4-(Chloromethyl)benzoic acid
4-(Chloromethyl)benzoic acid (CAS: 1642-81-5, Formula: C8H7ClO2) is a key organic building block with a molecular weight of 170.59 g/mol. This carboxylic acid derivative is characterised by its reactive chloromethyl group, making it a versatile intermediate in organic synthesis. It is frequently employed in the preparation of diverse chemical compounds, pharmaceuticals, and materials. Tech Serve Solutions supplies this compound with a purity of ≥98.0% (T).
- IUPAC
- α-Chloro-p-toluic acid,α-Chloro-p-toluylic acid
- Synonyms
- α-Chloro-p-toluic acidα-Chloro-p-toluylic acid

Pharmaceutical Intermediate
4-(Chloromethyl)benzoic acid serves as a crucial intermediate in the synthesis of active pharmaceutical ingredients (APIs). Its structure allows for facile modification to create complex molecules with potential therapeutic applications.
Organic Synthesis Building Block
This compound is extensively used as a building block in general organic synthesis. The chloromethyl moiety readily participates in nucleophilic substitution reactions, enabling the construction of diverse carbon frameworks.
Material Science Applications
It can be incorporated into polymers or functional materials where the benzoic acid or chloromethyl group imparts specific properties. This opens avenues for developing novel materials with tailored characteristics.
| Molecular weight | 170.59 |
|---|---|
| Empirical formula | C8H7ClO2 |
| Assay | ≥98.0% (T) |
| Grade | purum |
| Melting point | 201-202 °C(lit.)202-205 °C |


Hazard statements
- H314Causes severe skin burns and eye damage
- H334May cause allergy or asthma symptoms if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3261 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34-42/43 |
| Safety statements (S) | 22-26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-(Chloromethyl)benzoic acid used for?
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4-(Chloromethyl)benzoic acid is primarily used as a versatile building block in organic synthesis and as an intermediate in the preparation of pharmaceuticals and other fine chemicals.
What are the CAS number and formula for 4-(Chloromethyl)benzoic acid?
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The CAS number is 1642-81-5, and the molecular formula is C8H7ClO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-(Chloromethyl)benzoic acid with a purity of ≥98.0% (T), specified as grade 'purum'.
How should 4-(Chloromethyl)benzoic acid be handled safely?
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4-(Chloromethyl)benzoic acid is a Danger substance (GHS05, GHS08) that causes severe skin burns and eye damage (H314) and may cause allergy or asthma symptoms or breathing difficulties if inhaled (H334). It requires stringent safety precautions, including the use of safety shields, gloves, and appropriate respiratory protection (type N100 US/P3 EN143 filters).
How is this chemical packed and shipped by TSS?
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As a global supplier and exporter, Tech Serve Solutions ensures that 4-(Chloromethyl)benzoic acid is packed and shipped in compliance with all relevant regulations for hazardous materials, including UN 3261 classification.
How can I request a quote or sample for 4-(Chloromethyl)benzoic acid?
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You can request a quote or sample by contacting the TSS sales team through the website or by calling our customer service line.
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