**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 75-78-5 |Dichlorodimethylsilane | 99% | 200-901-0 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: F C
Risk Phrases: 12 36/37/38
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Extremely flammable. Irritating to eyes, respiratory system and
skin.Corrosive.Lachrymator (substance which increases the flow of
tears).Water-reactive.
Potential Health Effects
Eye:
Causes eye burns. Lachrymator (substance which increases the flow
of tears).
Skin:
Causes skin burns.
Ingestion:
May cause severe gastrointestinal tract irritation with nausea,
vomiting and possible burns. May be harmful if swallowed.
Inhalation:
May cause irritation of the respiratory tract with burning pain in
the nose and throat, coughing, wheezing, shortness of breath and
pulmonary edema. Causes chemical burns to the respiratory tract.
Inhalation may be fatal as a result of spasm, inflammation, edema of
the larynx and bronchi, chemical pneumonitis and pulmonary edema.
Chronic:
No information found.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid
immediately.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of
water for at least 15 minutes while removing contaminated clothing
and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4
cupfuls of milk or water. Never give anything by mouth to an
unconscious person. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh
air immediately. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen.
Notes to Physician:
Support cardiovascular and respiratory function.
**** SECTION 5 - FIRE FIGHTING MEASURES ****
General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. Vapors can travel to a source of ignition and flash
back. During a fire, irritating and highly toxic gases may be
generated by thermal decomposition or combustion. Reacts violently
with water. Vapors may be heavier than air. They can spread along
the ground and collect in low or confined areas. Contact with metals
may evolve flammable hydrogen gas.
Extinguishing Media:
DO NOT USE WATER! Do NOT get water inside containers. For large
fires, use water spray, fog or alcohol-resistant foam. For small
fires, use carbon dioxide, dry chemical, dry sand, or
alcohol-resistant foam. Cool containers with flooding quantities of
water until well after fire is out.
**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****
General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. Clean up spills immediately,
observing precautions in the Protective Equipment section. Scoop up
with a nonsparking tool, then place into a suitable container for
disposal. Remove all sources of ignition. Do not expose spill to
water. Do not get water inside containers.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Use only in a well-ventilated area. Use
spark-proof tools and explosion proof equipment. Do not get in eyes,
on skin, or on clothing. Empty containers retain product residue,
(liquid and/or vapor), and can be dangerous. Take precautionary
measures against static discharges. Do not ingest or inhale. Do not
allow contact with water. Use only in a chemical fume hood. Do not
pressurize, cut, weld, braze, solder, drill, grind, or expose empty
containers to heat, sparks or open flames.
Storage:
Keep away from sources of ignition. Store in a cool, dry place. Keep
refrigerated. (Store below 4C/39F.) Store in a tightly closed
container. Keep under a nitrogen blanket. Flammables-area. Do not
store in metal containers.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Use process enclosure, local exhaust ventilation, or other
engineering controls to control airborne levels below recommended
exposure limits. Facilities storing or utilizing this material should
be equipped with an eyewash facility and a safety shower.
Exposure Limits
CAS# 75-78-5:
Personal Protective Equipment
Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear a chemical apron. Wear appropriate protective
clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Liquid
Color: clear, colorless
Odor: Pungent odor.
pH: Not available.
Vapor Pressure: 135 mm Hg @ 25 C
Viscosity: Not available.
Boiling Point: 70 deg C
Freezing/Melting Point: -16 deg C
Autoignition Temperature: 460 deg C ( 860.00 deg F)
Flash Point: -9 deg C ( 15.80 deg F)
Explosion Limits, lower: 5.5
Explosion Limits, upper: 10.4
Decomposition Temperature: Not available.
Solubility in water: Reacts with water.
Specific Gravity/Density: 1.064
Molecular Formula: C2H6Cl2Si
Molecular Weight: 129.0335
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
High temperatures, mechanical shock, incompatible materials, ignition
sources, metals, exposure to moist air or water.
Incompatibilities with Other Materials:
Acids, alcohols, amines, strong bases, esters, ketones, aldehydes,
acetone, ammonia, and strong oxidizing agents. Reacts violently with
water to liberate an acidic gas which in contact with metal surfaces
can generate flammable or explosive hydrogen gas.
Hazardous Decomposition Products:
Hydrogen chloride, chlorine, phosgene, carbon monoxide, irritating
and toxic fumes and gases, carbon dioxide, silicon dioxide.
Hazardous Polymerization: Has not been reported
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 75-78-5: VV3150000
LD50/LC50:
CAS# 75-78-5: Draize test, rabbit, eye: 5 mg/24H Severe; Draize
test, rabbit, skin: 20 mg/24H Moderate; Inhalation, mouse: LC50 =
300 mg/m3/2H; Inhalation, rat: LC50 = 930 ppm/4H; Oral, rat: LD50 =
5660 uL/kg.
Oral, rat: LD50 =
Carcinogenicity:
Dichlorodimethylsilane -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
Ecotoxicity:
Water danger/protection: WGK 1
Aquatic toxicity range Tlm 96-100
ppm.
Dichlorodimethylsilane is not expected to persist long enough
in the environment to bioconcentrate.
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Dispose of in a manner consistent with federal, state, and local regulations.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: DIMETHYLDICHLOROSILANE
Hazard Class: 3 (8)
UN Number: 1162
Packing Group: II
IMO
Shipping Name: DIMETHYLDICHLOROSILANE
Hazard Class: 3.2 (8)
UN Number: 1162
Packing Group: II
RID/ADR
Shipping Name: DIMETHYLDICHLOROSILANE
Hazard Class: 3
UN Number: 1162
Packing group: II
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: F C
Risk Phrases:
R 12 Extremely flammable.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 29 Do not empty into drains.
S 33 Take precautionary measures against static
discharges.
S 37/39 Wear suitable gloves and eye/face
protection.
WGK (Water Danger/Protection)
CAS# 75-78-5: No information available.
Canada
CAS# 75-78-5 is listed on Canada's DSL List.
CAS# 75-78-5 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 75-78-5 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 12/11/1997 Revision #2 Date: 3/18/2003
The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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