Tetrachlorosilane 10026-04-7 MSDS
Name: Silicon tetrachloride Material Safety Data Sheet
Synonym: Silicon (IV) chloride; Tetrachlorosilane
CAS: 10026-04-7
Section 1 - Chemical Product   MSDS Name:Silicon tetrachloride Material Safety Data Sheet
Synonym:Silicon (IV) chloride; Tetrachlorosilane

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
10026-04-7 Silicon tetrachloride >99.5 233-054-0
Hazard Symbols: XI
Risk Phrases: 14 36/37/38

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Reacts violently with water. Irritating to eyes, respiratory system and skin.Water-reactive.
Potential Health Effects
Eye:
Causes severe eye irritation and possible 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. May cause corrosion and permanent tissue destruction of the esophagus and digestive tract. May be harmful if swallowed.
Inhalation:
Causes respiratory tract irritation. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. May cause central nervous system effects.
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.
Skin:
Get medical aid. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Wash clothing before reuse.
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.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.

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. Water Reactive. Material will react with water and may release a flammable and/or toxic gas. Substance is noncombustible. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Contact with water forms corrosive vapors.
Extinguishing Media:
Use extinguishing media most appropriate for the surrounding fire.
DO NOT USE WATER!

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. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Provide ventilation. Do not expose spill to water.

Section 7 - HANDLING and STORAGE
  Handling:
Keep container tightly closed. Do not get on skin or in eyes. Avoid ingestion and inhalation. Do not ingest or inhale. Do not allow contact with water. Use only in a chemical fume hood. Wash clothing before reuse.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Keep under a nitrogen blanket.

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# 10026-04-7: United Kingdom, WEL - TWA: (listed as silica, amorphous): 6 mg/m3 (inhalable dust); 2.4 mg/m3 TWA (respirable dust) United Kingdom, WEL - STEL: (listed as silica, amorphous): 18 mg/ STEL (inhalable dust); 7.2 mg/m3 STEL (respirable dust) Russia: (listed as silica, amorphous): 1 mg/m3 TWA Personal Protective Equipment Eyes: Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear a chemical apron.
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: Clear liquid
Color: colorless
Odor: suffocating odor - stench
pH: Not available.
Vapor Pressure: 259 mbar @ 20 deg C
Viscosity: Not available.
Boiling Point: 58 deg C @ 760mmHg
Freezing/Melting Point: -70 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: reacts (forming silicic acid and HCl)
Specific Gravity/Density: 1.480
Molecular Formula: Cl4Si
Molecular Weight: 169.9

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures. Reacts with water to form Silicic acid and Hydrogen chloride, a toxic and corrosive gas.
Generally chlorosilanes are considered non-corrosive in their natural, dry state, but become corrosive when in contact with water or moisture.
Conditions to Avoid:
High temperatures, incompatible materials, exposure to moist air or water.
Incompatibilities with Other Materials:
Metals, strong oxidizing agents, strong acids, strong bases, alcohols, amines, ammonia, dimethyl sulfoxide, glass, potassium, dimethyl formamide, sodium, aldehydes (e.g. acetaldehyde, acrolein, chloral, formaldehyde), esters (e.g. butyl acetate, ethyl acetate, propyl formate), ketones (e.g. acetone, acetophenone, MEK, MIBK).
Hazardous Decomposition Products:
Hydrogen chloride, carbon monoxide, carbon dioxide, oxides of silicon.
Hazardous Polymerization: Will not occur.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 10026-04-7: VW0525000 LD50/LC50:
CAS# 10026-04-7: Draize test, rabbit, eye: 20 mg/24H Moderate; Draize test, rabbit, skin: 500 mg/24H Severe; Inhalation, rat: LC50 = 8000 ppm/4H.
Carcinogenicity:
Silicon tetrachloride - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Other No information available.

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: SILICON TETRACHLORIDE
Hazard Class: 8
UN Number: 1818
Packing Group: II
IMO
Shipping Name: SILICON TETRACHLORIDE
Hazard Class: 8
UN Number: 1818
Packing Group: II
RID/ADR
Shipping Name: SILICON TETRACHLORIDE
Hazard Class: 8
UN Number: 1818
Packing group: II

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI
Risk Phrases:
R 14 Reacts violently with water.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
Safety Phrases:
S 7/8 Keep container tightly closed and dry.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
WGK (Water Danger/Protection)
CAS# 10026-04-7: 1
Canada
CAS# 10026-04-7 is listed on Canada's DSL List.
CAS# 10026-04-7 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 10026-04-7 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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