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202339

Sigma-Aldrich

聚(丙二醇)

average Mn ~2,000

别名:

PPG, 聚环氧丙烷

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About This Item

线性分子式:
H[OCH(CH3)CH2]nOH
CAS号:
25322-69-4
MDL编号:
MFCD00084446
UNSPSC代码:
12162002
PubChem化学物质编号:
24852056
NACRES:
NA.23
蒸汽压:
<0.01 mmHg ( 20 °C)
价格与库存信息目前不能提供

蒸汽密度

>1 (vs air)

质量水平

200

蒸汽压

<0.01 mmHg ( 20 °C)

分子量

average Mn ~2,000

包含

130-190 ppm proprietary phenolic antioxidant

折射率

n20/D 1.451

粘度

300 cSt(25 °C)(lit.)

羟基值

56 mg KOH/g

密度

1.005 g/mL at 25 °C

SMILES字符串

CC(O)CO

InChI

1S/C6H14O3/c1-5(8)4-9-6(2)3-7/h5-8H,3-4H2,1-2H3

InChI key

DUFKCOQISQKSAV-UHFFFAOYSA-N

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相关类别

一般描述

聚丙二醇(PPG)是一种聚醚。由环氧丙烯通过开环聚合而成。聚丙二醇毒性较低，可用作皮革涂饰材料的分散剂，也用作表面活性剂、湿润剂，用于药物制剂。

应用

聚丙二醇的用途如下：
  • 作为软钢在酸性溶液中的缓蚀剂。
  • 作为起始材料，通过前端聚合(frontal polymerization)合成环氧树脂/聚氨酯杂化网络。
也可用于制备聚(PEG/PPG/PTMC urethane)水凝胶，用于阿霉素(DOX)的缓释。

储存分类代码

10 - Combustible liquids

WGK

WGK 1

闪点(°F)

445.0 °F - closed cup

闪点(°C)

229.44 °C - closed cup

个人防护装备

Eyeshields, Gloves

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCM5746
BCCK6778
BCCH4979
BCCJ7828
BCCG9746

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There are various arguments and models connecting the characteristic length associated with the boson peak vibrations ξ to the length scale of dynamical heterogeneity L(het). ξ is usually defined as the ratio of the transverse sound velocity to the boson
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In spite of extensive studies conducted on carbon nanotubes and silicate layers for their polymer-based nanocomposites, the rise of graphene now provides a more promising candidate due to its exceptionally high mechanical performance and electrical and thermal conductivities. The present
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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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