Name:
Trimethylchlorosilane
Synonym:
CSI; Trimethylchlorosilane; Trimethylsilyl chloride; Chlorotrimethylsilane
CAS:
75-77-4
Section 1 - Chemical Product
MSDS Name:Trimethylchlorosilane
Synonym:CSI; Trimethylchlorosilane; Trimethylsilyl chloride; Chlorotrimethylsilane
Synonym:CSI; Trimethylchlorosilane; Trimethylsilyl chloride; Chlorotrimethylsilane
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 75-77-4 | Trimethylchlorosilane | 100.0 | 200-900-5 |
| Hazard Symbols: F C Risk Phrases: 11 14 35 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Highly flammable. Reacts violently with water. Causes severe burns.Water-reactive.
Potential Health Effects
Eye:
Causes severe eye burns.
Skin:
Contact with skin causes irritation and possible burns, especially if the skin is wet or moist. May be harmful if absorbed through the skin.
Ingestion:
May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns.
Inhalation:
May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
Chronic:
Chronic exposure may cause effects similar to those of acute exposure.
Highly flammable. Reacts violently with water. Causes severe burns.Water-reactive.
Potential Health Effects
Eye:
Causes severe eye burns.
Skin:
Contact with skin causes irritation and possible burns, especially if the skin is wet or moist. May be harmful if absorbed through the skin.
Ingestion:
May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns.
Inhalation:
May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
Chronic:
Chronic exposure may cause effects similar to those of acute exposure.
Section 4 - FIRST AID MEASURES
Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
If swallowed, do NOT induce vomiting. Get medical aid immediately.
If victim is fully conscious, give a cupful of water. Never give anything by mouth to an unconscious person.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Skin:
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
If swallowed, do NOT induce vomiting. Get medical aid immediately.
If victim is fully conscious, give a cupful of water. Never give anything by mouth to an unconscious person.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
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. Use water spray to keep fire-exposed containers cool. Water Reactive. Extremely flammable liquid and vapor. Vapor may cause flash fire. Vapors are heavier than air and may travel to a source of ignition and flash back. Vapors can spread along the ground and collect in low or confined areas.
Extinguishing Media:
Use carbon dioxide or dry chemical. DO NOT USE WATER OR FOAM.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Water Reactive. Extremely flammable liquid and vapor. Vapor may cause flash fire. Vapors are heavier than air and may travel to a source of ignition and flash back. Vapors can spread along the ground and collect in low or confined areas.
Extinguishing Media:
Use carbon dioxide or dry chemical. DO NOT USE WATER OR FOAM.
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. Remove all sources of ignition.
Use a spark-proof tool. Provide ventilation. Do not get water on spilled substances or inside containers.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Remove all sources of ignition.
Use a spark-proof tool. Provide ventilation. Do not get water on spilled substances or inside containers.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Ground and bond containers when transferring material. 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. Do not ingest or inhale. Do not allow contact with water.
Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Use only with adequate ventilation. Keep away from heat, sparks and flame.
Storage:
Keep away from sources of ignition. Store in a cool, dry place.
Store in a tightly closed container. Keep away from water.
Flammables-area.
Wash thoroughly after handling. Ground and bond containers when transferring material. 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. Do not ingest or inhale. Do not allow contact with water.
Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Use only with adequate ventilation. Keep away from heat, sparks and flame.
Storage:
Keep away from sources of ignition. Store in a cool, dry place.
Store in a tightly closed container. Keep away from water.
Flammables-area.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 75-77-4: Personal Protective Equipment Eyes: Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
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.
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 75-77-4: Personal Protective Equipment Eyes: Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
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: sharp odor - irritating odor
pH: Not available.
Vapor Pressure: 234 mm Hg @ 25 deg C
Viscosity: Not available.
Boiling Point: 57 deg C @ 760 mm Hg
Freezing/Melting Point: -58 deg C
Autoignition Temperature: 743 deg F ( 395.00 deg C)
Flash Point: -18 deg F ( -27.78 deg C)
Explosion Limits, lower: 1.8 vol %
Explosion Limits, upper: 6.0 vol %
Decomposition Temperature:
Solubility in water: reacts
Specific Gravity/Density: .8500 g/cm3
Molecular Formula: C3H9ClSi
Molecular Weight: 108.64
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures. Reacts violently with water.
Conditions to Avoid:
Ignition sources.
Incompatibilities with Other Materials:
Water, hexafluoroisopropylideneamino lithium.
Hazardous Decomposition Products:
Hydrogen chloride, phosgene, carbon monoxide, carbon dioxide, silicon dioxide.
Hazardous Polymerization: Has not been reported
Stable under normal temperatures and pressures. Reacts violently with water.
Conditions to Avoid:
Ignition sources.
Incompatibilities with Other Materials:
Water, hexafluoroisopropylideneamino lithium.
Hazardous Decomposition Products:
Hydrogen chloride, phosgene, carbon monoxide, carbon dioxide, silicon dioxide.
Hazardous Polymerization: Has not been reported
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 75-77-4: VV2710000 LD50/LC50:
CAS# 75-77-4: Draize test, rabbit, eye: 5 uL Moderate; Draize test, rabbit, skin: 500 uL Moderate; Oral, rat: LD50 = 5660 uL/kg; Skin, rabbit: LD50 = 1780 uL/kg.
Carcinogenicity:
Trimethylchlorosilane - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 75-77-4: VV2710000 LD50/LC50:
CAS# 75-77-4: Draize test, rabbit, eye: 5 uL Moderate; Draize test, rabbit, skin: 500 uL Moderate; Oral, rat: LD50 = 5660 uL/kg; Skin, rabbit: LD50 = 1780 uL/kg.
Carcinogenicity:
Trimethylchlorosilane - 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 Salmonella typhimurium TA97, TA98, TA100, TA1535, TA1537 without metabolic activation positive.
Aquatic toxicity Tlm 96: 100-10 ppm.
Do not allow the product to reach the effluent drain. Do not introduce signifiant amounts into sewerage.
Prevent any contamination under ground water. Hydrolyses to hexamethyldisiloxane.
Water danger/protection: WGK 1 Salmonella typhimurium TA97, TA98, TA100, TA1535, TA1537 without metabolic activation positive.
Aquatic toxicity Tlm 96: 100-10 ppm.
Do not allow the product to reach the effluent drain. Do not introduce signifiant amounts into sewerage.
Prevent any contamination under ground water. Hydrolyses to hexamethyldisiloxane.
Section 13 - DISPOSAL CONSIDERATIONS
Products which are considered hazardous for supply are classified as Special Waste and the disposal of such chemicals is covered by regulations which may vary according to location. Contact a specialist disposal company or the local waste regulator for advice. Empty containers must be decontaminated before returning for recycling.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: TRIMETHYLCHLOROSILANE
Hazard Class: 3
UN Number: 1298
Packing Group: II
IMO
Shipping Name: TRIMETHYLCHLOROSILANE
Hazard Class: 3
UN Number: 1298
Packing Group: II
RID/ADR
Shipping Name: TRIMETHYLCHLOROSILANE
Hazard Class: 3
UN Number: 1298
Packing group: II
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: F C
Risk Phrases:
R 11 Highly flammable.
R 14 Reacts violently with water.
R 35 Causes severe burns.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 25 Avoid contact with eyes.
S 30 Never add water to this product.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 75-77-4: 1
Canada
CAS# 75-77-4 is listed on Canadas DSL List.
CAS# 75-77-4 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 75-77-4 is listed on the TSCA inventory.
