Ethyl 4-methylbenzenesulfonate

Also known as: Ethyl p-toluenesulfonate, p-Toluenesulfonic acid ethyl ester, Ethyl tosylate, Ethyl p-tosylate, 4-Methylbenzenesulfonic acid ethyl ester, Benzenesulfonic acid, 4-methyl-, ethyl ester, Ethyl p-TS

Ethyl 4-methylbenzenesulfonate (CAS 80-40-0) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C9H12O3S and a molecular weight of 200.25 g/mol. Key properties include a melting point of 29-33 °C(lit.), a boiling point of 306.2±11.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 157.8±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 80-40-0
Jingsj CID: J-34028-3
Molecular Formula: C₉H₁₂O₃S
Molecular Weight: 200.25 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	29-33 °C(lit.)
Boiling Point	306.2±11.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	157.8±0.0 °C
Exact Mass	200.050720
PSA	51.75000
LogP	1.83
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.513
Additional Property	Insoluble

Customs & Trade Information

HS Code	29041000

Frequently Asked Questions

What is the CAS number of Ethyl 4-methylbenzenesulfonate?

The CAS number of Ethyl 4-methylbenzenesulfonate is 80-40-0.

What are the molecular formula and molecular weight of Ethyl 4-methylbenzenesulfonate?

Ethyl 4-methylbenzenesulfonate has molecular formula C9H12O3S and molecular weight 200.25 g/mol.

What are the upstream and downstream products of Ethyl 4-methylbenzenesulfonate?

For Ethyl 4-methylbenzenesulfonate, Upstream Products: Ethanol, p-Toluenesulfonic acid, p-Toluenesulfonyl chloride; Downstream Products: ETHYL 3-ETHOXYBUT-2-ENOATE, ethyl 2,2-diethylacetoacetate, Ethyl 2-ethyl-3-oxobutanoate.

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. "Ethyl 4-methylbenzenesulfonate (CAS 80-40-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34028-3 (accessed 2026-11-09).

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