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HomeProduct name list3,4-Dimethylbenzoic acid

3,4-Dimethylbenzoic acid

Synonym(s):asym.-o-Xylylic acid

  • CAS NO.:619-04-5
  • Empirical Formula: C9H10O2
  • Molecular Weight: 150.17
  • MDL number: MFCD00002524
  • EINECS: 210-576-7
  • Update Date: 2024-11-19 23:02:33
3,4-Dimethylbenzoic acid Structural

What is 3,4-Dimethylbenzoic acid?

Chemical properties

white to beige crystalline powder

Definition

ChEBI: A dimethylbenzoic acid in which the two methyl groups are located at positions 3 and 4.

Purification Methods

Crystallise it from EtOH or H2O (m 168-168.5o), and sublime it in vacuo. The phenyl ester has m 68o (from EtOH or pet ether) and b 155-157o/2mm. [Beilstein 9 II 353, 9 III 2441, 9 IV 1803.]

Properties of 3,4-Dimethylbenzoic acid

Melting point: 163-165 °C (lit.)
Boiling point: 271.51°C (estimate)
Density  1.0937 (estimate)
refractive index  1.5188 (estimate)
storage temp.  Sealed in dry,Room Temperature
form  Crystalline Powder
pka 4.44±0.10(Predicted)
color  White to beige
Water Solubility  129.2mg/L(temperature not stated)
BRN  907267
CAS DataBase Reference 619-04-5(CAS DataBase Reference)
NIST Chemistry Reference Benzoic acid, 3,4-dimethyl-(619-04-5)
EPA Substance Registry System 3,4-Dimethylbenzoic acid (619-04-5)

Safety information for 3,4-Dimethylbenzoic 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 P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
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-Dimethylbenzoic acid

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