ELECTRONIC SPACE PRODUCTS INTERNATIONAL
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MATERIAL SAFETY DATA SHEET
I PRODUCT IDENTIFICATION
Trade Name: Calcium Silicide Synonym: Calcium Disilicide
Chemical Nature: Metal Silicide Formula: CaSi2
CAS #: 12013-56-8
II HAZARDOUS INGREDIENTS
Hazardous Components % OSHA/PEL ACGIH/TLV Sec. 302 Sec. 304 Sec. 313
Calcium Silicide 0-100 N/E N/E No No No
HMIS Ratings: Health: 3 Flammability: 3 Reactivity: 2 Protective Equipment: J: goggles, gloves, apron, respirator
III PHYSICAL DATA
Boiling Point (oC): N/E or N/A Melting Point: N/E or N/A
Solubility in H2O: Insoluble in cold, decomposes in hot Specific Gravity: 2.5 g/cc
Vapor Density: N/E or N/A Vapor Pressure: N/E or N/A
Appearance and Odor: Black/brown pieces and powder, repulsive odor. % Volatiles: N/E or N/A
IV FIRE AND EXPLOSION HAZARDS DATA
Flash Point (Method Used): N/E or N/A Autoignition Temperature: N/E or N/A
Explosive Limits: Lower: N/E Upper: N/E
Extinguishing Media: DO NOT USE WATER!! Use class D or other suitable metal extinguishing agent.
Special Fire Fighting Procedures: Wear a self-contained breathing apparatus and full protective clothing to prevent contact with skin and eyes.
Unusual Fire and Explosion Hazards: May ignite spontaneously in air. Calcium silicide reacts with acids to evolve self-igniting silane gas. On contact with water it forms hydrogen gas. Reacts violently with fluorine.
V HEALTH HAZARD INFORMATION
Effects of Exposure:
To the best of our knowledge the chemical, physical and toxicological properties of calcium silicide have not been thoroughly investigated and recorded.
Calcium compounds: The fumes evolved by burning calcium in air are composed of calcium oxide which is an irritant to the skin, eyes and mucous membrane. Generally speaking, calcium compounds should be considered toxic only when they contain toxic components or as calcium oxide or hydroxide. Calcium compounds are common air contaminants. (Sax, Dangerous Properties of Industrial Materials, eight edition.)
Inhalation: May cause irritation to the respiratory system, sneezing and coughing due to decomposition product Ca(OH)2.
Ingestion: Decomposition product Ca(OH)2 may cause burning sensation in mouth, chest and stomach. May cause irritation of the mouth, pain in swallowing and stomach cramps.
Skin: May cause irritation on contact with moist skin.
Eye: May cause irritation.
Chronic Effects: Inhalation: Prolonged or heavy exposure may cause chemical bronchitis. No other chronic health effects recorded.
Medical Conditions Generally Aggravated by Exposure: Pre-existing respiratory disorders.
Carcinogenicity: NTP: No IARC: No OSHA: No
EMERGENCY AND FIRST AID PROCEDURES:
INHALATION: Remove victim to fresh air; give oxygen if breathing is difficult. Seek medical attention.
INGESTION: If conscious, administer 1-2 glasses of milk or water. DO NOT induce vomiting. Seek medical attention immediately.
SKIN: Brush material off skin and wash area with soap and water. Seek medical attention.
EYE: Flush eyes with lukewarm water for at least 15 minutes and seek medical attention.
VI REACTIVITY DATA
Conditions to Avoid: None
Incompatibility (Materials to Avoid): Acids, covalent halides, halogens, boron, fluorine and water.
Hazardous Decomposition Products: Ca(OH)2, hydrogen and silane gas.
Hazardous Polymerization: Will not occur
VII SPILL OR LEAK PROCEDURES
Steps to Be Taken in Case Material Is Released or Spilled: Wear a self-contained breathing apparatus and full protective clothing. Isolate the area where the spill occurred, insure proper ventilation is available and that water/moisture are kept out of the area. Vacuum up the spill using a high efficiency unit and place in a container for proper disposal. Use non-sparking tools. Take care not to raise dust.
Waste Disposal Method: Dispose of in accordance with Local, State and Federal Waste Disposal Regulations.
VIII SPECIAL PROTECTION INFORMATION
Respiratory Protection (Specify Type): Wear a NIOSH-approved respirator.
Ventilation: Use process enclosures, local exhaust ventilation, or other engineering controls to control airborne levels below recommended exposure limits. Handle in an inert gas such as argon, in a dry, controlled atmosphere. General exhaust is not recommended.
Protective Gloves: Rubber gloves
Eye Protection: Safety goggles
Other Protective Equipment: Wear protective apparel to prevent contamination of skin and clothing.
IX SPECIAL PRECAUTIONS
Precautions to Be Taken in Handling and Storage: Calcium silicide may decompose with water and moisture. Handle and store in a controlled environment and inert atmosphere such as argon gas. Wash hands and face thoroughly after handling and before meals. Store in tightly closed containers, in a cool dry place. Store under dry inert atmosphere.
Work Practices: Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels. Handle in a dry, controlled area. Use good housekeeping and sanitation practices. Do not use tobacco or food in work area. Wash thoroughly before eating and smoking.
DOT Class: Not classified
UN Number: 1325
IMCO Class: 4.3
Other: Flammable, dangerous when wet
The above information is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide. ESPI shall not be held liable for any damage resulting from handling or from contact with the above product.
Issued by: S. Dierks
Date: May 2002