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Merck

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
UNSPSC Code:
12352103
NACRES:
NA.22
PubChem Substance ID:
57649927
EC Number:
200-901-0
Beilstein/REAXYS Number:
605287
MDL number:
MFCD00000491
Assay:
≥98.5% (GC)
Form:
liquid

Key Documents

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InChI key

LIKFHECYJZWXFJ-UHFFFAOYSA-N

InChI

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

SMILES string

C[Si](C)(Cl)Cl

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.)

Quality Level

200

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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

signalword

Danger

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

3 - Flammable liquids

wgk

WGK 1

flash_point_f

33.8 °F - closed cup

flash_point_c

1 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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.

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

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

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

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Certificates of Analysis (COA)

Lot/Batch Number
BCCF6667
BCBW5826
BCBQ9480V
BCBH8051V
BCBC2267V

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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)
Dichlorodimethylsilane mediated one-step synthesis of hydrophilic and hydrophobic silica nanoparticles
Ebrahimi F, et al.
Advanced Powder Technology, 28(3), 932-937 (2017)
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)
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