(S)-1,2-Butanediol

Also known as: (2S)-butane-1,2-diol, (S)-Butane-1,2-diol, (S)-1,2-Butylene Glycol, (S)-1,2-Dihydroxybutane, (-)-1,2-Butylene glycol, (-)(S)-butanediol-(1,2), UNII:RUN0H01QEU, 1,2-Butanediol, (2S)-

(S)-1,2-Butanediol (CAS 73522-17-5) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C4H10O2 and a molecular weight of 90.121 g/mol. Key properties include a boiling point of 190.3±8.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 93.3±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 73522-17-5
Jingsj CID: J-932002-9
Molecular Formula: C₄H₁₀O₂
Molecular Weight: 90.121 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	190.3±8.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	93.3±0.0 °C
Exact Mass	90.068077
PSA	40.46000
LogP	-0.81
Vapor Pressure	0.1±0.8 mmHg at 25°C
Refractive Index	1.438

Customs & Trade Information

HS Code	2905399090
Summary	2905399090 other diols。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:5.5%。general tariff:30.0%

Frequently Asked Questions

What is the CAS number of (S)-1,2-Butanediol?

The CAS number of (S)-1,2-Butanediol is 73522-17-5.

What are the molecular formula and molecular weight of (S)-1,2-Butanediol?

(S)-1,2-Butanediol has molecular formula C4H10O2 and molecular weight 90.121 g/mol.

What are the upstream and downstream products of (S)-1,2-Butanediol?

For (S)-1,2-Butanediol, Upstream Products: (S)-Butyl 2-hydroxybutanoate, (S)-3-Butene-1,2-diol, (S)-2-Hydroxybutyric acid; Downstream Products: [(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate.

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. "(S)-1,2-Butanediol (CAS 73522-17-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-932002-9 (accessed 2026-11-09).

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