SIGMA-ALDRICH
Material Safety Data Sheet
Date Printed: 28/JUN/2005
Date Updated: 26/MAR/2004
Version 1.3
According to 91/155/EEC
Classified as Hazardous according to the criteria of EU Annex 1 and
NOHSC.
1 - Product and Company Information
Product Name DICHLORODIMETHYLSILANE, 99%
Product Number 440272
Company Sigma-Aldrich Pty. Ltd.
12 Anella Avenue
Castle Hill NSW 2154
Australia
Technical Phone # +61 2 9841 0555 (1800 800 097)
Fax +61 2 9841 0500 (1800 800 096)
Emergency Phone # +44 8701906777 (1800 448 465)
2 - Composition/Information on Ingredients
Product Name CAS # EC no Annex I
Index Number
DICHLORODIMETHYLSILANE 75-78-5 200-901-0 014-003-00-X
Formula C2H6Cl2Si
Molecular Weight 129.06 AMU
Synonyms Dichlorodimethylsilane * Dichlorodimethylsilicon
* Dimethyl-dichlorsilan (Czech) * Dimethylsilane
dichloride * Inerton AW-DMCS * LS 130 *
Repel-Silan
3 - Hazards Identification
SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Highly flammable. Irritating to eyes, respiratory system and skin.
4 - First Aid Measures
AFTER INHALATION
If inhaled, remove to fresh air. If not breathing give
artificial respiration. If breathing is difficult, give oxygen.
AFTER SKIN CONTACT
In case of skin contact, flush with copious amounts of water for
at least 15 minutes. Remove contaminated clothing and shoes.
Call a physician.
AFTER EYE CONTACT
In case of contact with eyes, flush with copious amounts of
water for at least 15 minutes. Assure adequate flushing by
separating the eyelids with fingers. Call a physician.
AFTER INGESTION
If swallowed, wash out mouth with water provided person is
conscious. Call a physician immediately. Do not induce vomiting.
5 - Fire Fighting Measures
CONDITIONS OF FLAMMABILITY
Water hydrolyzes material liberating acidic gas which in contact
with metal surfaces can generate flammable and/or explosive
hydrogen gas.
EXTINGUISHING MEDIA
Suitable: Carbon dioxide, dry chemical powder, or appropriate
foam.
Unsuitable: Do not use water.
SPECIAL RISKS
Specific Hazard(s): Extremely flammable. Emits toxic fumes under
fire conditions.
Explosion Hazards: Vapor may travel considerable distance to
source of ignition and flash back. Container explosion may occur
under fire conditions.
SPECIAL PROTECTIVE EQUIPMENT FOR FIREFIGHTERS
Wear self-contained breathing apparatus and protective clothing
to prevent contact with skin and eyes.
6 - Accidental Release Measures
PERSONAL PRECAUTION PROCEDURES TO BE FOLLOWED IN CASE OF LEAK OR SPILL
Evacuate area. Shut off all sources of ignition. Use nonsparking
tools.
PROCEDURE(S) OF PERSONAL PRECAUTION(S)
Wear self-contained breathing apparatus, rubber boots, and heavy
rubber gloves.
METHODS FOR CLEANING UP
Cover with dry-lime, sand, or soda ash. Place in covered
containers using non-sparking tools and transport outdoors.
Ventilate area and wash spill site after material pickup is
complete.
7 - Handling and Storage
HANDLING
Directions for Safe Handling: Do not breathe vapor. Do not get
in eyes, on skin, on clothing. Avoid prolonged or repeated
exposure.
STORAGE
Conditions of Storage: Keep tightly closed. Keep away from heat,
sparks, and open flame. Store under nitrogen.
Incompatible Materials: Do not allow contact with water
Store at 2-8掳C
SPECIAL REQUIREMENTS: Handle and store under inert gas.
8 - Exposure Controls / Personal Protection
ENGINEERING CONTROLS
Safety shower and eye bath. Use nonsparking tools. Use only in a
chemical fume hood.
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GENERAL HYGIENE MEASURES
Wash contaminated clothing before reuse. Discard contaminated
shoes. Wash thoroughly after handling.
PERSONAL PROTECTIVE EQUIPMENT
Respiratory Protection: Government approved respirator.
Hand Protection: Compatible chemical-resistant gloves.
Eye Protection: Chemical safety goggles.
Special Protective Measures: Faceshield (8-inch minimum).
