Sorbitan monolaurate

山梨醇酐月桂酸酯

Also known as: Span 20, Sorbitan laurate, Sorbitan monododecanoate, Arlacel 20, Glycomul LC, Emulsifier S20, Sorbitan, monododecanoate, Sorbitan M, Radiasurf 7125, Emsorb 2515, (4ξ)-1,4-Anhydro-6-O-dodecanoyl-D-xylo-hexitol, D-Glucitol, 1,4-anhydro-6-O-(1-oxododecyl)-, (4ξ)-

Sorbitan monolaurate (CAS 1338-39-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H34O6 and a molecular weight of 346.459 g/mol. It is also known as Span 20, Sorbitan laurate and Sorbitan monododecanoate. Key properties include a boiling point of 516.1±45.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 176.9±22.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1338-39-2
Jingsj CID: J-9796-1
Molecular Formula: C₁₈H₃₄O₆
Chinese Name: 山梨醇酐月桂酸酯
Molecular Weight: 346.459 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	516.1±45.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	176.9±22.2 °C
Exact Mass	346.235535
PSA	96.22000
LogP	4.47
Vapor Pressure	0.0±3.0 mmHg at 25°C
Refractive Index	1.504

Activity & Biological Data

Additional Information	[1]. Brandner J D. The composition of NF-defined emulsifiers: Sorbitan monolaurate, monopalmitate, monostearate, monooleate, polysorbate 20, polysorbate 40, polysorbate 60, and polysorbate 80[J]. Drug development and industrial pharmacy, 1998, 24(11): 1049-1054. [2]. Elder DP, et al. Pharmaceutical excipients - quality, regulatory and biopharmaceutical considerations. Eur J Pharm Sci. 2016 May 25;87:88-99.

Additional Information

[1]. Brandner J D. The composition of NF-defined emulsifiers: Sorbitan monolaurate, monopalmitate, monostearate, monooleate, polysorbate 20, polysorbate 40, polysorbate 60, and polysorbate 80[J]. Drug development and industrial pharmacy, 1998, 24(11): 1049-1054. [2]. Elder DP, et al. Pharmaceutical excipients - quality, regulatory and biopharmaceutical considerations. Eur J Pharm Sci. 2016 May 25;87:88-99.

Customs & Trade Information

HS Code	34021300

Frequently Asked Questions

What is the CAS number of Sorbitan monolaurate?

The CAS number of Sorbitan monolaurate is 1338-39-2.

What are the molecular formula and molecular weight of Sorbitan monolaurate?

Sorbitan monolaurate has molecular formula C18H34O6 and molecular weight 346.459 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Sorbitan monolaurate (CAS 1338-39-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9796-1 (accessed 2026-10-28).

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