Hexamethylcyclotrisiloxane

Name: Hexamethylcyclotrisiloxane
Brand: Vaqora Chemicals
SKU: VQ-039683

About Hexamethylcyclotrisiloxane

Hexamethylcyclotrisiloxane (CAS 541-05-9) is an organosilicon compound offered by Vaqora Chemicals. The compound has the formula C6H18O3Si3, corresponding to a molecular weight of 222.46 g/mol. Systematically, it is named 2,2,4,4,6,6-hexamethyl-1,3,5,2,4,6-trioxatrisilinane. Alternative names: Cyclotrisiloxane, hexamethyl- and Dimethylsiloxane cyclic trimer.

Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Key uses span organic synthesis and API synthesis. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Available in 100 mg, 250 mg, 1 g and 5 g packs, Hexamethylcyclotrisiloxane is dispatched with a Certificate of Analysis (COA) to destinations worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Hexamethylcyclotrisiloxane
Catalogue No.	VQ-039683
CAS Number	541-05-9
IUPAC name	2,2,4,4,6,6-hexamethyl-1,3,5,2,4,6-trioxatrisilinane
Molecular formula	C₆H₁₈O₃Si₃
Molecular weight	222.46 g/mol
Exact mass	222.0564
InChIKey	HTDJPCNNEPUOOQ-UHFFFAOYSA-N
SMILES	C[Si]1(O[Si](O[Si](O1)(C)C)(C)C)C
PubChem CID	10914

Physical properties
Physical form	Other
H-bond donors / acceptors	0 / 3
TPSA	27.7 Å²
Synonyms	Cyclotrisiloxane, hexamethyl-, Dimethylsiloxane cyclic trimer, SDK 10, DC 246, hexamethyl-1,3,5,2,4,6-trioxatrisilinane, Cyclotrisiloxane, 2,2,4,4,6,6-hexamethyl-, Hexamethylcyclotrisiloxane (NIST), 2,2,4,4,6,6-Hexamethyl-1,3,5,2,4,6-trioxatrisilinane #

Safety & hazard information (GHS)

Flammable

Signal word: Danger

Hazard statements

H228Flammable solid

Precautionary statements: P210, P240, P241, P280, P370 + P378

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Hexamethylcyclotrisiloxane?

The CAS Registry Number of Hexamethylcyclotrisiloxane is 541-05-9. It is also known as Cyclotrisiloxane, hexamethyl-, Dimethylsiloxane cyclic trimer, SDK 10.

What is the molecular formula and molecular weight of Hexamethylcyclotrisiloxane?

Hexamethylcyclotrisiloxane has the molecular formula C6H18O3Si3 and a molecular weight of 222.46 g/mol. Its IUPAC name is 2,2,4,4,6,6-hexamethyl-1,3,5,2,4,6-trioxatrisilinane.

Which grade and pack sizes of Hexamethylcyclotrisiloxane can I order?

We supply Hexamethylcyclotrisiloxane, in 100 mg, 250 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Hexamethylcyclotrisiloxane?

Yes. Every lot of Hexamethylcyclotrisiloxane is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Hexamethylcyclotrisiloxane be shipped internationally?

Yes. Hexamethylcyclotrisiloxane is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.