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Merck
CN

40140

Dichlorodimethylsilane

≥98.5% (GC)

Synonym(s):

DMDCS, Dimethyldichlorosilane

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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

Key Documents

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Quality Level

200

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

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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 Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCN3106
BCCF6667
BCBW5826
BCBQ9480V
BCBH8051V

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Dichlorodimethylsilane mediated one-step synthesis of hydrophilic and hydrophobic silica nanoparticles
Ebrahimi F, et al.
Advanced Powder Technology, 28(3), 932-937 (2017)
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)
J. Heberle et al.
Silylating Agents, 2nd ed. (1995)
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