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8.22184

Sigma-Aldrich

TWEEN ® 20

for synthesis

别名:

Montanox 20, 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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50 ML
$57.70

$57.70

预计发货时间2025年4月01日详情

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50 ML
$57.70

About This Item

CAS号:
9005-64-5
MDL编号:
MFCD00165986
UNSPSC代码:
12352104
EC索引号:
500-018-3
NACRES:
NA.22

$57.70

预计发货时间2025年4月01日详情

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蒸汽压

<1.4 hPa ( 20 °C)

质量水平

200

表单

liquid

效能

38900 mg/kg LD50, oral (Rat)

分子量

~1228

折射率

n20/D 1.468 (lit.)

pH值（酸碱度）

6-8 (20 °C, 50 g/L in H2O)

转变温度

flash point 275 °C

密度

1.095 g/mL at 25 °C (lit.)

储存温度

2-30°C

SMILES字符串

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

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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一般描述

Tween®-20是基于聚山梨酯的非离子表面活性剂。它由三种化学单位组成：
  • 脂肪族酯链，可阻碍生物分子非特异性相互作用
  • 脂肪链，可非共价吸附于疏水表面
  • 亲水末端羟基，可以针对潜在应用进行化学修饰。[1]

应用

Tween®-20可以作为结构导向剂，用于制备介孔氧化膜，因为它能够促进膜的纹理性能，如可控结晶度、膜形态、定制孔结构、高BET表面积和可控膜厚度。[1][2]它也用于合成AuNPs/TWEEN/GO复合材料，其中Tween®-20作为AuNP（Au纳米颗粒）的还原和固定剂以及GO（氧化石墨烯）的稳定剂。[3]
Tween®-20也可以在各种液体配方中用作乳化、增溶和润湿剂。[4][5][6]
非离子洗涤剂

分析说明

密度（d 20 °C/4 °C）：1.095 - 1.105
羟值：96 - 108
皂化值：40 - 50
鉴别（IR）：符合检验
由于其特定的熔程，产物可以是固体、液体、固化熔体或过冷熔体。

法律信息

TWEEN is a registered trademark of Croda International PLC

储存分类代码

10 - Combustible liquids

WGK

WGK 1

闪点(°F)

527.0 °F - Pensky-Martens closed cup

闪点(°C)

275 °C - Pensky-Martens closed cup

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Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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