Decamethyl-1,9-Pentasiloxanediol

Name: Decamethyl-1,9-Pentasiloxanediol
Brand: Vaqora Chemicals
SKU: VQ-033860

About Decamethyl-1,9-Pentasiloxanediol

Decamethyl-1,9-Pentasiloxanediol (CAS 7445-36-5) is an impurity of Simethicone offered by Vaqora Chemicals. The compound has the formula C10H32O6Si5, corresponding to a molecular weight of 388.78 g/mol. The IUPAC name is bis[[[hydroxy(dimethyl)silyl]oxy-dimethylsilyl]oxy]-dimethylsilane. Common synonyms include Decamethylpentasiloxane-1,9-diol and 1,9-dihydroxydecamethyl-pentasiloxane.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

This Simethicone impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Decamethyl-1,9-Pentasiloxanediol in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Simethicone

View every impurity, metabolite and intermediate we list for Simethicone.

Simethicone impurities

Specifications & identifiers

Chemical identifiers
Product name	Decamethyl-1,9-Pentasiloxanediol
Catalogue No.	VQ-033860
CAS Number	7445-36-5
IUPAC name	bis[[[hydroxy(dimethyl)silyl]oxy-dimethylsilyl]oxy]-dimethylsilane
Molecular formula	C₁₀H₃₂O₆Si₅
Molecular weight	388.78 g/mol
Exact mass	388.1045
Grade	Reference Standard
HSN code	38229090
InChIKey	MHQYXFZBMMHEST-UHFFFAOYSA-N
SMILES	C[Si](C)(O)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O
PubChem CID	14251801

Physical properties
Physical form	Solid
H-bond donors / acceptors	2 / 6
TPSA	77.4 Å²
Synonyms	Decamethylpentasiloxane-1,9-diol, 1,9-Pentasiloxanediol, 1,1,3,3,5,5,7,7,9,9-decamethyl-, 1,9-dihydroxydecamethyl-pentasiloxane, 1,1,3,3,5,5,7,7,9,9-decamethylpentasiloxane-1,9-diol, bis[[[hydroxy(dimethyl)silyl]oxy-dimethyl-silyl]oxy]-dimethyl-silane

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, 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 Decamethyl-1,9-Pentasiloxanediol?

The CAS Registry Number of Decamethyl-1,9-Pentasiloxanediol is 7445-36-5. It is also known as Decamethylpentasiloxane-1,9-diol, 1,9-Pentasiloxanediol, 1,1,3,3,5,5,7,7,9,9-decamethyl-, 1,9-dihydroxydecamethyl-pentasiloxane.

What is the molecular formula and molecular weight of Decamethyl-1,9-Pentasiloxanediol?

Decamethyl-1,9-Pentasiloxanediol has the molecular formula C10H32O6Si5 and a molecular weight of 388.78 g/mol. Its IUPAC name is bis[[[hydroxy(dimethyl)silyl]oxy-dimethylsilyl]oxy]-dimethylsilane.

What is Decamethyl-1,9-Pentasiloxanediol used for?

Decamethyl-1,9-Pentasiloxanediol is supplied as a characterised reference material related to Simethicone. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Decamethyl-1,9-Pentasiloxanediol can I order?

We supply Decamethyl-1,9-Pentasiloxanediol in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Decamethyl-1,9-Pentasiloxanediol?

Yes. Every lot of Decamethyl-1,9-Pentasiloxanediol 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 Decamethyl-1,9-Pentasiloxanediol be shipped internationally?

Yes. Decamethyl-1,9-Pentasiloxanediol 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.