Skip to content
Molekula

Molekula

Merck Millipore TWEEN™ 20 Detergent, Molecular biology grade, MilliporeSigma™ (fisher CAT 12684507)

SKU 90032149 CAS 9005-64-5 [ROH][R'OH]C4H5OCH2[R''OH][R'''OH] , R=(OC2H4)x MW ca. 1228 Available on enquiry

Supplying 4,500+ customers in over 80 countries

ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Certificate of Analysis with every batch

TWEEN™ 20 is a non-ionic surfactant widely used in molecular biology for cell membrane permeabilization, protein solubilization, and ELISA assays to reduce surface tension and enhance reagent mixing. This molecular biology-grade detergent ensures low endotoxin levels and minimal interference with biological assays. CAS 9005-64-5, molecular formula [ROH][R'OH]C4H5OCH2[R''OH][R'''OH] (R=(OC2H4)x), approximate molecular weight 1228. Stored at ambient conditions with no signal word required. Molekula supplies TWEEN™ 20 from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.

Contact sales
Expect a response within hours Speak to a chemist: +44 (0) 3302 000333

Overview

SKU
90032149
CAS Number
9005-64-5
Molecular Formula
[ROH][R'OH]C4H5OCH2[R''OH][R'''OH] , R=(OC2H4)x
Molecular Weight
ca. 1228

See all 4 other grades of CAS 9005-64-5 →

Frequently asked questions

What is TWEEN™ 20 detergent primarily used for in molecular biology?

TWEEN™ 20 is commonly used as a non-ionic surfactant to reduce surface tension, aid in solubilizing lipids, and prevent nonspecific binding in assays like ELISA, Western blotting, and cell culture applications.

What is the chemical formula and molecular weight of TWEEN™ 20?

The chemical formula is [ROH][R'OH]C4H5OCH2[R''OH][R'''OH], where R=(OC2H4)x, and the approximate molecular weight is 1228 g/mol.

How should TWEEN™ 20 be stored?

Store TWEEN™ 20 at ambient temperature (room temperature) in a tightly sealed container to prevent contamination.

Is TWEEN™ 20 available in different grades, and what grade does Molekula supply?

Yes, TWEEN™ 20 is available in various grades, and Molekula supplies it in **molecular biology grade** (equivalent to MilliporeSigma™/Fisher Scientific CAT #12684507).

Can Molekula supply TWEEN™ 20 in bulk quantities?

Yes, Molekula can provide TWEEN™ 20 in bulk quantities—please contact us for specific packaging options and minimum order quantities.

What documentation comes with an order of TWEEN™ 20 from Molekula?

Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and a **Product Information Sheet** detailing specifications, intended use, and handling instructions.

Related products

Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.

Request a quote
Tell us the product and the quantity you need — including quantities larger than our listed packs. Expect a response within hours.
Full name
Company
Email
Phone (optional)
Product
Quantity needed

Ask for whatever you actually need — the pack sizes on our catalogue pages are a starting point, not a limit.

Message
View basket