Polysorbate 20

Also known as: Tween 20, Polyoxyethylene (20) sorbitan monolaurate, Polyoxyethylene sorbitan monolaurate, Polysorbate 20 (NF), Polysorbate (INN), Sorbitan monolaurate polyoxyethylene ether, PEG-44 sorbitan laurate, PEG-75 sorbitan laurate, T-20 emulsifier

Polysorbate 20 (CAS 9005-64-5) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C26H50O10 and a molecular weight of 604.813 g/mol. Key properties include a boiling point of 695.8±55.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 207.1±25.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 9005-64-5
Jingsj CID: J-40180-3
Molecular Formula: C₂₆H₅₀O₁₀
Molecular Weight: 604.813 g/mol
Category: Esters
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	695.8±55.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	207.1±25.0 °C
Exact Mass	604.418640
PSA	133.14000
LogP	5.37
Vapor Pressure	0.0±5.0 mmHg at 25°C
Refractive Index	1.502
Additional Property	100 g/L \| 100 g/L

Activity & Biological Data

Additional Information	[1]. Yu-An Chen, et al. Evaluation of the action of Tween 20 non-ionic surfactant during enzymatic hydrolysis of lignocellulose: Pretreatment, hydrolysis conditions and lignin structure. Bioresour Technol. 2018 Dec;269:329-338. [2]. Katarzyna Hoppe, et al. The effect of polysorbate 20 on solubility and stability of candesartan cilexetil in dissolution media. AAPS PharmSciTech. 2014 Oct;15(5):1116-25. [3]. JustynaŁuczak, et al. Micelle formation of Tween 20 nonionic surfactant in imidazolium ionic liquids. Colloids and Surfaces A: Physicochemical and Engineering Aspects. Volume 471, 20 April 2015, Pages 26-37.

Additional Information

[1]. Yu-An Chen, et al. Evaluation of the action of Tween 20 non-ionic surfactant during enzymatic hydrolysis of lignocellulose: Pretreatment, hydrolysis conditions and lignin structure. Bioresour Technol. 2018 Dec;269:329-338. [2]. Katarzyna Hoppe, et al. The effect of polysorbate 20 on solubility and stability of candesartan cilexetil in dissolution media. AAPS PharmSciTech. 2014 Oct;15(5):1116-25. [3]. JustynaŁuczak, et al. Micelle formation of Tween 20 nonionic surfactant in imidazolium ionic liquids. Colloids and Surfaces A: Physicochemical and Engineering Aspects. Volume 471, 20 April 2015, Pages 26-37.

Customs & Trade Information

HS Code	34021300

Frequently Asked Questions

What is the CAS number of Polysorbate 20?

The CAS number of Polysorbate 20 is 9005-64-5.

What are the molecular formula and molecular weight of Polysorbate 20?

Polysorbate 20 has molecular formula C26H50O10 and molecular weight 604.813 g/mol.

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. "Polysorbate 20 (CAS 9005-64-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40180-3 (accessed 2026-11-06).

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