p-Tolualdehyde
p-Tolualdehyde (CAS: 104-87-0), with the molecular formula CH3C6H4CHO and a molar mass of 120.15 g/mol, is an organic aromatic aldehyde. It is a valuable building block and intermediate in organic synthesis. Its characteristic aldehyde functionality allows for a range of chemical transformations, making it useful in the production of pharmaceuticals, agrochemicals, and other fine chemicals.
- IUPAC
- 4-Methylbenzaldehyde
- Synonyms
- 4-Methylbenzaldehydep-Tolyl aldehyde4-Formyltoluene

Pharmaceutical Intermediates
p-Tolualdehyde serves as a key starting material or intermediate in the synthesis of various active pharmaceutical ingredients (APIs). Its structure is incorporated into more complex molecules designed for therapeutic applications.
Agrochemical Synthesis
This aldehyde is employed in the manufacturing of certain pesticides and herbicides. Its reactive nature facilitates its conversion into compounds with specific agricultural functionalities.
Fine Chemical Production
As a versatile organic building block, p-Tolualdehyde is utilised in the synthesis of a wide array of fine chemicals, including fragrances, dyes, and specialty polymers.
Research and Development
Its reactivity and well-defined structure make p-Tolualdehyde a useful reagent in academic and industrial research laboratories for exploring new synthetic pathways and developing novel compounds.
| Molecular weight | 120.15 |
|---|---|
| Linear formula | CH3C6H4CHO |
| Assay | 97% |
| Grade | Vetec™ reagent grade |
| Boiling point | 204-205 °C(lit.)82-85 °C/11 mmHg(lit.) |
| Density | 1.019 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.545(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Flash point | 72 °C / 161.6 °F |
|---|---|
| Transport (UN / ADR) | NA 1993 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26-36 |
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 p-Tolualdehyde used for?
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p-Tolualdehyde is primarily used as an intermediate in the synthesis of pharmaceuticals, agrochemicals, and fine chemicals. It also finds application in research and development as an organic building block.
What are the CAS number and molecular formula for p-Tolualdehyde?
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The CAS number for p-Tolualdehyde is 104-87-0, and its molecular formula is CH3C6H4CHO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies p-Tolualdehyde in Vetec™ reagent grade with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should p-Tolualdehyde be handled safely?
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p-Tolualdehyde is classified as harmful if swallowed and causes skin and eye irritation, and may cause respiratory irritation. Handle with appropriate personal protective equipment in a well-ventilated area. Refer to the Safety Data Sheet for comprehensive safety information.
Is p-Tolualdehyde a controlled substance?
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The provided data does not indicate that p-Tolualdehyde is a controlled substance.
How is p-Tolualdehyde shipped and exported?
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p-Tolualdehyde is shipped and exported in compliance with relevant regulations for hazardous materials. Please contact TSS for specific shipping and export inquiries.
How can I request a quote or sample of p-Tolualdehyde?
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To request a quote or a sample of p-Tolualdehyde, please contact the Tech Serve Solutions sales team via our website or direct contact details.
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