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427772

Sigma-Aldrich

聚乙烯

average Mw ~4,000 by GPC, average Mn ~1,700 by GPC

别名:

PE

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250 G
$125.00
1 KG
$240.00

$125.00

国内现货，预计发货时间2025年4月21日详情

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250 G
$125.00
1 KG
$240.00

About This Item

线性分子式:
H(CH2CH2)nH
CAS号:
9002-88-4
MDL编号:
MFCD00084423
UNSPSC代码:
12162002
PubChem化学物质编号:
24866779
NACRES:
NA.23

$125.00

国内现货，预计发货时间2025年4月21日详情

获取大包装报价

表单

powder

质量水平

100

分子量

average Mn ~1,700 by GPC
average Mw ~4,000 by GPC

粘度

1.5 poise(25 °C, Brookfield Thermosel)(lit.)

mp

92 °C

酸值

<0.05 mg KOH/g

转变温度

softening point 106 °C (ring and ball)

密度

0.92 g/mL at 25 °C

SMILES字符串

C=C

InChI

1S/C2H4/c1-2/h1-2H2

InChI key

VGGSQFUCUMXWEO-UHFFFAOYSA-N

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相关类别

应用

脱模添加剂是橡胶加工过程的润滑剂、PVC的挤出和压延助剂以及颜色母料的分散助剂。PEG-4000可用作蛋白质分级和病毒沉淀过程中的沉淀剂。[1]不同分子量的PEG对哺乳动物细胞杂交的影响。[2]

特点和优势

低分子量，低粘度，易于加工。

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
MKCW2074
MKCT6767
MKCT5408
MKCP9612
MKCQ9709

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高密度聚乙烯 United States Pharmacopeia (USP) Reference Standard

USP

1546707

高密度聚乙烯

OCTACHLORO-1,3-PENTADIENE AldrichCPR

S893676

OCTACHLORO-1,3-PENTADIENE

低密度聚乙烯 United States Pharmacopeia (USP) Reference Standard

USP

1546809

低密度聚乙烯

聚乙烯 Ultra-high molecular weight, surface-modified, powder, 125&#160;&#956;m avg. part. size

Sigma-Aldrich

434264

聚乙烯

聚丙烯 Isotactic, average Mw ~250,000, average Mn ~67,000

Sigma-Aldrich

427888

聚丙烯

A method for the estimation of polyethylene glycol in plasma protein fractions, Analytical Biochemistry
Sims GEC and Snape TJ
Analytical Biochemistry, 107(1), 60-63 (1980)
Reduced cortical neurotransmitPolyethylene glycol-induced mammalian cell hybridization: Effect of polyethylene glycol molecular weight and concentration.
Davidson RL, et al.
Somatic Cell Genetics, 2(3), 271-280 (1976)
Lisa K McCarthy et al.
Pediatrics, 132(1), e135-e141 (2013-06-19)
Hypothermia on admission to the NICU is associated with increased mortality in preterm infants. Many newborns are hypothermic on admission despite using polyethylene bags (PBs). Using exothermic mattresses (EMs) in addition to PBs may reduce hypothermia but increase hyperthermia. We
Frederick J Kummer et al.
Journal of long-term effects of medical implants, 22(2), 177-179 (2013-02-23)
A polyethylene cup explanted after 41 years was examined using several analytical techniques to determine whether there was a material cause for the extremely low wear observed. Neither the amount of polyethylene oxidation nor crystallinity appeared to be a factor.
Melody Yee-Man Wong et al.
Rapid communications in mass spectrometry : RCM, 27(6), 713-721 (2013-02-19)
Despite various porous materials having been widely adopted as spraying tips for direct sample analysis using electrospray ionization mass spectrometry (ESI-MS), the effect of surface property and porosity of spraying tip materials on their analytical performances is not clear. Investigation
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Questions

1–3 of 3 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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  3. May I know the average particle size of this product?

    1 answer

    1. The exact particle size has not been determined. However, 99.5% to 100% of the powder passes through an 18 mesh screen (18 mesh = 1.0 mm).

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