4-dinitrobenzenesulfonic acid, from which the end product is obtained by reduction with iron according to BE′CHAMP.
General Description
2,4-Diaminobenzenesulfonic acid is an sulfonated aromatic amine and its aerobic biodegradation was reported.
Properties of 2,4-Diaminobenzenesulfonic acid
| Melting point: | 260-266 °C (dec.) |
| Boiling point: | 500°C (estimate) |
| Density | 1.366 (estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.6490 (estimate) |
| storage temp. | -20°C Freezer, Under inert atmosphere |
| solubility | DMSO (Slightly, Heated), Methanol (Slightly) |
| form | Solid |
| pka | 2.99±0.10(Predicted) |
| color | White to Pale Yellow |
| Water Solubility | 1000g/L at 25℃ |
| BRN | 2694057 |
| CAS DataBase Reference | 88-63-1(CAS DataBase Reference) |
| EPA Substance Registry System | Benzenesulfonic acid, 2,4-diamino- (88-63-1) |
Safety information for 2,4-Diaminobenzenesulfonic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for 2,4-Diaminobenzenesulfonic acid
2,4-Diaminobenzenesulfonic acid manufacturer
DL Intrachem
Ahmedabad
Phone:91-9099014678
Whatsapp: 91-9099014678
product: 1,3-Phenylenediamine-4-sulfonic acid
Colour Finders
Gujarat
Phone:91-9327066033
Whatsapp: 91-9327066033
product: 1,3-Phenylenediamine-4-sulfonic acid
Lion Color
Gujarat
Phone:91-7878052742
Whatsapp: 91-7878052742
product: 1,3-Phenylenediamine-4-sulfonic acid
Cns Chemicals
Hyderabad
Phone:91-9381957258
Whatsapp: 91-9381957258
product: 1,3-Phenylenediamine-4-sulfonic acid
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