2,4-DINITROBENZENESULFONIC ACID
- CAS NO.：89-02-1
- Empirical Formula: C6H4N2O7S
- Molecular Weight: 248.17
- MDL number: MFCD00066017
- EINECS: 201-876-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-07-16 09:55:31
What is 2,4-DINITROBENZENESULFONIC ACID?
Chemical properties
YELLOW TO YELLOW-BROWN CRYSTALLINE POWDER
The Uses of 2,4-DINITROBENZENESULFONIC ACID
Reduction of 2,4-Dinitrobenzenesulfonic Acid gives the colorant intermediate 1,3-diaminobenzene-4-sulfonic acid [88-63-1] as an alternative to the sulfonation of m-phenylenediamine.
Definition
ChEBI: The arenesulfonic acid that is benzenesulfonic acid with two nitro substituents in the 2- and 4-positions.
Production Methods
2,4-Dinitrochlorobenzene is warmed with aqueous sodium sulfite to give an 80 % yield of the sodium salt of 2,4-Dinitrobenzenesulfonic Acid [885-62-1] as yellow needles after salting out. The lower reactivity of 2- and 4- chloronitrobenzene requires much higher temperature for this nucleophilic sulfitation, with too many side reactions to be practicable.
Properties of 2,4-DINITROBENZENESULFONIC ACID
| Melting point: | 95-98 °C(lit.) |
| Density | 1.745 (estimate) |
| refractive index | 1.6430 (estimate) |
| pka | -2.21±0.50(Predicted) |
| form | solid |
| Water Solubility | Soluble in methanol (2.5% w/v), slightly soluble in water. |
| CAS DataBase Reference | 89-02-1(CAS DataBase Reference) |
| EPA Substance Registry System | Benzenesulfonic acid, 2,4-dinitro- (89-02-1) |
Safety information for 2,4-DINITROBENZENESULFONIC ACID
| Signal word | Warning |
| Pictogram(s) |
 Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation H315:Skin corrosion/irritation H318:Serious eye damage/eye 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. 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. P405:Store locked up. |
Computed Descriptors for 2,4-DINITROBENZENESULFONIC ACID
New Products
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