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吐温20

    
CP

Tween 20

源叶
S15016 一键复制产品信息
9005-64-5
MFCD00165986
吐混20;聚氧乙烯山梨糖醇酐单月桂酸酯;聚乙氧基月桂酸清凉茶醇;聚氧乙烯失水山梨醇月桂酸酯;聚氧乙烯山梨醇酐月桂酸酯;乳化剂T-20
货号 规格 价格 上海 北京 珠海 重庆 武汉 购买数量
S15016-100ml
CP

¥20.00

>10 - 1 >10 -
S15016-500ml
CP

¥50.00

>10 - 1 7 -
S15016-500ml*20
CP

¥900.00

货期:2-3天 - - - -
产品介绍 参考文献(33篇) 质检证书(COA) 摩尔浓度计算器 相关产品

产品介绍

用途:非离子型表面活性剂。水溶性乳化剂。气相色谱固定液。分离分析挥发油、脂肪酸酯、醇、铜、卤化物。
吐温-20(Tween-20),又称聚山梨酯-20(Polysorbate-20),一种来源于山梨聚糖类酯的吐温类非离子型表面活性剂,易混溶于水,广泛应用于生物化学研究中,包括1)一种乳化剂用以制备稳定的油包水型乳状液,尤其是用在制药业;2)膜结合蛋白提取实验中,常以2%浓度去除膜周边蛋白;3)基于膜检测的免疫学实验中,常以0.05%的浓度用作一种封闭剂;4)还可以0.005~0.5%的浓度用于裂解哺乳动物细胞。
注意事项
1)本品不建议高压灭菌,建议用0.22μm滤膜过滤除菌。滤膜除菌前可能需要微热Tween-20到40°C,且用热水替换部分Tween-20。
2)为了您的安全和健康,请穿实验服并戴一次性手套操作。
吐温(或聚山梨酯)为非离子型表面活性剂,是山梨醇与不同高级脂肪酸所形成的酯。有异臭、微苦。一般呈淡黄色到琥珀色粘稠液体状,但因分子量差异而有所不同。酸碱度:约6-8(5%)
根据不同高级脂肪酸所形成的酯,吐温分20,40,60,80等多种,根据不同的需要来选用。常用的有吐温20(Tween-20)、吐温21((Tween -21)、吐温40((Tween -40)、吐温60((Tween -60)、吐温61(T(Tween -61)、吐温80(T(Tween 80)、吐温81(Tween -81)、吐温85((Tween -85) 。
吐温60是硬脂酸酯;吐温 80为油酸酯;吐温20为月桂酸酯,是聚氧乙烯去水山梨醇单月桂酸酯和一部分聚氧乙烯双去水山梨醇单月桂酸酯的混合物
主要应用为:
1. Tween 和同类型的Triton 100(聚乙二醇辛基苯基醚)非离子型去污剂可以在生物学实验中乳化蛋白,不破坏蛋白的结构,可减少对蛋白质之间原有的相互作用的破坏。离子型去污剂如SDS则破坏蛋白的结构。
2. 在生物学实验中作封闭剂,封闭所有未结合位点而不替换膜上的靶蛋白、不结合靶蛋白的标位、也不与抗体或检测试剂有交叉反应。Tween-20有复性抗原的作用,可提高特异性的识别能力。在做western blot时,用惰性蛋白质或非离子去污剂封闭膜上的未结合位点,可以降低抗体的非特异性结合。最常见的封闭剂是BSA、脱脂奶粉、酪蛋白、明胶和Tween-20(0.05 – 0.1%)稀溶液。
3.常作为水包油(O/W)型乳化剂,使其他物质均匀在溶液中分散,主要用于农药、食品、化妆品。相对来说,吐温20更温和一些,吐温80的乳化性更强一些。

沸点: 100℃
外观: 亮黄色液体
溶解性: Souble  in  DMSO
敏感性: 易吸潮
储存条件: RT
用途: 本品仅供科研,不得用于其它用途。
注意: 部分产品我司仅能提供部分信息,我司不保证所提供信息的权威性,仅供客户参考交流研究之用。

参考文献(33篇)

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