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HomeProduct name list2,4-DINITROBENZENESULFONIC ACID

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: 2023-10-21 09:49:45
2,4-DINITROBENZENESULFONIC ACID Structural

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)
ghs
Corrosion
Corrosives
GHS05
ghs
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

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