Technical Data
P4379
Polyoxyethylenesorbitan Monolaurate (Tween 20)
1L
4L
20L
Biochemicals Storage: RTShipping: RT
Tween-20 is a polysorbate surfactant whose stability and relative non-toxicity allow it to be used as a detergent and emulsifier in a number of domestic, scientific, and pharmacological applications. It is a polyoxyethylene derivative of sorbitan monolaurate, and is distinguished from the other members in the Tween range by the length of the polyoxyethylene chain. The commercial product contains a range of chemical species.

Appearance:
Yellow to amber viscous liquid.

Hydroxyl Number:
96-108

Water:
3%

Residue of Ignition:
0.25%

Arsenic:
0.0003%

Heavy Metals:
0.001%

RNase, DNase:
None Detected

Biological applications:
Tween 20 has a broad range of applications. For example, it is used:
to stabilize purified protein derivative (PPD) solution, used in skin testing for tuberculosis exposure, as a blocking agent in immunologic assays, such as Western blots and ELISA and as a solubilizing agent of membrane proteins for lysing mammalian cells, at a concentration of 0.05 to 0.5%.

CAS Number:
9005-64-5
Important Note: This product as supplied is intended for rePolyoxyethylenesorbitan Monolaurate (Tween 20)
Catalog No: P4379
1L List Price: $40 Discount Price: $35
4L List Price: $120 Discount Price: $95
20L List Price: $475 Discount Price: $425

Tween-20 is a polysorbate surfactant whose stability and relative non-toxicity allow it to be used as a detergent and emulsifier in a number of domestic, scientific, and pharmacological applications. It is a polyoxyethylene derivative of sorbitan monolaurate, and is distinguished from the other members in the Tween range by the length of the polyoxyethylene chain. The commercial product contains a range of chemical species.

Appearance:
Yellow to amber viscous liquid.

Hydroxyl Number:
96-108

Water:
3%

Residue of Ignition:
0.25%

Arsenic:
0.0003%

Heavy Metals:
0.001%

RNase, DNase:
None Detected

Biological applications:
Tween 20 has a broad range of applications. For example, it is used:
to stabilize purified protein derivative (PPD) solution, used in skin testing for tuberculosis exposure, as a blocking agent in immunologic assays, such as Western blots and ELISA and as a solubilizing agent of membrane proteins for lysing mammalian cells, at a concentration of 0.05 to 0.5%.

Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.

CAS No: 9005-64-5

1. Ayorinde FO, Gelain SV, Johnson JH Jr, Wan LW. (2000). "Analysis of some commercial polysorbate formulations using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry". Rapid Communications in Mass Spectrometry 14 (22): 2116-2124. PMID 11114018. Retrieved on 7 August 2006.. 2. Joint FAO/WHO Expert Committee on Food Additives (1974). Toxicological evaluation of some food additives including anticaking agents, antimicrobials, antioxidants, emulsifiers and thickening agents. WHO Food Additives Series No. 5. World Health Organization. Retrieved on 7 August 2006search use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
1. Ayorinde FO, Gelain SV, Johnson JH Jr, Wan LW. (2000). "Analysis of some commercial polysorbate formulations using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry". Rapid Communications in Mass Spectrometry 14 (22): 2116-2124. PMID 11114018. Retrieved on 7 August 2006.. 2. Joint FAO/WHO Expert Committee on Food Additives (1974). Toxicological evaluation of some food additives including anticaking agents, antimicrobials, antioxidants, emulsifiers and thickening agents. WHO Food Additives Series No. 5. World Health Organization. Retrieved on 7 August 2006

Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.