Hexamethyl disiloxane, 98%

Name: Hexamethyl disiloxane, 98%
Brand: Vaqora Chemicals
SKU: VQ-011122

About Hexamethyl disiloxane, 98%

Hexamethyl disiloxane is an organosilicon compound carrying the CAS registry number 107-46-0, specified at ≥98% purity. The compound has the formula C6H18OSi2, corresponding to a molecular weight of 162.38 g/mol. The IUPAC name is trimethyl(trimethylsilyloxy)silane. It is also known as HMDS or Hexamethyldisiloxane.

The material typically appears as a clear colourless liquid. Literature values give a melting point of -59 °C. Keep containers tightly closed in a cool, well-ventilated area away from heat and ignition sources. It carries the GHS signal word “Danger” with 4 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for cosmetics and personal care and organic synthesis. It is used across pharmaceutical manufacturing, academic and industrial research and cosmetics and personal care.

We offer Hexamethyl disiloxane in 100 mL, 500 mL and 160 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Cosmetics & personal care
Organic synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Hexamethyl disiloxane, 98%
Catalogue No.	VQ-011122
CAS Number	107-46-0
IUPAC name	trimethyl(trimethylsilyloxy)silane
Molecular formula	C₆H₁₈OSi₂
Molecular weight	162.38 g/mol
Exact mass	162.0896
Purity / assay	≥98%
HSN code	29319090
InChIKey	UQEAIHBTYFGYIE-UHFFFAOYSA-N
SMILES	C[Si](C)(C)O[Si](C)(C)C
PubChem CID	24764

Physical properties
Physical form	Liquid
Appearance	Clear colourless liquid
Melting point	-59 °C
H-bond donors / acceptors	0 / 1
TPSA	9.2 Å²
UN number	UN 1993
Synonyms	HMDS, Hexamethyldisiloxane, Disiloxane, hexamethyl-, Oxybis(trimethylsilane), Bis(trimethylsilyl)ether, Belsil DM 0.65, Bis(trimethylsilyl)oxide, Bistrimethylsilyl ether, KF 96L, Silane, oxybis(trimethyl-, Dow corning 200, OS 10

Safety & hazard information (GHS)

Flammable

Environmental hazard

Signal word: Danger

Hazard statements

H225Highly flammable liquid and vapor
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H411Toxic to aquatic life with long lasting effects

Precautionary statements: P210, P233, P240, P241, P242, P243, P273, P280, P303 + P361 + P353, P370 + P378, P391, P403 + P235, P501

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 Hexamethyl disiloxane, 98%?

The CAS Registry Number of Hexamethyl disiloxane, 98% is 107-46-0. It is also known as HMDS, Hexamethyldisiloxane, Disiloxane, hexamethyl-.

What is the molecular formula and molecular weight of Hexamethyl disiloxane, 98%?

Hexamethyl disiloxane, 98% has the molecular formula C6H18OSi2 and a molecular weight of 162.38 g/mol. Its IUPAC name is trimethyl(trimethylsilyloxy)silane.

Which grade and pack sizes of Hexamethyl disiloxane, 98% can I order?

We supply Hexamethyl disiloxane, 98% in (≥98%) grade, in 100 mL, 500 mL, 160 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Hexamethyl disiloxane, 98%?

Yes. Every lot of Hexamethyl disiloxane, 98% 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 Hexamethyl disiloxane, 98% be shipped internationally?

Yes. Hexamethyl disiloxane, 98% is classified as hazardous (UN 1993), 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.