Pentyl acetate
Pentyl acetate (CAS: 628-63-7, Formula: CH3COO(CH2)4CH3) is an ester with a molecular weight of 130.18 g/mol. It is recognised for its characteristic banana-like odour, leading to its use as a flavouring agent and in perfumery. This compound also serves as a valuable test odorant in the study of olfactory function and psychosocial responses to scent.
- IUPAC
- Amyl acetate
- Synonyms
- Amyl acetatePentyl ethanoateAcetic acid pentyl ester

Flavor and Fragrance Industry
Pentyl acetate is widely employed as a key component in creating artificial banana flavourings. Its pleasant, fruity aroma also makes it a useful ingredient in various perfumes and cosmetic products.
Olfactory Research
This compound serves as a standard odorant in scientific studies investigating the mechanisms of smell. It aids researchers in understanding olfactory perception and the human response to specific scents.
Chemical Synthesis
As an ester, pentyl acetate can function as a building block or intermediate in various organic synthesis pathways within the chemical industry.
| Molecular weight | 130.18 |
|---|---|
| Linear formula | CH3COO(CH2)4CH3 |
| Assay | 99% |
| Boiling point | 142-149 °C(lit.) |
| Density | 0.876 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.402(lit.) |
| Vapour pressure | 4 mmHg (20 °C) |
| Melting point | −100 °C(lit.) |
| Vapour density | 4.5 (vs air) |
| Autoignition temp | 680 °F |
| Application | Banana essence. Used as test odorant in studies of olfactory function and in studies of the psychosocial effects of odor. |

Hazard statements
- H226Flammable liquid and vapour
- H412Harmful to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 1104 3 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| Risk statements (R) | 10-66 |
| Safety statements (S) | 23-25 |
| Supplemental hazards | Repeated exposure may cause skin dryness or cracking. |
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 Pentyl Acetate used for?
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Pentyl acetate is used as a flavouring agent, particularly for banana essence, and as a test odorant in studies of olfactory function and the psychosocial effects of odour. It also finds applications in chemical synthesis.
What is the CAS number and chemical formula for Pentyl Acetate?
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The CAS number for Pentyl acetate is 628-63-7, and its chemical formula is CH3COO(CH2)4CH3.
What grade and purity does Tech Serve Solutions supply for Pentyl Acetate?
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Tech Serve Solutions supplies Pentyl acetate with an assay of 99%. We do not represent this product as USP, BP, or EP grade unless explicitly stated otherwise in the product documentation.
How should Pentyl Acetate be handled safely?
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Pentyl acetate is a flammable liquid and vapour (H226). It can cause skin dryness or cracking with repeated exposure (Supplemental Hazard Statement). Appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection, should be used. Store away from ignition sources.
Is Pentyl Acetate available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Pentyl acetate.
How can I request a quote or sample of Pentyl Acetate?
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Please contact our sales team through the website or by phone to request a quote or sample of Pentyl Acetate.
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