Safety data for thorium nitrate

General

Synonyms: nitric acid thorium (4+) salt
Molecular formula: Th(NO₃)₄
CAS No: 13823-29-5
EC No:

=============  Composition/Information on Ingredients  =============

Ingred Name:THORIUM NITRATE
CAS:14767-04-5

=====================  Hazards Identification  =====================

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO OSHA:NO
Health Hazards Acute and Chronic:TOXIC BY INGESTION & INHALATION.
    PROLONGED OR REPEATED EXPOSURE TO RADIOACTIVE MATERIAL CAUSES BLOOD
    DISORDERS OR LEUKEMIA.
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:SEE HEALTH HAZARDS.
Medical Cond Aggravated by Exposure:DATA NOT AVAILABLE.

=======================  First Aid Measures  =======================

First Aid:SKIN: WASH THOROUGHLY W/SOAP & WATER. EYES: IMMEDIATELY FLUSH
    THOROUGHLY W/WATER FOR A MINIMUM OF 15 MINUTES. INHAL: REMOVE TO
    FRESH AIR. INGEST: IF CONSCIOUS, INDUCE VOMITING. GET MEDICAL
    ASSISTANCE FOR ALL CASES OF OVEREXPOSURE.

=====================  Fire Fighting Measures  =====================

Extinguishing Media:USE ANY SUITABLE FOR ADJACENT MATERIAL.
Fire Fighting Procedures:WEAR NIOSH/MSHA APPROVED SCBA & FULL
    PROTECTIVE EQUIPMENT . PROTECTIVE CLOTHING SHOULD BE SUITABLE FOR
    RADIATION HAZARD.
Unusual Fire/Explosion Hazard:STRONG OXIDIZER.

==================  Accidental Release Measures  ==================

Spill Release Procedures:TAKE UP & CONTAINERIZE FOR PROPER DISPOSAL.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

====================== Handling and Storage  ======================

Handling and Storage Precautions:STORE IN GLASS IN A SAFETY CONTR, AWAY
    FROM EXPOS TO HEAT/MOISTURE/ORGANICS/COMBUST(S) & REDUCING
    SUBSTANCES. DO NOT BREATHE DUST. (SUPP DATA)
Other Precautions:RADIOACTIVE! RADIATION MONITORING SHOULD BE CONDUCTED
    ON PERSONNEL HANDLING THIS MATL FOR PRLNG/RPTD PERIOD OF TIME.
    TESTS ON LAB ANIMALS INDICATE MATL MAY PRODUCE ADVERSE REPRODUCTIVE
    EFFECTS. THIS M ATERIAL IS AN OXIDIZER.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:NIOSH/MSHA APPROVED RESPIRATOR SHOULD BE WORN IN
    THE ABSENCE OF ADEQUATE VENTILATION.
Ventilation:MATERIAL SHOULD BE HANDLED OR TRANSFERRED IN AN APPROVED
    FUME HOOD OR WITH ADEQUATE VENTILATION.
Protective Gloves:NATURAL RUBBER/PVC/NEOPRENE OR EQUIV.
Eye Protection:CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:EYE WASH & SAFETY EQUIPMENT SHOULD BE
    READILY AVAILABLE.
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
HNDLG/STOR PREC: DO NOT GET IN EYES, ON SKIN OR ON CLOTHING. DO NOT
    TAKE INTERNALLY.

==================  Physical/Chemical Properties  ==================

HCC:A1
Melt/Freeze Pt:M.P/F.P Text:932F,500C
Solubility in Water:SOLUBLE.
Appearance and Odor:WHITE, CRYSTALLINE ODORLESS CRYSTALS.

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
REDUCING AGENTS, ORGANIC & COMBUSTIBLE SUBSTANCES.
Stability Condition to Avoid:HEAT; CONTACT WITH COMBUSTIBLE MATTER.
Hazardous Decomposition Products:NOX, THORIUM.

====================  Disposal Considerations  ====================

Waste Disposal Methods:TO BE PERFORMED IN COMPLIANCE WITH ALL CURRENT
    LOCAL, STATE, AND FEDERAL REGULATIONS.

 
 

Physical data

Appearance: white solid
Melting point:
Boiling point:
Vapour density:
Vapour pressure:
Specific gravity:
Flash point:
Explosion limits:
Autoignition temperature:

 

Stability

Stable. Deliquescent. Weakly radioactive (radioactivity 3300 Bq/g). Incompatible with reducing agents.

 

Toxicology

Toxic in contact with skin and if swallowed or inhaled as dust. This material should be treated as a potential mutagen and carcinogen.

 

Personal protection

Safety glasses, protective gloves and good ventilation. In the U.K. users must give at least 28 days notice to the Health and Safety Executive before working for the first time with more than 0.6g.