Name:
Silicon Pieces 99.9999%
Synonym:
None
CAS:
7440-21-3
Section 1 - Chemical Product
MSDS Name:Silicon Pieces 99.9999%
Synonym:None
Synonym:None
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7440-21-3 | Silicon | 99.999 | 231-130-8 |
| Hazard Symbols: None Listed. Risk Phrases: None Listed. |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Moisture sensitive.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract.
Inhalation:
May cause respiratory tract irritation.
Chronic:
Not available.
Moisture sensitive.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract.
Inhalation:
May cause respiratory tract irritation.
Chronic:
Not available.
Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. 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 if cough or other symptoms appear.
Notes to Physician:
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. 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 if cough or other symptoms appear.
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. Dusts at sufficient concentrations can form explosive mixtures with air. Dousing metallic fires with water may generate hydrogen gas, an extremely dangerous explosion hazard.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam. Do NOT get water inside containers.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Dousing metallic fires with water may generate hydrogen gas, an extremely dangerous explosion hazard.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam. Do NOT get water inside containers.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Very fine particles can cause a fire or explosion.
Eliminate all ignition sources. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Very fine particles can cause a fire or explosion.
Eliminate all ignition sources. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Section 7 - HANDLING and STORAGE
Handling:
Minimize dust generation and accumulation. Avoid contact with skin and eyes. Avoid ingestion and inhalation. Do not allow contact with water. Use only in a chemical fume hood. Keep from contact with moist air and steam.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.
Minimize dust generation and accumulation. Avoid contact with skin and eyes. Avoid ingestion and inhalation. Do not allow contact with water. Use only in a chemical fume hood. Keep from contact with moist air and steam.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Good general ventilation should be sufficient to control airborne levels. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 7440-21-3: United Kingdom, WEL - TWA: (listed as silica, amorphous): 6 mg/m3 (inhalable dust); 2.4 mg/m3 TWA (respirable dust) United Kingdom, WEL - STEL: 30 ppm STEL (inhalable dust); 12 mg/m STEL (respirable dust) United States OSHA: 15 mg/m3 TWA (total dust); 5 mg/m3 TWA (respirable fraction) Belgium - TWA: 10 mg/m3 VLE France - VME: 10 mg/m3 VME Netherlands: 10 mg/m3 MAC Russia: (listed as silica, amorphous): 1 mg/m3 TWA Spain: 10 mg/m3 VLA-ED (inhalable fraction); 4 mg/m3 VLA-ED (respirable fraction) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear a chemical apron. Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.
Good general ventilation should be sufficient to control airborne levels. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 7440-21-3: United Kingdom, WEL - TWA: (listed as silica, amorphous): 6 mg/m3 (inhalable dust); 2.4 mg/m3 TWA (respirable dust) United Kingdom, WEL - STEL: 30 ppm STEL (inhalable dust); 12 mg/m STEL (respirable dust) United States OSHA: 15 mg/m3 TWA (total dust); 5 mg/m3 TWA (respirable fraction) Belgium - TWA: 10 mg/m3 VLE France - VME: 10 mg/m3 VME Netherlands: 10 mg/m3 MAC Russia: (listed as silica, amorphous): 1 mg/m3 TWA Spain: 10 mg/m3 VLA-ED (inhalable fraction); 4 mg/m3 VLA-ED (respirable fraction) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear a chemical apron. Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Solid
Color: silver-gray
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 2355 deg C
Freezing/Melting Point: 1410 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Insoluble in water.
Specific Gravity/Density: Not available.
Molecular Formula: Si
Molecular Weight: 28.0855
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, moisture, excess heat.
Incompatibilities with Other Materials:
Moisture, strong oxidizing agents.
Hazardous Decomposition Products:
Irritating and toxic fumes and gases, oxides of silicon.
Hazardous Polymerization: Has not been reported.
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, moisture, excess heat.
Incompatibilities with Other Materials:
Moisture, strong oxidizing agents.
Hazardous Decomposition Products:
Irritating and toxic fumes and gases, oxides of silicon.
Hazardous Polymerization: Has not been reported.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7440-21-3: VW0400000 LD50/LC50:
CAS# 7440-21-3: Draize test, rabbit, eye: 3 mg Mild; Oral, rat: LD50 = 3160 mg/kg.
Carcinogenicity:
Silicon - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 7440-21-3: VW0400000 LD50/LC50:
CAS# 7440-21-3: Draize test, rabbit, eye: 3 mg Mild; Oral, rat: LD50 = 3160 mg/kg.
Carcinogenicity:
Silicon - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
WGK (Water Danger/Protection)
CAS# 7440-21-3: No information available.
Canada
CAS# 7440-21-3 is listed on Canadas DSL List.
CAS# 7440-21-3 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7440-21-3 is listed on the TSCA inventory.
