Chlorodimethylsilane

Description

Chlorodimethylsilane · CAS 1066-35-9 · C2H7ClSi. UNII XR7E4F5838. Boiling Point: 34.6 °C @760 [mm Hg]; Melting Point: -111 °C; Density: 0.852 @25 °C.

Identification

CAS Registry Number	1066-35-9
PubChem CID	66108
Molecular formula	C2H7ClSi
IUPAC name	chloro(dimethyl)silane
UNII (FDA)	XR7E4F5838

Computed Descriptors

Molecular Weight	94.61
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	94.0005545
Monoisotopic Mass	94.0005545
Topological Polar Surface Area	0
Heavy Atom Count	4
Formal Charge	0
Complexity	13.5

Physical & Chemical Properties

Boiling Point	34.6 °C @760 [mm Hg]
Melting Point	-111 °C
Density	0.852 @25 °C
Vapor Pressure	442.6 [mmHg]

Physical description & handling notes

• Dimethylchlorosilane appears as a colorless fuming liquid with a pungent, burning odor. Extremely corrosive to skin and respiratory tissues, both as a liquid and vapor. Vapors are heavier than air.
• Liquid
• Colorless fuming liquid with a pungent, burning odor; Bp = 35 deg C; [CAMEO]

Regulatory Status

GHS notification summary	0.2% (4 / 2413)

GHS Hazard Classification

GHS notification summary	0.2% (4 / 2413)
Reported hazard statements	H224 (98.8%), H261 (98.6%), H314 (99.4%), H331 (98.6%)

Documented Uses

• Toxic Gas from Spilling Chemical in Water [Category: Other]
• 2023: 2,500,000 - <4,000,000 lb
• 2022: 2,500,000 - <4,000,000 lb
• 2021: 5,500,000 - <7,000,000 lb
• 2020: 8,500,000 - <10,000,000 lb
• All Other Basic Inorganic Chemical Manufacturing

Synonyms

dimethylsilyl chloride; dimethylmonochlorosilane; RefChem:575834; DTXCID807355; 213-912-0; 1066-35-9; Chlorodimethylhydrosilane; Chlorodimethylsilane; Dimethylchlorohydrosilane; Dimethylchlorosilane; Dimethylhydrosilyl chloride; DTXSID0027355; Silane, chlorodimethyl-; XR7E4F5838; chloro(dimethyl)silane; Dimethylsilylchloride

Frequently Asked Questions

What are the CAS number and molecular formula of Chlorodimethylsilane?

CAS 1066-35-9; molecular formula C2H7ClSi; molecular weight — g/mol.

What other names is Chlorodimethylsilane known by?

dimethylsilyl chloride, dimethylmonochlorosilane, RefChem:575834, DTXCID807355, 213-912-0, 1066-35-9.

Is Chlorodimethylsilane classified as hazardous?

0.2% of GHS notifications report no hazard classification (4 of 2413).

What are the key physical properties of Chlorodimethylsilane?

Boiling Point: 34.6 °C @760 [mm Hg]; Melting Point: -111 °C; Density: 0.852 @25 °C; Vapor Pressure: 442.6 [mmHg].

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.