1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane

Name: 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane
Brand: Vaqora Chemicals
SKU: VQ-050802

About 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane

Listed under CAS 18420-09-2, 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane is an organosilicon compound available from Vaqora Chemicals. Its molecular formula is C8H22O3Si2 and its molecular weight is 222.43 g/mol. Systematically, it is named ethoxy-[ethoxy(dimethyl)silyl]oxy-dimethylsilane. It is also known as Disiloxane, 1,3-diethoxy-1,1,3,3-tetramethyl or Disiloxane, 1,3-diethoxy-1,1,3,3-tetramethyl-.

Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

It is commonly used for organic synthesis and API synthesis. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 100 mg, 250 mg, 1 g and 5 g packs, 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane is dispatched with a Certificate of Analysis (COA) to destinations worldwide. SDS and detailed specification sheets can be requested with your quotation.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane
Catalogue No.	VQ-050802
CAS Number	18420-09-2
IUPAC name	ethoxy-[ethoxy(dimethyl)silyl]oxy-dimethylsilane
Molecular formula	C₈H₂₂O₃Si₂
Molecular weight	222.43 g/mol
Exact mass	222.1107
InChIKey	NPOYZXWZANURMM-UHFFFAOYSA-N
SMILES	CCO[Si](C)(C)O[Si](C)(C)OCC
PubChem CID	87635

Physical properties
Physical form	Other
H-bond donors / acceptors	0 / 3
TPSA	27.7 Å²
Synonyms	Disiloxane, 1,3-diethoxy-1,1,3,3-tetramethyl, Disiloxane, 1,3-diethoxy-1,1,3,3-tetramethyl-, Tetramethyl-1,3-diethoxy disiloxane, 1,1,3,3-Tetramethyl-1,3-diethoxydisiloxane, 4,4,6,6-tetramethyl-3,5,7-trioxa-4,6-disilanonane, ethoxy-[ethoxy(dimethyl)silyl]oxy-dimethyl-silane, Polysiloxanes, di-Me, ethoxy-terminated, 1,1,3,3-tetramethyl-1,3-diethoxy disiloxane

Safety & hazard information (GHS)

Flammable

Harmful / irritant

Signal word: Warning

Hazard statements

H226Flammable liquid and vapor
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P210, P233, P240, P241, P242, P243, P261, P264, P264 + P265, P271, P280, P302 + P352, P303 + P361 + P353, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P370 + P378, P403 + P233, P403 + P235, P405

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 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane?

The CAS Registry Number of 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane is 18420-09-2. It is also known as Disiloxane, 1,3-diethoxy-1,1,3,3-tetramethyl, Disiloxane, 1,3-diethoxy-1,1,3,3-tetramethyl-, Tetramethyl-1,3-diethoxy disiloxane.

What is the molecular formula and molecular weight of 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane?

1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane has the molecular formula C8H22O3Si2 and a molecular weight of 222.43 g/mol. Its IUPAC name is ethoxy-[ethoxy(dimethyl)silyl]oxy-dimethylsilane.

Which grade and pack sizes of 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane can I order?

We supply 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane, 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 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane?

Yes. Every lot of 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane 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 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane be shipped internationally?

Yes. 1,3-Diethoxy-1,1,3,3-tetramethyldisiloxane 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.