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Merck
CN

P2287

TWEEN ® 20

viscous liquid, suitable for cell culture

别名:

聚山梨酯 20, 聚氧乙烯山梨糖醇酐单月桂酸酯, 聚氧乙烯脱水山梨醇单月桂酸酯

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关于此项目

化学文摘社编号:
9005-64-5
UNSPSC Code:
12161900
NACRES:
NA.21
MDL number:
MFCD00165986

主要文件

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产品名称

TWEEN ® 20, viscous liquid, suitable for cell culture

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

SMILES string

CCCCCCCCCCCC(=O)OCCOCC(C1C(C(CO1)OCCO)OCCO)OCCO

InChI key

HMFKFHLTUCJZJO-UHFFFAOYSA-N

description

non-ionic

form

viscous liquid

mol wt

~1228

composition

lauric acid, ≥40% (balance primarily myristic, palmoyic, and stearic acids)

concentration

≥40.0%

technique(s)

cell culture | mammalian: suitable

refractive index

n20/D 1.468 (lit.)

CMC

0.06 mM (20-25°C)

transition temp

cloud point 76 °C

solubility

water: soluble (Water solubility: 0,0002 g/l at 20 °C - OECD Test Guideline 105)

density

1.095 g/mL at 25 °C (lit.)
1.1 g/cm3 at 25 °C (lit.)

HLB

16.7

application(s)

(ELISA and immunoassays)

Quality Level

300

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相关类别

Application

吐温20已可用于 原位 杂交的染色缓冲液中。在荧光共振共振能量转移(FRET)实验样品制备过程中，它也被用来防止蛋白质对盖玻片的非特异性吸附。
吐温20是一种广泛应用于生化领域的非离子去污剂。它被用作稳定的水包油乳液的乳化剂。吐温20已可用于膜的预提取，以去除周围蛋白(用于提取膜结合蛋白的比例为2%)。
吐温20在基于膜的免疫分析中已被用作一种封闭剂，其常用浓度为0.05%。吐温20可用于裂解哺乳动物细胞，使用浓度为0.005至0.5%。
非离子洗涤剂

Disclaimer

吐温20在高压灭菌下可能不稳定，特别是在含金属阳离子的缓冲溶液中。如果没有对性能的变化进行测试，则不建议使用高压灭菌。吐温20对热敏感，放置于升高的温度中其颜色会变深。据报道，聚山梨醇酯与碱、重金属盐、酚和单宁酸不相容。它们可能会降低许多防腐剂的活性。聚山梨醇酯水溶液在贮存过程中发生自氧化反应，光、温度升高和硫酸铜催化其变化。

General description

吐温20是聚氧乙烯山梨醇酯，属于聚山梨醇家族。这是一种分子量为1225道尔顿的非离子洗涤剂，认为其含20个环氧乙烷单位、1个山梨醇和1个月桂酸为主要脂肪酸。环氧乙烷亚基提供了表面活性剂的亲水性，而碳氢化合物链提供疏水环境。山梨醇形成连接环氧乙烷聚合物的骨架环。

Preparation Note

吐温20可混溶于水（100mg/mL），得到透明的黄色溶液。它也可以与酒精，二恶烷，乙酸乙酯混溶。吐温20不溶于液体石蜡和固定油脂。

Legal Information

TWEEN is a registered trademark of Croda International PLC

存储类别

10 - Combustible liquids

wgk

WGK 1

flash_point_f

527.0 °F - Pensky-Martens closed cup

flash_point_c

275 °C - Pensky-Martens closed cup

ppe

Eyeshields, Gloves

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCN7870
WXBF6726V
MKCX5519
BCCM9255
WXBF5138V

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Enoch Ming Wei Ng et al.
The Review of scientific instruments, 87(11), 115107-115107 (2016-12-03)
A method to measure the contact angle, which is indicative of wetting, using small liquid volumes dispensed directly on microplate wells is described and demonstrated. Experiments with enhanced green protein samples of volumes 4.4-6 μl showed no measured variance in
Adverse morphological development in embryonic zebrafish exposed to environmental concentrations of contaminants individually and in mixture.
Kinch CD, et al.
Aquatic Toxicology (Amsterdam, Netherlands), 175, 286-298 (2016)
Conformations of a metastable SH3 domain characterized by smFRET and an excluded-volume polymer model.
Mazouchi A, et al.
Biophysical Journal, 110(7), 1510-1522 (2016)
Jeffrey Wimsatt et al.
BMC cancer, 16(1), 942-942 (2016-12-09)
Colorectal cancer is the second most common cause of cancer deaths for both men and women, and the third most common cause of cancer in the U.S. Toxicity of current chemotherapeutic agents for colorectal cancer, and emergence of drug resistance
Cassandra D Kinch et al.
Aquatic toxicology (Amsterdam, Netherlands), 175, 286-298 (2016-04-24)
Exposure to environmental contaminants has been linked to developmental and reproductive abnormalities leading to infertility, spontaneous abortion, reduced number of offspring, and metabolic disorders. In addition, there is evidence linking environmental contaminants and endocrine disruption to abnormal developmental rate, defects
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Product Information Sheet - P2287

Product Information Sheet

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