Butyl butyrate

Also known as: n-Butyl butyrate, n-Butyl butanoate, Butyl n-butyrate, Butyl butanoate, Butyric acid butyl ester, Butanoic acid, butyl ester, 1-Butyl butyrate, Butyl butylate, n-Butyl n-butyrate

Butyl butyrate (CAS 109-21-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H16O2 and a molecular weight of 144.211 g/mol. Key properties include a melting point of -92 °C, a boiling point of 165.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 49.4±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 109-21-7
Jingsj CID: J-1516147-4
Molecular Formula: C₈H₁₆O₂
Molecular Weight: 144.211 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-92 °C
Boiling Point	165.0±0.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	49.4±0.0 °C
Exact Mass	144.115036
PSA	26.30000
LogP	2.83
Vapor Pressure	1.9±0.3 mmHg at 25°C
Refractive Index	1.413

GHS Safety & Compliance

FlammableSignal word: Warning

H226 — Flammable liquid and vapour

Frequently Asked Questions

What is the CAS number of Butyl butyrate?

The CAS number of Butyl butyrate is 109-21-7.

What are the molecular formula and molecular weight of Butyl butyrate?

Butyl butyrate has molecular formula C8H16O2 and molecular weight 144.211 g/mol.

Is Butyl butyrate hazardous?

Butyl butyrate has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.

What are the upstream and downstream products of Butyl butyrate?

For Butyl butyrate, Upstream Products: Butyraldehyde, 1-Butanol, Diketene; Downstream Products: N-Acetyl-L-phenylalanine methyl ester, 1-Butene, 2-butene.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Butyl butyrate (CAS 109-21-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1516147-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.