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STS0201

Sigma-Aldrich

ECO TWEEN® 40

greener alternative

viscous liquid

Synonym(s):

TWEEN® 40, Polyoxyethylenesorbitan monopalmitate

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About This Item

CAS Number:
9005-66-7
MDL number:
MFCD00165345
UNSPSC Code:
12161902
NACRES:
NA.28
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description

non-ionic

Quality Level

200

Assay

~90.0% (GC)

form

viscous liquid

mol wt

estimated mol wt 1277

composition

Palmitic acid, ~90.0% (balance primarily stearic acid)

greener alternative product characteristics

Use of Renewable Feedstocks
Design for Degradation
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

CMC

0.027 (20-25°C)

solubility

water: 100 mg/mL, clear to slightly hazy, faintly yellow

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1 of 4

This Item
STS0204STS0200STS0205
ECO TWEEN® 40 viscous liquid

STS0201

ECO TWEEN® 40

ECO TWEEN® 80 viscous liquid

STS0204

ECO TWEEN® 80

ECO TWEEN® 20 viscous liquid

STS0200

ECO TWEEN® 20

ECO TWEEN® 85

STS0205

ECO TWEEN® 85

form

viscous liquid

form

viscous liquid

form

viscous liquid

form

viscous liquid

assay

~90.0% (GC)

assay

≥58%

assay

≥40%

assay

≥50%

mol wt

estimated mol wt 1277

mol wt

micellar avg mol wt 79.000, average mol wt 1310

mol wt

~1228

mol wt

-

HLB

15.6

HLB

15.0

HLB

16.7

HLB

11.0

solubility

water: 100 mg/mL, clear to slightly hazy, faintly yellow

solubility

water: 100 mg/mL, clear to slightly hazy, faintly yellow

solubility

water: 100 mg/mL, clear, faintly yellow to yellow

solubility

-

CMC

0.027 (20-25°C)

CMC

0.012 mM (20-25°C)

CMC

0.06 mM (20-25°C)

CMC

-

General description

ECO Tween® 40, also known as Polyoxyethylenesorbitan monopalmitate, is a bio-based, nonionic detergent manufactured from natural fatty acid (palmitic acid). This surfactant, derived from natural sources, provides various functional advantages, such as detergency, emulsification, and wetting. Its versatility makes it well-suited for a variety of applications in biochemical and biological research, with common uses including cell lysis, nuclei isolation and cell fractionation.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Green Chemistry. This product is a biobased surfactant and is aligned with the 7th principle of Green Chemistry "Use of Renewable Feedstocks" and the 10th principle "Design for Degradation".

Application

Non-ionic detergent used for cell lysis, nuclei isolation and cell fractionation.
Polyoxyethylenesorbitan monopalmitate, or Tween® 40, has been used in a study to assess the determination of iodide in urine based on a chemiluminescence system. [1] It has also been used in a study to investigate the delivery of astaxanthin and canthaxanthin to HepG2 cells. [2]

Features and Benefits

  • 100 % Renewable
  • 100 % Bio-based
  • Certified to the USDA BioPreferred Program
  • Lower carbon footprint than petrochemical-based versions
  • High-purity chemical suitable for a wide variety of research applications

Other Notes

For additional information on our range of Biochemicals, please complete this form.

Legal Information

ECO TWEEN is a registered trademark of Croda Inc.
TWEEN is a registered trademark of Croda International PLC

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

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