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HomeProduct name list3,4-Dichlorobenzoic acid

3,4-Dichlorobenzoic acid

  • CAS NO.:51-44-5
  • Empirical Formula: C7H4Cl2O2
  • Molecular Weight: 191.01
  • MDL number: MFCD00002492
  • EINECS: 200-099-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-29 18:21:28
3,4-Dichlorobenzoic acid Structural

What is 3,4-Dichlorobenzoic acid?

Chemical properties

White to light yellow crystal powder

The Uses of 3,4-Dichlorobenzoic acid

3,4-Dichlorobenzoic acid was employed as internal standard during the multiresidue analysis of pharmaceuticals and personal care products by ultra performance liquid chromatography-positive/negative electrospray tandem mass spectrometry. It was used to study the metabolic fate of 4-chloro-3,5-dinitrobenzoic acid.

Definition

ChEBI: A chlorobenzoic acid carrying chloro substituents at positions 3 and 4.

Synthesis Reference(s)

Journal of the American Chemical Society, 98, p. 843, 1976 DOI: 10.1021/ja00419a038

Safety Profile

Poison by subcutaneous route. When heated to decomposition it emits toxic fumes of Cl-.

Purification Methods

Crystallise the acid from aqueous EtOH (charcoal) or acetic acid. [Beilstein 9 IV 1006.] Aromatic acid impurities (to <0.05%) can be removed via the (±)--methylbenzylamine salt as described for 2,4-dichlorobenzoic acid [Ley & Yates Organic Process Research & Development 12 120 2008.]

Properties of 3,4-Dichlorobenzoic acid

Melting point: 204-206 °C (lit.)
Boiling point: 273.68°C (rough estimate)
Density  1.4410 (rough estimate)
refractive index  1.4590 (estimate)
storage temp.  Sealed in dry,Room Temperature
form  powder to crystal
pka 3.60±0.10(Predicted)
color  White to Almost white
Water Solubility  insoluble
BRN  2044777
CAS DataBase Reference 51-44-5(CAS DataBase Reference)
NIST Chemistry Reference Benzoic acid, 3,4-dichloro-(51-44-5)
EPA Substance Registry System 3,4-Dichlorobenzoic acid (51-44-5)

Safety information for 3,4-Dichlorobenzoic acid

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P271:Use only outdoors or in a well-ventilated area.
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.

Computed Descriptors for 3,4-Dichlorobenzoic acid

InChIKey VPHHJAOJUJHJKD-UHFFFAOYSA-N

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