9 - Physical and Chemical Properties
Appearance Physical State: Clear liquid
Color: Colorless
Property Value At Temperature or Pressure
pH N/A
BP/BP Range 70 掳C 760 mmHg
MP/MP Range -76 掳C
Flash Point -5 掳C Method: closed cup
Flammability N/A
Autoignition Temp N/A
Oxidizing Properties N/A
Explosive Properties N/A
Explosion Limits Lower: 5.5 %
Upper: 10.4 %
Vapor Pressure N/A
SG/Density 1.072 g/cm3
Partition Coefficient N/A
Viscosity N/A
Vapor Density 1.45 g/l
Saturated Vapor Conc. N/A
Evaporation Rate N/A
Bulk Density N/A
Decomposition Temp. N/A
Solvent Content N/A
Water Content N/A
Surface Tension N/A
Conductivity N/A
Miscellaneous Data N/A
Solubility N/A
10 - Stability and Reactivity
STABILITY
Stable: Stable.
Conditions to Avoid: Do not allow water to enter container because
of violent reaction.
Materials to Avoid: Alcohols, Amines, Strong bases.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Carbon monoxide, Carbon dioxide,
Silicon oxide, Hydrogen chloride gas.
Hazardous Decomposition Products Formed Upon Contact with Water:
Hydrogen chloride gas
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur
11 - Toxicological Information
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RTECS NUMBER: VV3150000
ACUTE TOXICITY
LD50
Oral
Rat
5660 UL/KG
Remarks: Behavioral:Somnolence (general depressed activity).
Lungs, Thorax, or Respiration:Dyspnea. Liver:Other changes.
LC50
Inhalation
Rat
930 ppm
4H
LC50
Inhalation
Mouse
300 mg/m3
2H
IRRITATION DATA
Skin
Rabbit
20 mg
24H
Remarks: Moderate irritation effect
Eyes
Rabbit
5 mg
24H
Remarks: Severe irritation effect
SIGNS AND SYMPTOMS OF EXPOSURE
Material is extremely destructive to tissue of the mucous
membranes and upper respiratory tract, eyes, and skin.
Inhalation may result in spasm, inflammation and edema of the
larynxand bronchi, chemical pneumonitis, and pulmonary edema.
Symptoms of exposure may include burning sensation, coughing,
wheezing, laryngitis, shortness of breath, headache, nausea, and
vomiting. To the best of our knowledge, the chemical, physical,
and toxicological properties have not been thoroughly
investigated.
ROUTE OF EXPOSURE
Skin Contact: Causes burns.
Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: Causes burns.
Inhalation: Material is extremely destructive to the tissue of
the mucous membranes and upper respiratory tract. Toxic if
inhaled.
Ingestion: May be harmful if swallowed.
12 - Ecological Information
No data available.
13 - Disposal Considerations
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SUBSTANCE DISPOSAL
Contact a licensed professional waste disposal service to dispose
of this material. Burn in a chemical incinerator equipped with an
afterburner and scrubber but exert extra care in igniting as this
material is highly flammable. Observe all federal, state, and
local environmental regulations.
14 - Transport Information
RID/ADR
UN#: 1162
Class: 3
PG: II
Proper Shipping Name: Dimethyldichlorosilane
IMDG
UN#: 1162
Class: 3
PG: II
Subrisk: 8
Proper Shipping Name: Dimethyldichlorosilane
Marine Pollutant: No
Severe Marine Pollutant: No
IATA
UN#: 1162
Class: 3
PG: II
Subrisk: 8
Proper Shipping Name: Dimethyldichlorosilane
Inhalation Packing Group I: No
15 - Regulatory Information
CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
ANNEX I INDEX NUMBER: 014-003-00-X
INDICATION OF DANGER: F Xi
Highly Flammable. Irritant.
R-PHRASES: 11 36/37/38
Highly flammable. Irritating to eyes, respiratory system and
skin.
COUNTRY SPECIFIC INFORMATION
Germany
WGK: 1
SWITZERLAND
SWISS POISON CLASS: 1
16 - Other Information
WARRANTY
The above information is believed to be correct but does not
purport to be all inclusive and shall be used only as a guide. The
information in this document is based on the present state of our
knowledge and is applicable to the product with regard to
appropriate safety precautions. It does not represent any
guarantee of the properties of the product. Sigma-Aldrich Inc.,
shall not be held liable for any damage resulting from handling or
from contact with the above product. See reverse side of invoice
ALDRICH - 440272 www.sigma-aldrich.com Page 5
or packing slip for additional terms and conditions of sale.
Copyright 2005 Sigma-Aldrich Co. License granted to make unlimited
paper copies for internal use only.
DISCLAIMER
For R&D use only. Not for drug, household or other uses.
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