Skip to Content
Merck
All Photos(1)

Documents

Safety Information

40140

Sigma-Aldrich

Dichlorodimethylsilane

≥98.5% (GC)

Synonym(s):

DMDCS, Dimethyldichlorosilane

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
(CH3)2SiCl2
CAS Number:
75-78-5
Molecular Weight:
129.06
Beilstein:
605287
EC Number:
200-901-0
MDL number:
MFCD00000491
UNSPSC Code:
12352103
PubChem Substance ID:
57649927
NACRES:
NA.22

Assay

≥98.5% (GC)

form

liquid

refractive index

n20/D 1.404 (lit.)

bp

70 °C (lit.)

mp

−76 °C (lit.)

density

1.07 g/mL at 25 °C (lit.)

SMILES string

C[Si](C)(Cl)Cl

InChI

1S/C2H6Cl2Si/c1-5(2,3)4/h1-2H3

InChI key

LIKFHECYJZWXFJ-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Application

Dichlorodimethylsilane (DDMS) can be used as a silylating agent for the silylation of Pd/SiO2 catalysts to enhance the catalytic activity for the selective hydrogenation of aromatic ketones.
It is also employed as a reagent in the synthesis of hydrophilic and hydrophobic silica nanoparticles and amides from unprotected amino acids.

Other Notes

Silylating agent for diols, diamines, etc.; the protection is very sensitive to hydrolysis

Signal Word

Danger

Hazard Statements

H225,H302,H314,H331,H335

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1A - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

33.8 °F - closed cup

Flash Point(C)

1 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 4: Flammable liquids
Type 1 petroleums
Hazardous rank II
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

40140-VAR:
40140-BULK:
40140-100ML:
40140-25ML:
40140-500ML:
40140-6X100ML:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

L.W. Jenneskens et al.
Journal of the Chemical Society. Perkin Transactions 1, 2119-2119 (1985)
S.D. Pastor et al.
The Journal of Organic Chemistry, 49, 1297-1297 (1984)
Water-repellent acylated and silylated wood samples and their surface analytical characterization
Mohammed-Ziegler I, et al.
Colloids and Surfaces. A, Physicochemical and Engineering Aspects, 319(1-3), 204-212 (2008)
Synthesis of amides from unprotected amino acids by a simultaneous protection-activation strategy using dichlorodialkyl silanes
Van Leeuwen SH, et al.
Tetrahedron Letters, 43(50), 9203-9207 (2002)
Tuning the support adsorption properties of Pd/SiO2 by silylation to improve the selective hydrogenation of aromatic ketones
Quintanilla A, et al.
J. Catal., 257(1), 55-63 (2008)
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service