Synonym:Rare earth metal; under white mineral oil, paraffin oil,

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Section 2: Composition and Information on Ingredients
IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL)
Title Compound7440-10-0100%no datano data
mineral oil8042-47-5%no datano data

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Section 3: Hazards Identification
Emergency Overview:Mineral oil may be harmful if swallowed, an irritant, and possible tumorigen.
Primary Routes of Exposure:Ingestion, inhalation of any dust.
Eye Contact:Oil, and dust, if present, may cause slight to mild irritation of the eyes.
Skin Contact:Dust, if present, may cause slight to mild irritation of the skin.
Inhalation of any oil free fine dust may be irritating to the nasal cavity, mucous membranes and respiratory
Inhalation:
tract.
Ingestion:No information is available on the physiological effects of ingestion. Mineral oil may be harmful.
Acute Health Affects:Oil free dust, if present, may be irritating to skin, eyes and respiratory tract.
Chronic Health Affects:No information available on long-term chronic effects. Impurities in some mineral oils may be tumorigens.
NTP:No
IARC:No
OSHA:No

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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.
(For dust) Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as
Inhalation:
difficulty in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
If oil ingested, seek medical attention immediately. Keep the victim calm. Give the victim water (only if
Ingestion:
conscious). Induce vomiting only if directed by medical personnel.

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SECTION 5: Fire Fighting Measures
Flash Point:not applicable
Autoignition Temperature:no data
Explosion Limits:none
Extinguishing Medium:Dry chemical or Class D metal fire agent.
(As dust) If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive
Special Fire Fighting Procedures:
pressure self-contained breathing apparatus.
Hazardous Combustion andIf involved in a fire, burning metal may produce mildly irritating fumes of Praseodymium oxide or carbonate.
Decomposion Products:
Ingot may ignite during grinding. Any dust may form explosive mixtures with air. Evolves hydrogen with hot
Unusual Fire or Explosion Hazards:
water.

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SECTION 6: Accidental Release Measures
Spill and Leak Procedures:Not applicable; material is a metal ingot. Mineral oil is a slipping hazard.

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SECTION 7: Handling and Storage
Handling and Storage:Store under mineral oil. Handle under an inert atmosphere of argon.

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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 protective clothing and gloves.
Ventilation:If converted to a fine oil free dust, handle the material in an efficient fume hood.
If the material is converted to an oil free fine dust and ventilation is not available a respirator should be worn.
Respirator:
The use of respirators requires a Respirator Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation:If converted to a fine oil free dust, handle the material in an efficient fume hood.
Additional Protection:No additional protection required.

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SECTION 9: Physical and Chemical Properties
Color and Form:packed in mineral oil
Molecular Weight:140.9
Melting Point:935°
Boiling Point:3127°C
Vapor Pressure:no data
Specific Gravity:6.782
Odor:none
Solubility in Water:reacts with water

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SECTION 10: Stability and Reactivity
Stability:air sensitive, moisture sensitive solid
Hazardous Polymerization:no hazardous polymerization
Conditions to Avoid:Contact with hot water. Any oil free fine dust mixed with air.
Incompatibility:Water, alcohols, oxidizers, oxygen, halogens, halocarbons, mineral acids.
Decomposition Products:None. For Mineral oil: carbon dioxide, carbon monoxide, organic fumes.

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SECTION 11: Toxicological Information
RTECS Data:No information available in the RTECS files.
Carcinogenic Effects:Mineral oil : Possible Tumorigen
Mutagenic Effects:No data available
Tetratogenic Effects:No data available

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SECTION 12: Ecological Information
Ecological Information:No information available

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

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SECTION 14: Transportation
Shipping Name (CFR):Water-reactive solid, N.O.S.
Hazard Class (CFR):4.3
Additional Hazard Class (CFR):NA
Packaging Group (CFR):III
UN ID Number (CFR):UN# 2813
Shipping Name (IATA):Water-reactive solid, N.O.S.
Hazard Class (IATA):4.3
Additional Hazard Class (IATA):NA
Packaging Group (IATA):III
UN ID Number (IATA):UN# 2813

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SECTION 15: Regulatory Information
TSCA:Listed in the TSCA inventory
SARA (Title 313):Title compound not listed
Second Ingredient:mineral oil listed in TSCA

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SECTION 16 - ADDITIONAL INFORMATION
N/A