MATERIAL SAFETY DATA SHEET
I. PRODUCT IDENTIFICATION
Manufacturer/Supplier:
ESPI Metals
1050 Benson Way, Ashland, OR 97520
Toll Free (800) 638-2581 * Fax (541) 488-8313
E-Mail: sales@espimetals.com
Trade Name: Silicon
Chemical Family: Non-metal
Molecular Formula: Si
CAS #: 7440-21-3
II. HAZARDOUS INGREDIENTS
Hazardous Component: Silicon
%: 0-100
OSHA/PEL: 15 mg/m3
ACGIH/TLV: 10 mg/m3
Other: 5 mg/m3 resp
HMIS Ratings: Health: 1 Flammability: 0 Reactivity: 0 Protective Equipment: E: glasses, gloves, dust respirator.
III. PHYSICAL DATA
Boiling Point: 2355 - 2600 oC
Freezing/Melting Point: 1410 - 1420 oC
Specific Gravity (H2O=1):2.33 gm/cc
Evaporation Rate: N/A
Vapor Density (air=1): N/A
Vapor Pressure: 1 mm at 1724 oC
% Volatiles by Volume: N/E or N/A
Solubility in H2O: Insoluble
Appearance and Odor: Steel gray pieces or dark brown powder, odorless
IV. FIRE AND EXPLOSION HAZARDS DATA
Flash Point (Method Used): N/A
Autoignition Temperature: No Data
Flammable Limits: Upper: N/A Lower: N/A
Extinguishing Media: FLAMMABLE SOLID IN POWDERED FORM. If involved in fire, do not use water, CO2, or halogenated extinguishing agents. Use dry chemical extinguishing agents, dry sand or dry ground dolomite.
Special Fire Fighting Procedures: Use normal procedures which include wearing NIOSH/MSHA approved self-contained breathing apparatus, flame and chemical resistant clothing; hats, boots and gloves. If without risk, remove material from the fire area. Cool container with water from maximum distance. Fumes from fire are hazardous. Isolate runoff to prevent environmental pollution.
Unusual Fire and Explosion Hazard: Elemental silicon is flammable when exposed to flame or by chemical reaction with oxidizing agents. May have a violent reaction with alkali carbonates; oxidants; (Al+PbO); Ca; CsC2; CaF2; F2; IF3; MnF3; Rb2C2; FNO; AgF; and NaK alloy. When heated it will react with water or steam to produce hydrogen gas.
V. HEALTH HAZARD INFORMATION
Effects of Exposure:
To the best of our knowledge the chemical, physical and toxicological properties of silicon have not been thoroughly investigated and recorded. Elemental silicon is an inert material that seems to have little adverse effect on lungs and does not appear to produce significant organic disease or toxic effects when exposures are kept under reasonable control.
Acute Effects:
Inhalation: May cause abrasive irritation.
Ingestion: No acute health effects recorded.
Skin: May cause abrasive irritation.
Eye: Dust and powder may cause abrasive irritation.
Chronic Effects: No chronic health effects recorded.
Target Organs: No target organs recorded.
Medical Conditions, If Any, Aggravated by the Chemical: Pre-existing respiratory disorders.
Carcinogenicity: NTP: No IARC: No OSHA: No
EMERGENCY AND FIRST AID PROCEDURES:
INHALATION: Remove victim to fresh air. Seek immediate medical attention.
INGESTION: No data available but one should obtain medical attention.
SKIN: Remove contaminated clothing, flood skin with a large amount of water. If irritation persists seek medical attention.
EYE: Immediately flush eyes, including under eyelids, with large amounts of water, for at least 15 minutes. Call a physician.
VI. REACTIVITY DATA
Stability: Stable
Conditions to Avoid: None
Incompatibility (Material to Avoid): Alkali carbonates, (Al+PbO), Ca, Cs2C2, Cl2, CoF2, F2, IF3, MnF3, Rb2C2, FNO, AgF, NaK alloy, water and steam.
Hazardous Decomposition Products: Hydrogen gas.
Hazardous Polymerization: Will not occur
VII. SPILL OR LEAK PROCEDURES
Steps to Be Taken in Case Material is Released or Spilled: Wear appropriate respiratory and protective equipment specified in section VIII. Isolate spill area and provide ventilation. Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for proper disposal. Take care not to raise dust.
Waste Disposal Method: In accordance with Local, State and Federal Waste Disposal Regulations.
VIII. SPECIAL PROTECTION INFORMATION
Respiratory Protection (Specify Type): NIOSH approved dust respirator.
Ventilation Requirements: Use local exhaust to maintain concentration at or below the PEL, TLV. Mechanical exhaust is recommended.
Protective Gloves: Rubber
Eye/Face Protection: Safety glasses.
Other Protective Equipment: Protective gear suitable to prevent contamination.
IX. SPECIAL PRECAUTIONS
Precautions to Be Taken in Handling and Storage: Store in a tightly closed container in a cool, dry, well-ventilated area. Wash thoroughly after handling.
Work Practices: Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels. Use good housekeeping and sanitation practices. Do not use tobacco or food in work area. Wash thoroughly before eating and smoking. Do not blow dust off clothing or skin with compressed air. Maintain eyewash capable of sustained flushing, safety drench shower and facilities for washing.
DOT Regulations:
Pellets, Pieces, Rod, Target:
Hazard Class: None
Powders:
Hazard Class: 4.1
Identification Number: UN3089
Packing Group: III
Proper Shipping Name: Metal powder, flammable, n.o.s. (silicon)
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 damages resulting from handling or from contact with the above product.
Issued by: S. Dierks
Date: December 2005