MATERIAL SAFETY DATA SHEET
I PRODUCT IDENTIFICATION
Trade Name: Iron Selenide Synonym: Iron Selenide, Iron monoselenide
Chemical Family: Metal Selenide Formula: FeSe
Molecular Weight: 131.81 CAS #: 1310-32-3
II HAZARDOUS INGREDIENTS
Hazardous Components: OSHA PEL: ACGIH TLV: Other Limits: Percentage:
0.2 mg Se/m3 0.2 mg Se/m3
Iron Selenide N/E 0.0-100.0
SEC. 302 (EHS): No Sec. 304 RQ: Yes 1 lb Sec. 313: Yes
HMIS Ratings(0-4): Health: 3 Flammability: 0 Reactivity: 0
HMIS Protective Equipment: Glasses, gloves, clothing, combo resp
III PHYSICAL DATA
Boiling Point: N/A Melting Point: N/A
Specific Gravity (H2O=1): 6.8 gm/cc Vapor Density (Air=1): N/A
Vapor Pressure (mm Hg): N/E % Volatiles: N/A
Solubility in H2O: Insoluble Evaporation Rate: N/A
Appearance and Odor: Solid black powder with no odor.
IV FIRE AND EXPLOSION HAZARDS DATA
Flash Point (Method used): N/A - Non-Flammable Explosive Limits: LEL: N/A UEL: N/A
Extinguishing Media: USE: Not applicable. Use suitable extinguishing media for surrounding materials and type of fire.
Unusual Fire & Explosion Hazard: When heated to decomposition, iron selenide may emit toxic fumes of selenium.
Special Fire Fighting 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.
V HEALTH HAZARD INFORMATION
Routes of Entry: Inhalation, Skin, and Ingestion.
Target Organs: Upper respiratory system, eyes, skin, liver, kidneys and blood.
Carcinogenicity: NTP: No IARC Monographs: No OSHA Regulated: No
Recommended Exposure Limits: See 鈥淪ection II鈥? LD50/LC/50: No toxicity data recorded.
Health Hazards (Acute and Chronic):
To the best of our knowledge the chemical, physical and toxicological properties of iron selenide have not been thoroughly
investigated and recorded.
Iron compounds have varying toxicity. Some iron compounds are suspected carcinogens. In general, ferrous compounds are
more toxic than ferric compounds. Acute exposure to excessive levels of ferrous compounds can cause liver and kidney damage,
altered respiratory rates and convulsions (Sax, Dangerous Properties of Industrial Materials, eighth edition).
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 鈥渂lind staggers鈥? in
cattle. Elemental selenium has low acute systemic toxicity, but dust or fumes can cause serious irritation of the respiratory tract.
Inorganic selenium compounds can cause dermatitis. Garlic odor of breath is a common symptom. Pallor, nervousness, depression,
digestive disturbances and death have been reported in cases of chronic exposure (Sax, Dangerous Properties of Industrial Materials,
eighth edition).
Inhalation: Acute: DANGER-POISON!! May cause irritation to the respiratory tract and acute iron and selenium poisoning. Large
amounts of iron may cause iron pneumoconiosis.
Chronic: May cause chronic iron and selenium poisoning. Continued intoxication may cause loss of nails and hair, hemolytic
anemia, kidney, liver and spleen damage, pulmonary fibrosis and pathological deposition of iron in the body tissue.
Ingestion: Acute: DANGER-POISON!! May cause gastrointestinal disturbances.
Chronic: May cause damage to liver and chronic selenium toxicity.
Skin: Acute: May cause irritation.
Chronic: May cause dermatitis.
Eye: Acute: May cause irritation.
Chronic: No chronic health effects recorded.
Signs and Symptoms of Exposure:
Inhalation: May cause a red, dry throat and coughing. Acute iron poisoning may cause: biphasic shock, rapid increase in respiration
and pulse rate, congestion of blood vessels which may lead to hypotension, pallor and drowsiness. Chronic iron poisoning may cause:
hemorrhagic necrosis of the gastrointestinal tract, hepatotoxicity, metabolic acidosis, prolonged blood clotting time, elevation of
plasma levels of serotonin and histamine. Symptoms of pathological deposition of fibrosis of the pancreas, diabetes, mellitus and
liver cirrhosis. Acute selenium poisoning may cause: nervousness, fever, vomiting, somnolence, drop in blood pressure, labored
breathing and toxic action on the nervous system may lead to respiratory failure. Chronic selenium poisoning may cause: depression,
marked pallor, coated tongue, gastrointestinal disorders, garlic odor of breath.
Ingestion: Chronic selenium toxicity may cause: alkali disease, loss of vitality, lameness, atrophy, cirrhosis of the liver, degeneration
and necrosis of the myocardium.
Skin: May cause redness, itching, inflammation and burning.
Eye: May cause redness, itching, burning and watering.
Medical Conditions Generally Aggravated by Exposure: Pre-existing respiratory and skin disorders
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 milk or water and induce vomiting; keep warm and quiet seek medical attention. Never give
anything by mouth or induce vomiting in an unconscious person.
SKIN: Remove contaminated clothing; brush material off skin; wash affected area with mild soap and water; seek medical attention
if irritation persists.
EYE: Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes. Seek medical attention if irritation
persists.
VI REACTIVITY DATA
Stability: Stable
Incompatibility (Material to Avoid): None Recorded
Hazardous Polymerization: Will not occur.
Hazardous Decomposition or Byproducts: Fumes of Selenium.
VII SPILL OR LEAK PROCEDURES
Steps to Be Taken in Case Material Is Released or Spilled: Wear suitable protective clothing. 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 Regulations.
Hazard Label Information: Store in a cool dry place in a tightly sealed container, Wash thoroughly after handling.
Precautions to Be Taken in Handling and Storage: None
Other Precautions: None
VIII SPECIAL PROTECTION INFORMATION
Respiratory Protection: NIOSH approved dust, mist, vapor cartridge respirator.
Ventilation: Local: To maintain concentrations at or below PEL or TLV Other: None
Special: Handle in a controlled enclosed environment Mechanical: Not Recommended
Protective Gloves: Rubber Gloves Eye Protection: Safety Glasses
Other Protective Clothing or Equipment: Protective gear suitable to prevent contamination.
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 practiced. 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.
IX SPECIAL PRECAUTIONS
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 鈥渢echnically qualified individual鈥?, 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 or implied, with respect to the completeness or continuing accuracy of the information contained herein, and dis-
claims 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
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