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469300

Sigma-Aldrich

Hexamethyldisiloxane

viscosity 0.65 cSt (25 °C)

Synonym(s):

Poly(dimethylsiloxane), HMDSO

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About This Item

Linear Formula:
(CH3)3SiOSi(CH3)3
CAS Number:
Molecular Weight:
162.38
Beilstein:
1736258
EC Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23
Pricing and availability is not currently available.

vapor density

>1 (vs air)

refractive index

n20/D 1.377 (lit.)

viscosity

0.65 cSt(25 °C)

bp

101 °C (lit.)

mp

−59 °C (lit.)

density

0.764 g/mL at 20 °C (lit.)

SMILES string

C[Si](C)(C)O[Si](C)(C)C

InChI

1S/C6H18OSi2/c1-8(2,3)7-9(4,5)6/h1-6H3

InChI key

UQEAIHBTYFGYIE-UHFFFAOYSA-N

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Application

  • Superhydrophobic Surface Coating: Studies the application of hexamethyldisiloxane coatings on fabric masks via plasma treatment to achieve superhydrophobic properties, enhancing the masks′ resistance to moisture (M Prado et al., 2022).
  • PECVD for Thin Film Coatings: Describes the use of hexamethyldisiloxane in plasma-enhanced chemical vapor deposition to create thin film coatings, exploring the effects of using extremely asymmetric capacitive RF discharge (Ž Gosar et al., 2020).
  • QCM-Based VOC Sensors: Hexamethyldisiloxane thin films are used as sensitive coatings for quartz crystal microbalance sensors, enhancing their capability to detect various volatile organic compounds (M Boutamine et al., 2014).
  • Hydrophobic-Hydrophilic Films: Explores the polymerization of hexamethyldisiloxane using atmospheric pressure plasma jets to create films with tailored hydrophobic and hydrophilic properties (M Bashir, S Bashir, 2015).

Pictograms

FlameEnvironment

Signal Word

Danger

Hazard Statements

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

21.2 °F - closed cup

Flash Point(C)

-6 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

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Jonathan N Thon et al.
Blood, 124(12), 1857-1867 (2015-01-22)
Platelet transfusions total >2.17 million apheresis-equivalent units per year in the United States and are derived entirely from human donors, despite clinically significant immunogenicity, associated risk of sepsis, and inventory shortages due to high demand and 5-day shelf life. To
Volker F Achterberg et al.
The Journal of investigative dermatology, 134(7), 1862-1872 (2014-03-29)
Changes in the mechanical properties of dermis occur during skin aging or tissue remodeling and affect the activity of resident fibroblasts. With the aim to establish elastic culture substrates that reproduce the variable softness of dermis, we determined Young's elastic
Edward W Tekwa et al.
Lab on a chip, 15(18), 3723-3729 (2015-08-01)
Localized interactions are predicted to favour the evolution of cooperation amongst individuals within a population. One important factor that can localize interactions is habitat patchiness. We hypothesize that habitats with greater patchiness (greater edge-to-area ratio) can facilitate the maintenance of
T F Holth et al.
Aquatic toxicology (Amsterdam, Netherlands), 154, 240-252 (2014-06-16)
The aim of this study was to characterize concentration- and time-dependent responses in juvenile Atlantic cod (Gadus morhua) following exposure for one and three weeks to the water-soluble fraction (WAF) of three weathered oils: Arabian Light crude oil (ALC), North
Richard Karban et al.
The New phytologist, 204(2), 380-385 (2014-06-13)
Volatile communication between sagebrush (Artemisia tridentata) individuals has been found previously to reduce herbivory and to be more effective between individuals that are genetically identical or related relative to between strangers. The chemical nature of the cues involved in volatile

Related Content

We offer PDMS surface modification kit which allows for durable hydrophilization of various polydimethylsiloxane (PDMS) surfaces.

We offer PDMS surface modification kit which allows for durable hydrophilization of various polydimethylsiloxane (PDMS) surfaces.

We offer PDMS surface modification kit which allows for durable hydrophilization of various polydimethylsiloxane (PDMS) surfaces.

We offer PDMS surface modification kit which allows for durable hydrophilization of various polydimethylsiloxane (PDMS) surfaces.

Questions

1–2 of 2 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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