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181846

Poly(dimethylsiloxane)

analytical standard, average Mw 95,000 (Typical), average Mn 50,000 (Typical)

Synonym(s):

Dimethylpolysiloxane

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Size/SKUAvailabilityPrice
25 g

Estimated to ship TODAYfromMilliporeSigma Canada Ltd.

$440.00

About This Item

Linear Formula:
[Si(CH3)2O]n
CAS Number:
UNSPSC Code:
41116107
PubChem Substance ID:
NACRES:
NA.24
MDL number:
eCl@ss:
25140904

$440.00


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grade

analytical standard

Quality Segment

vapor pressure

5 mmHg ( 20 °C)

mol wt

average Mn 50,000 (Typical), average Mw 95,000 (Typical)

technique(s)

gel permeation chromatography (GPC): suitable

application(s)

cosmetics
food and beverages

format

neat

SMILES string

C[Si](C)=O

InChI

1S/C2H6OSi/c1-4(2)3/h1-2H3

InChI key

SEUDSDUUJXTXSV-UHFFFAOYSA-N

General description

Poly(dimethylsiloxane) [PDMS] is a polymer. It is a stable silicone rubber. It has been used as ion selective membrane for ion-sensitive field-effect transistors, as spring material in accelerometers, elastomer on a tactile sensor and as flexible encapsulation material in decouple sensors.
This substance is listed on the positive list of the EU regulation 10/2011 for plastics intended to come into contact with food.

Application

It was used in a study performed to understand its molecular weight and molecular weight distribution by off-line coupling of GPC with MALDI mass spectrometer.

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This Item
81153DMPS1M
description

analytical standard, average Mw 95,000 (Typical), average Mn 50,000 (Typical)

description

analytical standard, suitable for gel permeation chromatography (GPC), 311

description

viscosity 1,000 cSt (25 °C)(lit.)

grade

analytical standard

grade

analytical standard

grade

-

technique(s)

gel permeation chromatography (GPC): suitable

technique(s)

gel permeation chromatography (GPC): suitable

technique(s)

-

format

neat

format

neat

format

-

mol wt

average Mw 95,000 (Typical), average Mn 50,000 (Typical)

mol wt

Mn ~311, Mp ~311, Mw ~311

mol wt

~28,000

vapor pressure

5 mmHg ( 20 °C)

vapor pressure

5 mmHg ( 20 °C)

vapor pressure

-

Quality Level

100

Quality Level

100

Quality Level

100


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Storage Class

10 - Combustible liquids

WGK

WGK 1

Flash Point (°F)

214.0 °F - closed cup

Flash Point (°C)

101.1 °C - closed cup

PPE (personal protective equipment)

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)



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Questions

1–2 of 2 Questions  
  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/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  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

      Helpful?

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