4-methyl-benzoic acid, CAS No. 99-94-5

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99-94-5

Catalog No. EBD2205224

CAS 99-94-5

Name 4-methyl-benzoic acid

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Basic Information

Synonyms: para-toluicacid p-carboxytoluene p-toluic p-methylbenzoicacid rarechemalbo0067 p-toluylicacid ptla p-Toluicacid 4-Methylbenzoicacid crithminicacid Toluenecarboxylicacid ParaToluicAcid(PTA)

Molecular Formula: C8H8O2

Molecular Weight: 136.15

MDL Number: MFCD00002565

Categories: Synthetic Chemistry > Organic Building Blocks > Carboxylic Acids and Esters Materials Chemistry > Polymers and Macromolecular Materials > Polyester and Bio-based Polymer Precursors

Product Description:

4-Methylbenzoic acid (p-toluic acid, CAS 99-94-5) is an aromatic carboxylic acid with the chemical formula C8H8O2. It is a white crystalline solid with a melting point of 179-181 °C. It is a derivative of benzoic acid with a methyl group substituted at the para position. This compound serves as a versatile organic synthesis building block. It is a key intermediate in the production of various fine chemicals, pharmaceuticals, and agrochemicals. For example, it is used in the synthesis of the antihypertensive drug telmisartan. Furthermore, it acts as a monomer or precursor in polymer chemistry, particularly for the synthesis of polyesters and liquid crystal polymers, where its aromatic structure contributes to material rigidity and thermal stability. 4-Methylbenzoic acid is also employed in organic synthesis as a starting material for the preparation of acid chlorides, esters, and amides. It finds use in the manufacture of dyes, perfumes, and as a preservative in some industrial applications. Standard safety precautions for handling carboxylic acids should be observed.

Physical Properties

Melting Point: 177-180 °C(lit.)

Boiling Point: 274-275 °C(lit.)

Flash Point: 181°C

Density: 1,06 g/cm3

Solubility: water: <0.1 g/100 mL at 19 °C

Storage: Store at RT.

Analytical Data

Appearance: colourless crystals or white crystalline powder