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HomeProduct name list4-Chloro-3,5-dinitrobenzoic acid

4-Chloro-3,5-dinitrobenzoic acid

  • CAS NO.:118-97-8
  • Empirical Formula: C7H3ClN2O6
  • Molecular Weight: 246.56
  • MDL number: MFCD00007080
  • EINECS: 204-290-1
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-29 11:48:30
4-Chloro-3,5-dinitrobenzoic acid Structural

What is 4-Chloro-3,5-dinitrobenzoic acid?

Chemical properties

yellow crystals

The Uses of 4-Chloro-3,5-dinitrobenzoic acid

4-Chloro-3,5-dinitrobenzoic-15N2 Acid is an intermediate in synthesizing Lodoxamide-15N2,d2 (L469367), a labelled form of Lodoxamide. It is an antiallergic drug that acts as a mast cell stabilizer. It is effective in the treatment of allergic conjunctivitis and in decreasing vascular permeability.

Hazard

irritant

Synthesis

The synthesis of 4-Chloro-3,5-dinitrobenzoic acid is as follows:
4-chloro-benzoic acid  (20 g, 0.128 mol) was dissolved in H2SO4 (d = 1.835 g/mL, 300 mL) at80 C, and KNO3 (66 g, 0.65 mol) was added. The reaction mixture was heated to 125 C using ahigh-pressure flask and kept for 2 h, after which the reaction was cooled to rt and poured onto ice.The yield of 4-Chloro-3,5-dinitrobenzoic acid was 28 g (89%) .
synthesis of 4-Chloro-3,5-dinitrobenzoic acid.png


Purification Methods

Crystallise the acid from EtOH/ H2O, EtOH or *C6H6. The 1:1 naphthalene complex (by fusing various ratios of ingredients and recrystallising from EtOH) has m 122o. [Beilstein 9 H 416, 9 III 1953, 9 IV 1360.]

Properties of 4-Chloro-3,5-dinitrobenzoic acid

Melting point: 159-162 °C (lit.)
Boiling point: 315°C
Density  1.9543 (rough estimate)
refractive index  1.6500 (estimate)
Flash point: 186°C
storage temp.  Sealed in dry,2-8°C
solubility  soluble in Methanol
form  powder to crystal
pka 2?+-.0.10(Predicted)
color  Light orange to Yellow to Green
BRN  668253
InChI InChI=1S/C7H3ClN2O6/c8-6-4(9(13)14)1-3(7(11)12)2-5(6)10(15)16/h1-2H,(H,11,12)
CAS DataBase Reference 118-97-8(CAS DataBase Reference)
EPA Substance Registry System Benzoic acid, 4-chloro-3,5-dinitro- (118-97-8)

Safety information for 4-Chloro-3,5-dinitrobenzoic acid

Signal word Warning
Pictogram(s)
ghs
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 4-Chloro-3,5-dinitrobenzoic acid

InChIKey PCTFIHOVQYYAMH-UHFFFAOYSA-N
SMILES C(O)(=O)C1=CC([N+]([O-])=O)=C(Cl)C([N+]([O-])=O)=C1

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