7789-66-4

Synonym:Silicon tetrabromide

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Section 2: Composition and Information on Ingredients
IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL)
Title Compound7789-66-4100%no datano data

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Section 3: Hazards Identification
Extremely destructive to tissue of the respiratory tract, eyes and skin. Material hydrolyzes in contact with
Emergency Overview:
moisture releasing corrosive hydrogen bromide fumes.
Primary Routes of Exposure:Ingestion, inhalation, skin, eyes
Eye Contact:Liquid and vapors will cause burns to the eyes and blindness.
Skin Contact:Corrosive to skin. Contact can lead to redness, pain, blistering, ulceration, and scar formation.
Inhalation of choking fumes will result in burns to the respiratory tract, chemical pneumonitis and pulmonary
Inhalation:
edema.
Ingestion:Ingestion is unlikely due to pungent choking odor. Causes burns to the gastrointestinal system.
May be harmful if swallowed, inhaled or absorbed through the skin. Material is extremely destructive to tissue
Acute Health Affects:
of the mucous membranes and upper respiratory tract, eyes and skin.
Chronic Health Affects:No information available on long-term chronic effects.
NTP:No
IARC:No
OSHA:No

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SECTION 4: First Aid Measures
Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
Eye Exposure:
assistance in keeping their eye lids open. Get immediate medical attention.
Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
Skin Exposure:
irritation persists.
Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
Inhalation:
in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
Ingestion:
vomiting only if directed by medical personnel.

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SECTION 5: Fire Fighting Measures
Flash Point:not applicable
Autoignition Temperature:none
Explosion Limits:none
Extinguishing Medium:none required
If involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure self-contained
Special Fire Fighting Procedures:
breathing apparatus and full protective clothing.
Hazardous Combustion andIf involved in a fire this material may emit corrosive hydrogen bromide fumes.
Decomposion Products:
Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.

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SECTION 6: Accidental Release Measures
Small spills can be mixed with powdered sodium bicarbonate, lime, or calcium carbonate and swept up.
Spill and Leak Procedures:Spillage in areas not adequately ventilated may require an evacuation of area. Emergency response teams
will require self-contained breathing apparatus.

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SECTION 7: Handling and Storage
Store material in a tightly sealed bottle away from moisture. If possible, handle material in an efficient fume
Handling and Storage:
hood. Exposure to the atmosphere may lead to degradation of the product.

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SECTION 8: Exposure Controls and Personal Protection
Eye Protection:Always wear approved safety glasses when handling a chemical substance in the laboratory.
Skin Protection:Wear protective clothing and gloves. Consult with glove manufacturer to determinew proper type of glove.
Ventilation:If possible, handle the material in an efficient fume hood.
In the absence of adequate ventilation a respirator should be worn. The use of a respiratory requires a
Respirator:
Respirator Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation:If possible, handle the material in an efficient fume hood.
Additional Protection:Protective work clothing.

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SECTION 9: Physical and Chemical Properties
Color and Form:colorless liq.
Molecular Weight:347.72
Melting Point:5.4°
Boiling Point:154°C
Vapor Pressure:no data
Specific Gravity:2.772
Odor:Pungent odor.
Solubility in Water:reacts with water

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SECTION 10: Stability and Reactivity
Stability:moisture sensitive
Hazardous Polymerization:no hazardous polymerization
Conditions to Avoid:contact with moisture
Incompatibility:Water, alcohols, strong bases, and active metals.
Decomposition Products:with moisture: hydrogen bromide and hydrobromic acid.

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SECTION 11: Toxicological Information
RTECS Data:No information available in the RTECS files.
Carcinogenic Effects:no data
Mutagenic Effects:no data
Tetratogenic Effects:no data

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SECTION 12: Ecological Information
Ecological Information:No information available

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SECTION 13: Disposal Considerations
Disposal:Dispose of according to local, state and federal regulations.

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SECTION 14: Transportation
Shipping Name (CFR):Corrosive liquids, N.O.S.
Hazard Class (CFR):8
Additional Hazard Class (CFR):NA
Packaging Group (CFR):II
UN ID Number (CFR):UN# 1760
Shipping Name (IATA):Corrosive liquid, N.O.S.
Hazard Class (IATA):8
Additional Hazard Class (IATA):NA
Packaging Group (IATA):II
UN ID Number (IATA):UN# 1760

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SECTION 15: Regulatory Information
TSCA:Listed in the TSCA inventory.
SARA (Title 313):Title compound not listed.
Second Ingredient:none

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SECTION 16 - ADDITIONAL INFORMATION
N/A