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427772

Sigma-Aldrich

聚乙烯

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

同義詞:

PE

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About This Item

線性公式:
H(CH2CH2)nH
CAS號碼:
9002-88-4
MDL號碼:
MFCD00084423
分類程式碼代碼:
12162002
PubChem物質ID:
24866779
NACRES:
NA.23
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形狀

powder

分子量

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

黏度

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

mp

92 °C

酸值

<0.05 mg KOH/g

轉變溫度

softening point 106 °C (ring and ball)

密度

0.92 g/mL at 25 °C

SMILES 字串

C=C

InChI

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

InChI 密鑰

VGGSQFUCUMXWEO-UHFFFAOYSA-N

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相關類別

應用

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]

特點和優勢

低分子量，低粘度，易于加工。

儲存類別代碼

11 - Combustible Solids

水污染物質分類（WGK）

WGK 3

閃點（°F）

Not applicable

閃點（°C）

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)

從最近期的版本中選擇一個：

分析證明 (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
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
Agnieszka Karbownik et al.
Acta poloniae pharmaceutica, 70(2), 301-307 (2013-04-26)
The study concerned the stability of calcium folinate in concentrate in glass vials and diluted in polyethylene (PE) bags stored at 15-25 degrees C and 2-8 degrees C for up to 34 days. Original vials of calcium folinate injection (10
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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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