1,1,1,3,5,5,5-Heptamethyltrisiloxane

CAS 1873-88-7C7H22O2Si3MW 222.50

1,1,1,3,5,5,5-Heptamethyltrisiloxane (CAS 1873-88-7) — formula C7H22O2Si3, molecular weight 222.50.

Product Overview

CAS Number	1873-88-7
Molecular Formula	C7H22O2Si3
Molecular Weight	222.50

Technical Profile

What this product is

1,1,1,3,5,5,5-Heptamethyltrisiloxane is a chemical compound with CAS registry number 1873-88-7 and molecular formula C7H22O2Si3 (molecular weight 222.50).

Identification

CAS number: 1873-88-7

Its molecular formula C7H22O2Si3 comprises 7 C, 22 H, 2 O, 3 Si atoms.

Also known as: 1,1,1,3,5,5,5-Heptamethyltrisiloxane · Bis(trimethylsiloxy)methylsilane · Heptamethyltrisiloxane

Frequently Asked Questions

What is the CAS number of 1,1,1,3,5,5,5-Heptamethyltrisiloxane?

The CAS registry number of 1,1,1,3,5,5,5-Heptamethyltrisiloxane is 1873-88-7.

What is the molecular formula and molecular weight of 1,1,1,3,5,5,5-Heptamethyltrisiloxane?

Molecular formula C7H22O2Si3, molecular weight 222.50.

What other names is 1,1,1,3,5,5,5-Heptamethyltrisiloxane known by?

It is also registered under: 1,1,1,3,5,5,5-Heptamethyltrisiloxane, Bis(trimethylsiloxy)methylsilane, Heptamethyltrisiloxane.

PubChem Public Data

Independent reference data for 1,1,1,3,5,5,5-Heptamethyltrisiloxane (CAS 1873-88-7), compiled from public chemistry databases.

Registry identifiers across databases

CAS Registry Number	1873-88-7
PubChem CID	74640
Molecular formula	C7H22O2Si3
IUPAC name	trimethyl-[methyl(trimethylsilyloxy)silyl]oxysilane
UNII (FDA)	NS00046548

Computed descriptors

Molecular Weight	222.50
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	4
Exact Mass	222.09275954
Monoisotopic Mass	222.09275954
Topological Polar Surface Area	18.5
Heavy Atom Count	12

Synonyms and trade names

trimethyl-[methyl(trimethylsilyloxy)silyl]oxysilane; C7H22O2Si3; 1,1,1,3,5,5,5-heptamethyl trisiloxane; SCHEMBL41518; HMS-991; HMS-992; HMS-993; 1,1,1,3,5,5,5-heptamethyl-trisiloxane; NS00046548; H11921; S02350; 1,1,1,3,5,5,5-Heptamethyltrisiloxane, 97%; F985918; trimethyl-[methyl(trimethylsilyloxy)silyl]oxy-silane; Q27288310; Polymethylhydrosiloxanes, trimethlysiloxy terminated 15-25cSt

What the public record says

Heptamethyltrisiloxane · CAS 1873-88-7 · C7H22O2Si3. UNII NS00046548.

Source: PubChem / Wikidata; the batch COA governs where values differ.