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Supelco

Dodecamethylcyclohexasiloxane

analytical standard

Synonym(s):

2,2,4,4,6,6,8,8,10,10,12,12-Dodecamethylcyclohexasiloxane

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About This Item

Empirical Formula (Hill Notation):
C12H36O6Si6
CAS Number:
540-97-6
Molecular Weight:
444.92
EC Number:
208-762-8
MDL number:
MFCD00144215
UNSPSC Code:
77101502
PubChem Substance ID:
329756321
NACRES:
NA.24
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grade

analytical standard

Quality Level

100

Assay

≥97.0% (GC)

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

application(s)

cleaning products
cosmetics
environmental
food and beverages
personal care

format

neat

SMILES string

[Si]1(O[Si](O[Si](O[Si](O[Si](O[Si](O1)(C)C)(C)C)(C)C)(C)C)(C)C)(C)C

InChI

1S/C12H36O6Si6/c1-19(2)13-20(3,4)15-22(7,8)17-24(11,12)18-23(9,10)16-21(5,6)14-19/h1-12H3

InChI key

IUMSDRXLFWAGNT-UHFFFAOYSA-N

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General description

Dodecamethylcyclohexasiloxane belonging to the class of cyclic volatile methylsiloxanes is identified as a potent environmental contaminant, most prominently found in biota, biosolid samples, soil, sediment samples, wastewaters, etc.[1] These compounds are used as fragrance carriers or solvents in household products, personal care products, cleaning agents and as precursors in the manufacture of silicone polymers.[2]

Application

Dodecamethylcyclohexasiloxane may be used as an analytical reference standard for the quantification of the analyte in the following:
  • Silicone emulsions using gas chromatography with flame ionization detection (GC-FID).[3]
  • Biota[2] and wastewater samples[1] using gas chromatography coupled to mass spectrometry (GC-MS).

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

195.8 °F - closed cup

Flash Point(C)

91 °C - closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL2248
BCCG8045
BCCG6833
BCCC0280
BCBV5993

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A practical gas chromatography flame ionization detection method for the determination of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane in silicone emulsions
Kierkegaard A, et al.
Analytical Chemistry, 82(22), 9573-9578 (2010)
A practical gas chromatography flame ionization detection method for the determination of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane in silicone emulsions
Brothers MH, et al.
Journal of Chromatography A, 144, 116-125 (2016)
Determination of cyclic and linear siloxanes in wastewater samples by ultrasound-assisted dispersive liquid?liquid microextraction followed by gas chromatography?mass spectrometry
Cortada C, et al.
Talanta, 120, 191-197 (2014)

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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