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MATERIAL SAFETY DATA SHEET
I PRODUCT IDENTIFICATION
Trade Name: Lead Selenide Synonyms: Natural clausthalite
Chemical Family: Metal selenide Formula: PbSe
CAS #: 12069-00-0
II HAZARDOUS INGREDIENTS
Hazardous Components % OSHA/PEL ACGIH/TLV Other Sec. 302 Sec. 304 Sec. 313
Lead Selenide 0-100 .05 mg (Pb)/m3 .15 mg (Pb)/m3 Al 30 ug/m3 No Yes 10 lb Yes
Selenium Compounds 0-100 0.2 mg/m3 0.2 mg/m3 N/E No Yes 1 lb Yes
HMIS Ratings (0-4): Health: 3 Flammability: 0 Reactivity: 1
III PHYSICAL DATA
Boiling Point: N/E or N/A Melting Point: 1065 oC
Specific Gravity (H2O=1): 8.10 gm/cc at 15 oC Vapor Pressure: N/E
Vapor Density: N/A Evaporation Rate: N/A
Solubility in H2O: Insoluble % Volatile: N/E or N/A
Appearance and Odor: Gray powder and pieces, no odor.
IV FIRE AND EXPLOSION HAZARD DATA
Flash Point: N/E or N/A Method Used: Non-flammable
Explosive Limits: Lower: N/A Upper: N/A
Extinguishing Media: Use suitable extinguishing media for surrounding materials and type of fire.
Special Firefighting Procedures: Firefighters must wear full face, self-contained breathing apparatus with full protective clothing to prevent contact with skin and eyes. Fumes from fire are hazardous. Isolate runoff to prevent environmental pollution.
Unusual Fire and Explosion Hazards: When heated to decomposition, lead selenide may emit toxic fumes of selenium and lead oxide fumes. May be a moderate fire hazard as dust or in the presence of moisture.
V HEALTH HAZARD INFORMATION
Effects of Exposure:
To the best of our knowledge the chemical, physical and toxicological properties of lead selenide have not been thoroughly investigated and recorded.
Some lead compounds are experimental neoplastigens and tumorigens. Lead poisoning is one of the commonest of occupational diseases. The lead must be in such form, and so distributed, as to gain entrance into the body or tissues of the worker in measurable quantity, otherwise no exposure can be said to exist. Some lead compounds are carcinogens of the lungs and kidneys.
Lead is a cumulative poison. Increasing amounts build up in the body and eventually reach a point where symptoms and disability occur.
Selenium compounds are poison by inhalation and intravenous routes. Some selenium compounds are experimental carcinogens. Long term exposure may be a cause of amyotrophic lateral sclerosis in humans, just as it may cause “blind staggers” in cattle. Elemental selenium has low acute systemic toxicity, but dust or fumes can cause serious irritation of the respiratory tract.
Acute Effects:
Inhalation: DANGER-POISON. May cause irritation to the upper respiratory system, insomnia, headache, chill, fever, dyspnea, bronchitis, dryness of the mouth and a metallic taste.
Ingestion: DANGER-POISON. May cause constipation and abdominal pain, colic, tremors, nausea, vomiting, diarrhea, metallic taste, loss of appetite, irritability and muscle pain. May cause acute lead toxicity.
Skin: May cause irritation.
Eye: May cause irritation.
Chronic Effects:
Inhalation: May cause a garlic like odor to the breath, pallor, nervousness, depression and chronic lead toxicity. May be toxic to the central and peripheral nervous system affecting the cerebellum, spinal cord, motor and sensory nerves
Ingestion: May cause anemia, gingival lead line, paralysis in the wrist and permanent neurological injury. May cause chronic lead toxicity. May cause nephritis, scarring and shrinking of the kidney tissue.
Skin: May cause dermatitis.
Eye: May cause visual disturbances such as blurred vision.
Routes of Entry: Inhalation, ingestion.
Target Organs: May affect the respiratory system, gastrointestinal tract, central nervous system, liver, kidneys, blood, skin, eyes and the gingival tissue.
Medical Conditions Generally Aggravated by Exposure: Pre-existing lung and circulatory disorders.
Carcinogenicity: NTP: No IARC: No OSHA: Yes
EMERGENCY AND FIRST AID PROCEDURES:
INHALATION: Remove victim to fresh air, keep warm and quiet, give oxygen if breathing is difficult and seek medical attention.
INGESTION: Give 1-2 glasses of water or milk and induce vomiting. Seek medical attention. Never induce vomiting or give anything by mouth to an unconscious person.
SKIN: Remove contaminated clothing, brush material off skin, wash affected area with mild soap and water. Seek medical attention if symptoms persist.
EYE: Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes. Seek medical attention.
VI REACTIVITY DATA
Stability: Stable
Conditions to Avoid: None
Incompatibility (Materials to Avoid): Moisture
Hazardous Decomposition Products: Fumes of selenium and lead oxides.
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: Dispose of in accordance with all Federal, State and Local regulations.
VIII SPECIAL PROTECTION INFORMATION
Respiratory Protection: NIOSH approved respirator.
Ventilation: Use local exhaust to maintain concentration at or below the PEL, TLV. General exhaust is not recommended.
Protective Gloves: Rubber gloves Eye Protection: Safety glasses
Other Protective Clothing or Equipment: Protective gear suitable to prevent contamination.
IX SPECIAL PRECAUTIONS
Precautions to Be Taken in Handling and Storage: Store in a tightly sealed container. Store in a cool, dry area. Wash thoroughly after handling.
Work/Hygienic/Maintenance 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 or smoking. Do not blow dust off clothing or skin with compressed air.
Some of the chemicals listed herein are research or experimental substances which may be toxic, as defined by various governmental regulations. In accordance with Environmental Protection Agency regulations and the Toxic Substance Control Act (TSCA), these materials should only be handled by, or under the direct supervision of, a “technically qualified individual”, as defined in 40 CFR 710.2(aa).
The above information is accurate to the best of our knowledge. However, since data, safety standards, and government regulations are subject to change, and the conditions of handling and use or misuse are beyond our control, ESPI makes no warranty, either expressed nor implied, with respect to the completeness or continuing accuracy of the information contained herein, and disclaims all liability for reliance thereon. Users should satisfy themselves that they have all current data relevant to their particular use.
Issued by: S. Dierks
Date: January 1995