Isopentyl isobutyrate

异丁酸异戊酯

Also known as: 3-Methylbutyl 2-methylpropanoate, 3-Methylbutyl isobutyrate, Isoamyl isobutyrate, Isopentyl-2-methyl propanoate, 2-methylpropanoic acid 3-methylbutyl ester, Isobutyric acid isoamyl ester

Isopentyl isobutyrate (CAS 2050-01-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H18O2 and a molecular weight of 158.23800 g/mol. It is also known as 3-Methylbutyl 2-methylpropanoate, 3-Methylbutyl isobutyrate and Isoamyl isobutyrate. Key properties include a melting point of -70ºC, a boiling point of 169-171 °C(lit.), a density of 0.856 g/mL at 25 °C(lit.) and a flash point of 129 °F. 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.
2050-01-3
Jingsj CID
J-20306-1
Molecular Formula
C9H18O2
Chinese Name
异丁酸异戊酯
Molecular Weight
158.23800 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point-70ºC
Boiling Point169-171 °C(lit.)
Density0.856 g/mL at 25 °C(lit.)
Flash Point129 °F
Exact Mass158.13100
PSA26.30000
LogP2.23170
Vapor Pressure1.89mmHg at 25°C
Refractive Indexn20/D 1.406(lit.)
StabilityStable. Combustible. Incompatible with strong oxidizing agents, strong reducing agents.

GHS Safety & Compliance

FlammableSignal word: Warning
  • H226 — Flammable liquid and vapour

Customs & Trade Information

HS Code2915900090
Summary2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Isopentyl isobutyrate?

The CAS number of Isopentyl isobutyrate is 2050-01-3.

What are the molecular formula and molecular weight of Isopentyl isobutyrate?

Isopentyl isobutyrate has molecular formula C9H18O2 and molecular weight 158.23800 g/mol.

Is Isopentyl isobutyrate hazardous?

Isopentyl isobutyrate has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.

What are the upstream and downstream products of Isopentyl isobutyrate?

For Isopentyl isobutyrate, Upstream Products: 3-Methyl-1-butanol, 2-Methyl-1-propanol, Isoamyl formate.

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

Last updated:

How to cite: Jingsj. "Isopentyl isobutyrate (CAS 2050-01-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-20306-1 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.