MATERIAL SAFETY DATA SHEET
I PRODUCT IDENTIFICATION
Trade Name: Manganese Selenide Chemical Family: Metal Selenide
Synonyms: None Known Formula: MnSe
CAS #: 1313-22-0 Molecular Weight: 133.90
II HAZARDOUS INGREDIENTS
Components PEL TLV Other Percentage Sec.302 Sec.304 Sec.313
5 mg/m3 5 mg/m3
Manganese Selenide Ceiling 0-100 No Yes, 1 lb Yes
.2 mg/m3 .2 mg/m3
Selenium Compounds NE 0-100 No No No
III PHYSICAL DATA
Boiling Point: N/E Freezing/Melting Point: N/E
5.55 gm/cc, 15 oC
Vapor Pressure: N/E Specific Gravity (H2O=1):
Vapor Density (air=1): N/A % Volatiles by Weight: N/E
Solubility in H2O: Insoluble Evaporation Rate: N/A
Appearance and Odor: Grey powder and pieces; odorless
IV FIRE AND EXPLOSION HAZARDS DATA
Flash Point (Method Used): NA Flammability: Non-flammable
Flammable Limits: Upper: N/A Lower: N/A
Extinguishing Media: Use suitable extinguishing media for surrounding materials and type of fire.
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.
Unusual Fire and Explosion Hazards: When heated to decomposition, manganese may emit toxic fumes of selenium
V HEALTH HAZARD INFORMATION
Health Hazards (Acute and Chronic):
To the best of our knowledge, the chemical, physical and toxicological properties of manganese selenide have not been
thoroughly investigated and recorded.
Some manganese compounds are experimental tumorigens. They can cause central nervous and pulmonary system damage
by inhalation of fumes and dust. Very few poisonings have occurred from ingestion. Chronic manganese poisoning is a clearly
characterized disease which results from inhalation of fumes or dusts of manganese. The central nervous system is the chief site of
damage. Exposure to dusts and fumes can possibly increase the incidence of upper respiratory infections and pneumonia (Sax,
Dangerous Properties of Industrial Materials, eighth Ed.).
Selenium compounds are poison by inhalation and intravenous routes. Some selenium compounds are experimental carcino-
gens. 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
ed.).
Routes of Entry: Inhalation
Acute Effects:
Inhalation: DANGER-POISON. May cause irritation of the respiratory tract and mucous membranes and acute selenium poisoning.
Inhalation of manganese compounds fine dusts and fumes may cause metal fume fever.
Ingestion: May cause gastrointestinal disturbances.
Skin: May cause irritation.
Eye: May cause irritation.
Chronic Effects:
Inhalation: Chronic inhalation of manganese compounds dust particles, approximately 3 um in size, for a period of a few months
may cause pulmonary pneumonitis. However, dust particles approximately 5 um in size, inhaled for about 4 hours daily for three
months did not produce pneumonitis, but may cause fibrotic changes in the lungs, decrease in hemoglobin and a change in erythrocyte
levels. May cause manganism, psychic and neurological disorders effecting the central nervous system, to develop (manganism is not
fatal but, can cause permanent disability). May cause chronic selenium poisoning. Continued intoxication may cause loss of nails
and hair, hemolytic anemia, and kidney, liver and spleen damage.
Ingestion: May cause chronic selenium toxicity.
Skin: May cause dermatitis.
Eye: Irritant dusts may cause conjunctivitis damage.
Signs and Symptoms of Exposure:
Inhalation: May cause red, dry throat. 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 the breath. Metal fume fever may
cause: Chills, fever, muscle aches, headache, dry throat, sleepiness, weakness in the legs, muscular twitching, nocturnal leg cramps
and slowness of speech. Manganism may cause: a slapping gait, cramps, tremors, slurred speech, hallucinations, insomnia, and
mental confusion. The symptoms resemble Parkinson鈥檚 disease. Other symptoms of manganism include: Inflammation of the
kidneys, cirrhosis of the liver, anorexia, muscular fatigue, sexual impotence, reduction of the white blood cells and anemia.
Ingestion: Chronic selenium poisoning may cause: Alkali disease, loss of vitality, lameness, atrophy, cirrhosis of the liver, degenera-
tion and necrosis of the myocardium.
Skin: May cause redness, itching and inflammation.
Eyes: May cause redness, itching, burning and watering.
Target Organs: May affect the central nervous system, blood, kidneys, respiratory system and liver.
Medical Conditions Generally Aggravated by Exposure: Pre-existing respiratory disorders.
Carcinogenicity: NTP: No IARC Monographs: No OSHA Reg: No
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 symptoms persist.
EYES: Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes. Seek medical attention if symptoms
persist.
VI REACTIVITY DATA
Stability: Stable
Conditions to Avoid: None
Incompatibility (Material to Avoid): None recorded
Hazardous Polymerization: Will not occur
Hazardous Decomposition Products: Fumes of Selenium
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 - Special Protection Information. 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 Local, State, and Federal regulations.
VIII SPECIAL PROTECTION INFORMATION
Respiratory Protection (Specify Type): NIOSH/MSHA approved dust, mist, vapor cartridge respirator.
Ventilation: Local Exhaust: To maintain conc. at or below PEL, TLV. Other: None
Special: Handle in a controlled, enclosed process. Mechanical: Not recommended
Protective Gloves: Rubber Eye Protection: Safety glasses
Other Protective Clothing: 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 practices. Do not use tobacco or food in the work area. Wash thor-
oughly before eating and smoking. Do not blow dust off clothing or skin with compressed air.
IX SPECIAL PRECAUTIONS
Other Handling and Storage Conditions: Store in a cool, dry area. Store in tightly sealed container. Wash thoroughly after
handling.
HMIS Ratings (0-4): Health: 3 Flammability: 0 Reactivity: 0
Some of the chemicals listed herein are research or experimental substances which may be toxic, as defined by various
government 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
regulation are subject to change, and the conditions of handling and use or misuse are beyond our control, ESPI MAKES NO WAR-
RANTY, NEITHER EXPRESSED NOR IMPLIED, WITH RESPECT TO THE COMPLETENESS OR CONTINUING ACCU-
RACY 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 1998
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