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8.21881

Sigma-Aldrich

聚乙二醇

10000, for synthesis

别名:

聚（乙二醇）, PEG

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$99.40
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预计发货时间2025年4月11日详情

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1 KG
$99.40
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About This Item

线性分子式:
H(OCH2CH2)nOH
CAS号:
25322-68-3
MDL编号:
MFCD00081839
UNSPSC代码:
13111021
EC索引号:
500-038-2
NACRES:
NA.22

$99.40

预计发货时间2025年4月11日详情

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蒸汽压

<0.01 hPa ( 20 °C)

质量水平

200

表单

liquid

自燃温度

340 °C

效能

28000 mg/kg LD50, oral (Rat)
>20000 mg/kg LD50, skin (Rabbit)

pH值（酸碱度）

5-7 (20 °C, 100 g/L in H2O)

运动粘度

500-900 cSt(20 °C)

mp

58-63 °C

转变温度

flash point 265 °C

密度

1.2 g/cm3 at 20 °C

堆积密度

400‑500 kg/m3

储存温度

no temp limit

SMILES字符串

C(CO)O

InChI

1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2

InChI key

LYCAIKOWRPUZTN-UHFFFAOYSA-N

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一般描述

聚乙二醇（PEG）是一种合成、亲水、生物相容性聚合物，广泛应用于聚乙二醇化、表面偶联、纳米颗粒涂层和水凝胶交联。PEG是环氧乙烷通过开环反应聚合而成，由此产生了各种分子量和分子量分布（多分散性）。

应用

聚乙二醇10000可作为表面活性剂，用于在六亚甲基四胺（HMT）存在的情况下通过水热法合成Ni12P5中空微球。PEG 10000 显著改善高质量中空微球的形成，没有这种表面活性剂物质的形态将是近球状颗粒。[1]
它也可用作：
  • 作为反应物用于合成 N-PEG化噻唑盐，其可用作安息香缩合的有机催化剂。[2]
  • 作为非离子分散剂用于通过共沉淀法制备Nd2Si2O7 陶瓷色素。[3]

分析说明

熔程（下限值）： ≥ 59 °C
熔程（上限值）： ≤ 64 °C
羟值：9 - 12
平均分子量：9000 - 12500
同一性（IR）：通过测试

储存分类代码

10 - Combustible liquids

WGK

WGK 1

闪点(°F)

281.5 °F - closed cup

闪点(°C)

138.6 °C - closed cup

分析证书(COA)

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其他客户在看

Slide 1 of 1

1 of 1

聚（乙二醇） analytical standard, for GPC, 12,000

Supelco

81296

聚（乙二醇）

N-PEGylated Thiazolium Salt: A Green and Reusable Homogenous Organocatalyst for the Synthesis of Benzoins and Acyloins
Haghighi AJ, et al.
Catalysis Letters, 151(6) (2021)
Effects of precipitant and surfactant on co-precipitation synthesis of Nd2Si2O7 ceramic pigment
Ke Shanjun, et al.
Dyes and Pigments, 118 (2015)
Jun Li et al.
Journal of colloid and interface science, 332(1), 231-236 (2009-01-16)
In this paper, we report the successful synthesis of Ni(12)P(5) hollow spheres via a facile hydrothermal route, employing white phosphorus (WP) and nickel nitrate as the reactants in the presence of hexamethylenetetramine (HMT) and polyethylene glycol 10000 (PEG-10000). The phase

Questions

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  1. 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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  2. 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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