12031-49-1 (硫化镧(III),Lanthanum sulfide)

---

Section 1: Product Identification
   Chemical Name:       Lanthanum (III) sulfide (99.9%-La) (REO)    
   CAS Registry Number:       12031-49-1    
   Formula:       La2S3    
   EINECS Number:       234-752-8    
   Chemical Family:       metal chalcogenides    
   Synonym:       none    

---

Section 2: Composition and Information on Ingredients
   Ingredient       CAS Number       Percent       ACGIH (TWA)       OSHA (PEL)    
   Title Compound       12031-49-1       100%       no data       no data    

---

Section 3: Hazards Identification
   Emergency Overview:       Forms highly toxic gas on exposure to acids or stomach fluids. Irritating to skin, eyes, and respiratory tract.    
   Primary Routes of Exposure:       Ingestion, inhalation, skin and eyes    
   Eye Contact:       Causes moderate irritation of the eyes.    
   Skin Contact:       Causes slight irritation of the skin.    
   Inhalation:       Inhalation of dust will lead to irritation of the respiratory tract. Hydrogen sulfide gas, if formed, is poisonous.    
   Ingestion:       Gastric juices may cause release of toxic hydrogen sulfide.    
   Irritating to skin, eyes and respiratory tract. Hydrogen sulfide gas may cause painful conjunctivitis, headache,
   Acute Health Affects:
   nausea, dizziness, pulmonary edema and possible death.
   Chronic Health Affects:       No information available on long-term chronic effects.    
   NTP:       No    
   IARC:       No    
   OSHA:       No    

---

SECTION 4: First Aid Measures
   Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
   Eye Exposure:
   assistance in keeping their eye lids open. Get immediate medical attention.
   Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
   Skin Exposure:
   irritation persists.
   Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
   Inhalation:
   in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
   Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
   Ingestion:
   vomiting only if directed by medical personnel.

---

SECTION 5: Fire Fighting Measures
   Flash Point:       not applicable    
   Autoignition Temperature:       no data    
   Explosion Limits:       no data    
   Extinguishing Medium:       carbon dioxide or dry powder    
   If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure
   Special Fire Fighting Procedures:
   self- contained breathing apparatus and full protective clothing.
   Hazardous Combustion and       If involved in a fire this material may emit irritating fumes of hydrogen sulfide and sulfur dioxide.    
   Decomposion Products:
   Dust may form explosive mixtures with air. Contact with acids gives off hydrogen sulfide, a toxic and
   Unusual Fire or Explosion Hazards:
   flammable gas.

---

SECTION 6: Accidental Release Measures
   In the case of a spill, the fine powder should be covered with dry sodium carbonate or dolomite in order to
   Spill and Leak Procedures:
   reduce the formation of dust. Sweep up the mixture.

---

SECTION 7: Handling and Storage
   Store in a tightly sealed container. Exposure to the atmosphere may lead to release of toxic hydrogen sulfide
   Handling and Storage:
   gas. Empty containers may retain product residues that evolve toxic gases.

---

SECTION 8: Exposure Controls and Personal Protection
   Eye Protection:       Always wear approved safety glasses when handling a chemical substance in the laboratory.    
   Skin Protection:       Wear appropriate chemical resistant gloves and protective clothing.    
   Ventilation:       If possible, handle the material in an efficient fume hood.    
   If ventilation is not available a respirator should be worn. The use of a respirators requires a Respirator
   Respirator:
   Protection Program to be in compliance with 29 CFR 1910.134.
   Ventilation:       If possible, handle the material in an efficient fume hood.    
   Additional Protection:       No additional protection required.    

---

SECTION 9: Physical and Chemical Properties
   Color and Form:       yellow powder    
   Molecular Weight:       374.01    
   Melting Point:       2100-2150°    
   Boiling Point:       no data    
   Vapor Pressure:       no data    
   Specific Gravity:       4.911    
   Odor:       odor of sulfur    
   Solubility in Water:       insoluble    

---

SECTION 10: Stability and Reactivity
   Stability:       air and moisture stable    
   Hazardous Polymerization:       no hazardous polymerization    
   Conditions to Avoid:       Contact of dust cloud with an ignition source.    
   Incompatibility:       oxidizing agents and mineral acids    
   Decomposition Products:       hydrogen sulfide, sulfur dioxide, and metal oxides.    

---

SECTION 11: Toxicological Information
   RTECS Data:       No information available in the RTECS files.    
   Carcinogenic Effects:       no data    
   Mutagenic Effects:       no data    
   Tetratogenic Effects:       no data    

---

SECTION 12: Ecological Information
   Ecological Information:       No information available    

---

SECTION 13: Disposal Considerations
   Disposal:       Dispose of according to local, state and federal regulations.    

---

SECTION 14: Transportation
   Shipping Name (CFR):       Non-hazardous    
   Hazard Class (CFR):       NA    
   Additional Hazard Class (CFR):       NA    
   Packaging Group (CFR):       NA    
   UN ID Number (CFR):       NA    
   Shipping Name (IATA):       Non-hazardous    
   Hazard Class (IATA):       NA    
   Additional Hazard Class (IATA):       NA    
   Packaging Group (IATA):       NA    
   UN ID Number (IATA):       NA    

---

SECTION 15: Regulatory Information
   TSCA:       Listed in the TSCA inventory.    
   SARA (Title 313):       Title compound not listed.    
   Second Ingredient:       none    

---

SECTION 16 - ADDITIONAL INFORMATION
N/A