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Organosilicon Compounds & Silanes

Heptamethyltrisiloxane

Available on request

Heptamethyltrisiloxane (CAS 1873-88-7) supplier Zemixal: C7H21O2Si3, COA and SDS with every lot, worldwide shipping. Catalogue no. ZX-043298.

Pack sizes
Heptamethyltrisiloxane chemical structure
CAS number1873-88-7
FormulaC7H21O2Si3
Molar mass221.5 g/mol
InChIKeySWGZAKPJNWCPRY-UHFFFAOYSA-N

About Heptamethyltrisiloxane

Researchers and plant chemists source Heptamethyltrisiloxane from Zemixal for routine and specialised work. Key data: CAS 1873-88-7, formula C7H21O2Si3 and molar mass 221.5 g/mol.

Common uses in the lab and plant

  • Organic synthesis
  • API synthesis

Handling and storage

Classified under GHS with signal word Danger and hazard statements H225, H226, H315 and H319. Read the SDS before first use.

Order it in 100 mg, 250 mg, 1 g and 5 g packs or ask for a bulk quotation. Every shipment includes a batch certificate of analysis and a 16-section SDS. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Typical uses

  • Organic synthesis
  • API synthesis

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of Heptamethyltrisiloxane
Product nameHeptamethyltrisiloxane
Catalogue numberZX-043298
CAS number1873-88-7
Molecular formulaC7H21O2Si3
Molar mass221.5 g/mol
Exact mass221.0849
H-bond donors / acceptors0 / 2
Topological polar surface area18.5 Ų
InChIKeySWGZAKPJNWCPRY-UHFFFAOYSA-N
SMILESC[Si](O[Si](C)(C)C)O[Si](C)(C)C
PubChem CID6327366
Synonyms1,1,1,3,5,5,5-Heptamethyltrisiloxane, Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-, Methylbis(trimethylsilyloxy)silane, Methylbis(trimethylsiloxy)silane, SIB-1844, Bis(trimethylsiloxy)methylsilane, methyl-bis(trimethylsilyloxy)silicon, HPTSO Heptamethyltrisiloxane, di(trimethylsiloxy)methylsilane, 1,1,1,3,5,5,5-heptamethyl-trisiloxan, Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-,

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS02 Flammable
Flammable
GHS07 Irritant or harmful
Irritant or harmful

Signal word Danger

  • H225Highly flammable liquid and vapor
  • 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 summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Heptamethyltrisiloxane
100 mgQuoted on request
250 mgQuoted on request
1 gQuoted on request
5 gQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Heptamethyltrisiloxane

Which CAS number identifies Heptamethyltrisiloxane?
Heptamethyltrisiloxane is registered under CAS 1873-88-7. You may also see it listed as 1,1,1,3,5,5,5-Heptamethyltrisiloxane, Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-, Methylbis(trimethylsilyloxy)silane. Our catalogue number for this item is ZX-043298.
What are the formula and molar mass of Heptamethyltrisiloxane?
For Heptamethyltrisiloxane, its formula is C7H21O2Si3 and its molar mass is 221.5 g/mol. InChIKey SWGZAKPJNWCPRY-UHFFFAOYSA-N lets you match it in any structure database.
What grade and pack sizes are available for Heptamethyltrisiloxane?
The grade and assay are confirmed on the quotation and the batch COA. Standard packs are 100 mg, 250 mg, 1 g, 5 g. Larger quantities and custom packing can be quoted on request.
Which documents come with Heptamethyltrisiloxane?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Heptamethyltrisiloxane to my country?
Yes. Because Heptamethyltrisiloxane is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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