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TWEEN ® 20

ECO TWEEN® 20
产品编号:4077122
规格:viscous liquid
CAS NO:9005-64-5
包装规格:250 ML,1 L
产品类别:进口试剂
品牌:Sigma-Aldrich
优惠价:立即咨询
产品编号包装单位单价(元)国内现货国外库存询价单
4077122250 ML802
40771221 L2280
产品别名

9005-64-5

TWEEN ® 20

ECO TWEEN® 20

Tween 20

Polyethylene glycol sorbitan monolaurate

Polyoxyethylenesorbitan monolaurate

聚氧乙烯脱水山梨醇单月桂酸酯

聚氧乙烯山梨糖醇酐单月桂酸酯

结构式
基本信息
MDL number
MFCD00165986
General description【一般描述】
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".

TWEEN 20 is a polyoxyethylene sorbitol ester that belongs to the polysorbate family. It is a nonionic detergent having a molecular weight of 1,225 daltons, assuming 20 ethylene oxide units, 1 sorbitol, and 1 lauric acid as the primary fatty acid. The ethylene oxide subunits are responsible for the hydrophilic nature of the surfactant, while the hydrocarbon chains provide the hydrophobic environment. Sorbitol forms the backbone ring to which the ethylene oxide polymers are attached.
Application【应用】
TWEEN 20 is a nonionic detergent widely used in biochemical applications. It has been used as an emulsifying agent for the preparation of stable oil-in-water emulsions. TWEEN 20 has been used in pre-extraction of membranes to remove peripheral proteins (used at 2% for extraction of membrane-bound proteins).
TWEEN 20 has been used as a blocking agent for membrane based immunoassays at a typical concentration of 0.05%. TWEEN 20 can be used for lysing mammalian cells at a concentration of 0.005 to 0.5%.
TWEEN 20 has been used as a component of:
  • washing buffer and blocking buffer in Western blotting
  • blocking buffer in immunohistochemistry
  • washing buffer in ELISA (enzyme linked immunosorbent assay)
  • reaction mixture in PCR (polymerase chain reaction)

非离子洗涤剂
Features and Benefits【特点和优势】
  • 100 % Renewable
  • 100 % Bio-based
  • Certified to the USDA BioPreferred Program
  • Lower carbon footprint than petrochemical-based versions
Preparation Note【制备说明】
TWEEN 20 is miscible in water (100mg/mL), yielding a clear, yellow solution. It is also miscible with alcohol, dioxane, and ethyl acetate. TWEEN 20 is insoluble in liquid paraffin and fixed oils.
Legal Information【法律信息】
TWEEN is a registered trademark of Croda International PLC
产品性质
Quality Level【质量水平】
200
description【描述】
non-ionic
Assay【测定】
≥40.0% (GC)
form【形式】
viscous liquid
mol wt【分子量】
~1228
composition【组成】
lauric acid, ≥40% (balance primarily myristic, palmitic, and stearic acids)
greener alternative product characteristics【环保替代产品特性】
Use of Renewable Feedstocks
Design for Degradation
Learn more about the Principles of Green Chemistry.
impurities【杂质】
≤3.0% water
refractive index【折射率】
n20/D 1.468 (lit.)
CMC
0.06 mM (20-25℃)
acid number【酸值】
≤2.2 mg KOH/g
Hydroxyl Value【羟基值】
96‑108 mg KOH/g
transition temp【转变温度】
cloud point 76 ℃
density
1.095 g/mL at 25 ℃ (lit.)
HLB
16.7
greener alternative category【环保替代产品分类】
Aligned
InChI
1S/C26H50O10/c1-2-3-4-5-6-7-8-9-10-11-24(30)34-19-18-31-20-22(32-15-12-27)26-25(35-17-14-29)23(21-36-26)33-16-13-28/h22-23,25-29H,2-21H2,1H3
InChI key
HMFKFHLTUCJZJO-UHFFFAOYSA-N
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