Thorium nitrate

  • Thorium tetranitrate
Formula
Th(NO3)4
Structure
Description
A white crystalline mass. Mildly radioactive. Radioactive materials emit certain rays detectable only by instruments. No protective shielding for packages is required.
Uses
Thorium nitrate with 1% cerium nitrate constitutes the usual impregnating liq for incandescent mantles, as a reagent for determination of fluorine.

Registry Numbers and Inventories.
CAS
13823-29-5
EC (EINECS/ELINCS)
237-514-1
RTECS
XO6825000
RTECS class
Reproductive Effector
UN (DOT)
2976
Merck
12,9517
Beilstein/Gmelin
14379 (G)
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
N4O12Th
Formula mass
480.06
Melting point, °C
55
Boiling point, °C
837
Solubility in water
10 g/L (0 C)

Hazards and Protection.
Storage
Protect against physical damage. Store in cool, dry place. Separate from combustible, organic or other readily oxidizable materials. Avoid storage on wood floors. Immediately remove and dispose of any spilled nitrate. Keep well closed.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Contact the local, state, or Department Of Energy Radiological Response Team. Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers.
Stability
No data.
Incompatibilities
May react explosively.

Fire.
Fire fighting
Contact the local, state, or Department Of Energy Radiological Response Team. Flood with water. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
Oxidizing material. Increases the flammability of any combustible substance.
Combustion products
Yields toxic gaseous oxides of nitrogen when involved in fire When large quantities are involved in fire, nitrate may fuse or melt, in which condition application of water may result in extensive scattering of molten material.
Health
1

Health.
Exposure effects
Supralethal radiation doses may result in headache, acute brain syndrome, alterations in mental status including coma, and (rarely) seizures within minutes of exposure. Prenatal ionizing radiation exposure may cause congenital anomalies, mental retardation, and an increased incidence of seizures.
   Ingestion
Gastrointestinal syndrome (nausea/vomiting) commonly occurs after doses of 9 to 20 gy and may occur following doses as low as 5 gy. Initial vomiting is followed by persistent diarrhea, which may be bloody.
   Inhalation
Pulmonary radiation injury may result in radiation pneumonitis and radiation pulmonary fibrosis.
   Skin
Thermonuclear burns may occur. If erythema is produced by a penetrating radiation, serious systemic injury is certain.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Medical problems take priority over radiological concerns. Use first aid treatment according to the nature of the injury. Do not delay care and transport of a seriously injured person.
   Inhalation
Monitoring exposed patients for contamination and decontamination procedures should be started. All personnel involved in handling patients should wear disposable protective clothing. The patient should be completely undressed and given a soap and water bath or shower (if the patient's condition permits and if the facility exists). Acute inhalation of radionuclides presents some difficult problems.
   Skin
Wash thoroughly with soap and water.
   Eyes
Flush with water until solid is removed.

Transport.
UN number
2976
Response guide
Hazard class
7
USCG CHRIS Code
TRN
 
Std. Transport #
4929116