p-Methylbenzoic Acid, CAS 99-94-5, is also known as 4-methylbenzoic acid or p-toluic acid. It is an aromatic carboxylic acid used as a chemical intermediate in organic synthesis. Confirm the para-isomer identity, required analytical specification, quantity, packaging, destination and document needs before quotation.
p-Methylbenzoic Acid (p-Toluic Acid) CAS 99-94-5
- CAS: 99-94-5
- Synonyms: p-Methylbenzoic acid; 4-Methylbenzoic acid; p-Toluic acid
- Einecs: 202-803-3
- Molecular Formula: C₈H₈O₂
- Grade: Confirm the current product-specific specification.
- Package: Confirm packaging for the offered material and destination requirements.
Product Description
Alternative names: p-Methylbenzoic acid; 4-Methylbenzoic acid; p-Toluic acid.
Molecular formula: C₈H₈O₂.
Molar mass: 136.15 g/mol.
CAS Number: 99-94-5.
EINECS: 202-803-3.
Melting point: confirm the current product-specific value.
Boiling point: confirm the current product-specific value.
Physical form, appearance, and key quality limits: confirm the current product-specific specification.
Flash point and handling requirements: confirm the current product-specific value.
Vapor-pressure requirements: confirm the current product-specific value.
Solubility and formulation compatibility: confirm the current product-specific value.
p-Methylbenzoic Acid is an aromatic carboxylic acid. Confirm the offered material by CAS 99-94-5 because ortho-, meta-, and para-toluic acid isomers are not interchangeable.
Typical use: p-Methylbenzoic Acid is an aromatic intermediate used in organic synthesis. Confirm the required para-isomer identity and analytical specification.
FAQ - Technical & Supply Chain
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Q:
What is p-Methylbenzoic Acid used for?
A: p-Methylbenzoic Acid, also called 4-Methylbenzoic Acid or p-Toluic Acid, is an aromatic carboxylic-acid intermediate. It is used in pharmaceuticals such as para-aminomethylbenzoic acid and p-tolunitrile, plus agrochemicals, dyes, pigments, photosensitive materials, polymer stabilizers and other organic synthesis routes. -
Q:
Why must the para isomer be specified for Methylbenzoic Acid?
A: The toluic acid isomers are not interchangeable. p-Methylbenzoic Acid is CAS 99-94-5, while m-toluic acid is CAS 99-04-7 and o-toluic acid is CAS 118-90-1. They differ in melting behavior, reactivity and downstream suitability, so the complete name, CAS and para-isomer requirement should be stated. -
Q:
What should be specified when ordering p-Methylbenzoic Acid?
A: Specify GC or HPLC assay, water, color and appearance, melting range, and limits for o-toluic acid, m-toluic acid, benzoic acid or other related impurities. Confirm the physical form, quantity, packaging and destination acceptance against the current product-specific specification. -
Q:
What physical properties identify p-Methylbenzoic Acid?
A: It is usually a white to pale-yellow crystalline solid or powder with a melting range around 177-182 degrees Celsius, commonly cited near 179-181 degrees Celsius, a boiling point around 274-275 degrees Celsius and a density near 1.06 g/cm3 at 20 degrees Celsius. Lot acceptance should use the current specification rather than literature values alone. -
Q:
How should p-Methylbenzoic Acid be stored and handled?
A: Store it in a cool, dry, well-ventilated area in tightly closed containers, away from strong oxidizers, strong bases and incompatible materials. Minimize dust generation and use the current product-specific safety information for personal protection, spill handling and local disposal requirements.
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