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文件

181978

Sigma-Aldrich

聚乙烯亚胺 溶液

average Mn ~60,000 by GPC, average Mw ~750,000 by LS, 50 wt. % in H2O

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别名:
PEI, 乙烯亚胺聚合物 溶液
CAS号:
9002-98-6
PubChem化学物质编号:
24850967
NACRES:
NA.23

蒸汽压

9 mmHg ( 20 °C)

分子量

average Mn ~60,000 by GPC
average Mw ~750,000 by LS

浓度

50 wt. % in H2O

InChI

1S/C2H5N/c1-2-3-1/h3H,1-2H2

InChI key

NOWKCMXCCJGMRR-UHFFFAOYSA-N

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相关类别

应用

洗涤剂、粘合剂、水处理、油墨、染料、化妆品和造纸业、助粘剂、层压底漆、固色剂、絮凝剂、阳离子分散剂、稳定增强剂、表面活性剂、螯合剂以及醛类和氧化物清除剂。
蛋白质沉淀剂。

外形

支化聚合物

象形图

Exclamation markEnvironment
GHS07,GHS09

警示用语：

Warning

危险分类

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Sens. 1

储存分类代码

10 - Combustible liquids

WGK

WGK 2

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

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  4. Product 181978, Poly(ethyleneimine) solution, is listed as a solution but it is sold by weight; is this a solid or a liquid?

    This product is a solution of Poly(ethyleneimine) in water. However, this product, like many Sigma-Aldrich products, is weighed into the bottle. If 5 grams of this solution is purchased, approximately 4.62mL will be received.

  5. What possible impurities are present in Product 181978, Poly(ethyleneimine) solution?

    Although Sigma-Aldrich does not currently test for the impurities in this product, 2-aminoethanol and less than 50 ppb of unreacted monomer may be present as a result of the manufacturing process.

  6. I see two molecular weight values reported for Product 181978, Poly(ethyleneimine) solution. Which one is correct?

    Both of the approximate molecular weights listed for this product are correct based on the testing methods used by Sigma-Aldrich. However, each molecular weight is determined by a different method. The Mn refers to the number-average molecular weight (determined by GPC) while the Mw refers to the weight-average molecular weight (determined by Light Scattering). These two numbers are different but still related. The polydispersity is the measure of uniformity of the molecules in a polymer sample. A ratio of the weight-average molecular and the number-average molecular weight indicates how uniform the polymer sample is. The greater the ratio the less uniform the polymer molecules.

  7. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

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Andrew Jajack et al.
PloS one, 14(1), e0210286-e0210286 (2019-01-17)
Insurmountable detection challenges will impede the development of many of the next-generation of lab-on-a-chip devices (e.g., point-of-care and real-time health monitors). Here we present the first membrane-based, microfluidic sample preconcentration method that is continuous, quantifiable, simple, and capable of working
Xinyue Yuan et al.
Nature communications, 11(1), 4854-4854 (2020-09-27)
Chronic imaging of neuronal networks in vitro has provided fundamental insights into mechanisms underlying neuronal function. Current labeling and optical imaging methods, however, cannot be used for continuous and long-term recordings of the dynamics and evolution of neuronal networks, as
Laura R H Ip et al.
Oncotarget, 6(12), 10548-10562 (2015-04-15)
Treatment options for ovarian cancer patients remain limited and overall survival is less than 50% despite recent clinical advances. The lipid phosphatase inositol polyphosphate 4-phosphatase type II (INPP4B) has been described as a tumor suppressor in the PI3K/Akt pathway with

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