SIGMA-ALDRICH
Material Safety Data Sheet
Date Printed: 14/APR/2005
Date Updated: 12/NOV/2004
Version 1.7
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 CHLOROTRIMETHYLSILANE, 97+%
Product Number C72854
Company Sigma-Aldrich Pty, Ltd
Unit 2, 14 Anella Avenue
Castle Hill NSW 1765
Australia
Technical Phone # +61 2 9841 0555
Fax +61 2 9841 0500
Emergency Phone # +61 2 9841 0566
2 - Composition/Information on Ingredients
Product Name CAS # EC no Annex I
Index Number
CHLOROTRIMETHYLSILANE 75-77-4 200-900-5 None
Formula C3H9ClSi
Molecular Weight 108.64 AMU
Synonyms Chlorotrimethylsilane * Silane, trimethylchloro-
* Silicane, chlorotrimethyl- * TL 1163 *
Trimethyl chlorosilane * Trimethylsilyl chloride
3 - Hazards Identification
SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Highly flammable. Reacts violently with water. Harmful by
inhalation and in contact with skin. Causes severe burns.
Irritating to respiratory system.
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): Flammable liquid. 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: Store under inert gas. Keep tightly
closed. Keep away from heat, sparks, and open flame.
SPECIAL REQUIREMENTS: 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.
GENERAL HYGIENE MEASURES
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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 56 - 57 掳C
MP/MP Range -40 掳C
Flash Point -18 掳C Method: closed cup
Flammability N/A
Autoignition Temp 400 掳C
Oxidizing Properties N/A
Explosive Properties N/A
Explosion Limits Lower: 2 %
Upper: 6.4 %
Vapor Pressure N/A
SG/Density 0.859 g/cm3
Partition Coefficient N/A
Viscosity N/A
Vapor Density 3.7 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.
Reactions to Avoid: Water hydrolyzes material liberating acidic
gas which in contact with metal surfaces can generate flammable
and/or explosive hydrogen gas.
Conditions to Avoid: Do not allow water to enter container because
of violent reaction.
Materials to Avoid: Strong acids, Strong bases, Strong oxidizing
agents.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Carbon monoxide, Carbon dioxide,
Silicon oxide, Formaldehyde, Silicon dioxide.
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur
11 - Toxicological Information
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RTECS NUMBER: VV2710000
ACUTE TOXICITY
LC50
Inhalation
Rat
12,900 mg/m3
1H
LD50
Oral
Rat
5660 UL/KG
Remarks: Behavioral:Somnolence (general depressed activity).
Lungs, Thorax, or Respiration:Dyspnea. Gastrointestinal:Other
changes.
LD50
Skin
Rabbit
1780 UL/KG
Remarks: Behavioral:Altered sleep time (including change in
righting reflex). Gastrointestinal:Hypermotility, diarrhea.
Nutritional and Gross Metabolic:Weight loss or decreased weight
gain.
IRRITATION DATA
Skin
Rabbit
Remarks: Severe irritation effect
Skin
Rabbit
0.5 ml
Remarks: Moderate irritation effect
Eyes
Rabbit
0.005 ml
Remarks: Moderate 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: Harmful if absorbed through skin.
Eye Contact: Causes burns.
Inhalation: Material is extremely destructive to the tissue of
the mucous membranes and upper respiratory tract. Harmful if
inhaled.
Ingestion: May be harmful if swallowed.
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TARGET ORGAN INFORMATION
Lungs. Nerves.
CHRONIC EXPOSURE - CARCINOGEN
Result: This material has not been classified by IARC, OSHA,
ACGIH, EPA, or NTP as to its carcinogenicity, however, some
studies have shown that this material may induce certain types
of cancers.
Mouse
Route of Application: Intraperitoneal
Exposure Time: I
Result: Tumorigenic:Neoplastic by RTECS criteria. Lungs, Thorax,
or Respiration:Tumors.
12 - Ecological Information
No data available.
13 - Disposal Considerations
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#: 1298
Class: 3
PG: II
Proper Shipping Name: Trimethylchlorosilane
IMDG
UN#: 1298
Class: 3
PG: II
Subrisk: 8
Proper Shipping Name: Trimethylchlorosilane
Marine Pollutant: No
Severe Marine Pollutant: No
IATA
UN#: 1298
Class: 3
PG: II
Subrisk: 8
Proper Shipping Name: Trimethylchlorosilane
Inhalation Packing Group I: No
15 - Regulatory Information
CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
INDICATION OF DANGER: F C
Highly Flammable. Corrosive.
R-PHRASES: 11 14 20/21 35 37
Highly flammable. Reacts violently with water. Harmful by
inhalation and in contact with skin. Causes severe burns.
Irritating to respiratory system.
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S-PHRASES: 16 26 36/37/39 45
Keep away from sources of ignition - no smoking. In case of
contact with eyes, rinse immediately with plenty of water and
seek medical advice. Wear suitable protective clothing, gloves,
and eye/face protection. In case of accident or if you feel
unwell, seek medical advice immediately (show the label where
possible).
COUNTRY SPECIFIC INFORMATION
Germany
WGK: 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
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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