4-tert-Butyltoluene
4-tert-Butyltoluene (CAS: 98-51-1) is an aromatic organic compound with the linear formula (CH3)3CC6H4CH3 and a molecular weight of 148.24 g/mol. This flammable liquid serves as a versatile building block in organic synthesis. It is commonly employed in the chemical industry for the production of various chemical intermediates and as a reagent in research and development laboratories. Its properties make it suitable for specific alkylation and functionalisation reactions.
- Synonyms
- p-tert-ButyltolueneToluene, p-(1,1-dimethylethyl)-4-(1,1-Dimethylethyl)toluene1-tert-Butyl-4-methylbenzenep-Cymene, tert-butyl deriv.4-tert-Butyl-1-methylbenzene

Organic Synthesis Intermediate
4-tert-Butyltoluene is used as a foundational material for synthesising more complex organic molecules. Its structure allows for various chemical modifications, making it valuable in the development of novel compounds.
Chemical Research and Development
In R&D settings, this compound functions as a reagent or starting material for exploring new synthetic pathways and chemical transformations. Its defined properties facilitate predictable reaction outcomes.
Building Block for Specialty Chemicals
The compound acts as a key building block for producing specialty chemicals. Its tert-butyl group and toluene moiety offer specific steric and electronic properties valuable in fine chemical manufacturing.
| Molecular weight | 148.24 |
|---|---|
| Linear formula | (CH3)3CC6H4CH3 |
| Assay | 95% |
| Boiling point | 191 °C(lit.) |
| Density | 0.858 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.492(lit.) |



Hazard statements
- H226Flammable liquid and vapour
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 54 °C / 129.2 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 10-20/21/22-36/37/38-51/53 |
| Safety statements (S) | 16-26-36/37/39-45-61 |
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-tert-Butyltoluene used for?
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4-tert-Butyltoluene is primarily used as an intermediate in organic synthesis and as a building block for specialty chemicals and in chemical research and development.
What is the CAS number and formula for 4-tert-Butyltoluene?
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The CAS number for 4-tert-Butyltoluene is 98-51-1, and its linear formula is (CH3)3CC6H4CH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-tert-Butyltoluene with an assay of 95%. We do not represent this product as USP, BP, or EP grade.
How should 4-tert-Butyltoluene be handled safely?
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4-tert-Butyltoluene is a flammable liquid and harmful if swallowed or inhaled. It can cause skin and serious eye irritation, and may cause respiratory irritation. Handle in a well-ventilated area, wear appropriate personal protective equipment (e.g., eyeshields, gloves, suitable respirator), and keep away from heat and open flames.
How is 4-tert-Butyltoluene packed, shipped, and exported?
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4-tert-Butyltoluene is packed in accordance with international shipping regulations for hazardous materials. As a global supplier and exporter, Tech Serve Solutions ensures compliant packaging and documentation for all shipments.
How can I request a quote or sample of 4-tert-Butyltoluene?
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To request a quote or sample, please contact our sales department via the website or direct email, providing your details and the product CAS number (98-51-1).
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