Butyl benzoate
Butyl benzoate (CAS 136-60-7) is an organic ester with the molecular formula C11H14O2 and a molecular weight of 178.23 g/mol. This colourless to pale yellow liquid serves as a versatile chemical intermediate. Its primary applications include use as a preservative in cosmetic formulations and as a non-volatile solvent, particularly for sampling purposes in analytical chemistry.
- Synonyms
- Butyl benzoate

Cosmetic Preservative
Butyl benzoate has demonstrated efficacy as a preservative within commercial cosmetic lotions. It helps to maintain product integrity and extend shelf life by inhibiting microbial growth.
Involatile Solvent
This compound functions as a non-volatile solvent, notably employed in analytical methods. It has been utilised for the sampling of isocyanates using solid-phase extraction with silica gel.
Chemical Synthesis Intermediate
As an ester and carbonyl compound, butyl benzoate is a useful building block in organic synthesis. It can participate in various chemical transformations for the creation of more complex molecules.
| Molecular weight | 178.23 |
|---|---|
| Linear formula | C6H5COOCH2CH2CH2CH3 |
| Assay | 99% |
| Boiling point | 249 °C(lit.) |
| Density | 1.01 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.498(lit.) |
| Application | Butyl benzoate has been used as:• preservative in commercial cosmetic lotions1• as involatile solvent, for sampling of isocyanates with silica gel solid phase extraction2 |

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
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 106 °C / 222.8 °F |
| Water hazard class (WGK, DE) | 2 |
| 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 Butyl benzoate used for?
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Butyl benzoate is used as a preservative in cosmetic lotions and as an involatile solvent, for example, in sampling isocyanates with silica gel solid-phase extraction.
What is the CAS number and chemical formula for Butyl benzoate?
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The CAS number for Butyl benzoate is 136-60-7. Its linear formula is C6H5COOCH2CH2CH2CH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Butyl benzoate with a minimum assay of 99%. This is a technical/research grade material, and TSS does not represent it as USP, BP, or EP grade.
How should Butyl benzoate be handled safely?
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Butyl benzoate is harmful if swallowed, causes skin irritation, causes serious eye irritation, and may cause respiratory irritation (H302, H315, H319, H335). Always use appropriate personal protective equipment, including safety eyeshields, chemical-resistant gloves, and ensure adequate ventilation. In case of accidental exposure, follow P261 and P305 + P351 + P338 precautions.
Is Butyl benzoate a controlled substance?
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Based on the provided data, Butyl benzoate is not listed as a controlled substance. However, end-user regulations may apply.
How are Butyl benzoate products shipped and exported?
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Tech Serve Solutions is an experienced global supplier and exporter of fine chemicals, ensuring appropriate packaging and documentation for international shipments in compliance with all relevant regulations.
How can I request a sample or quote for Butyl benzoate?
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To request a sample or a quotation for Butyl benzoate, please contact our sales team directly via the website or by calling our customer service number.
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