| Identification | More | [Name]
THORIUM NITRATE HYDRATE | [CAS]
13823-29-5 | [Synonyms]
THORIUM (IV) NITRATE
THORIUM(IV) NITRATE HYDRATE
THORIUM NITRATE
THORIUM NITRATE HYDRATE
Thorium tetranitrate
nitricacid,thorium(4+)salt
nitricacid,thorium(4++)salt
thorium(4+)nitrate
thoriumnitrate((th(no3)4))[ur]
thoriumnitrate,solid
THORIUM NITRATE GR
THORIUMNITRATETETRAHYDRATE
THORIUMNITRATE,CRYSTAL,REAGENT
nitric acid, thorium salt
thorium nitrate[ur]
Tetranitric acid thorium(IV) salt
TRORIUMNITRATE | [EINECS(EC#)]
237-514-1 | [Molecular Formula]
N4O12Th | [MDL Number]
MFCD00148855 | [Molecular Weight]
480.06 | [MOL File]
13823-29-5.mol |
| Chemical Properties | Back Directory | [Appearance]
white solid | [Melting point ]
decomposes at 500℃ [CRC10] | [solubility ]
very soluble in H2O, ethanol | [color ]
hygroscopic white plates | [Stability:]
Stable. Deliquescent. Weakly radioactive (radioactivity 3300 Bq/g). Incompatible with reducing agents. | [Water Solubility ]
g/100g H2O: 186 (0°C), 187 (10°C), 191 (20°C) [LAN05]; additional solubility data are in [SIE94] | [Merck ]
13,9454 | [Uses]
Reagent for determination of fluorine, thoriated
tungsten filaments. | [CAS DataBase Reference]
13823-29-5(CAS DataBase Reference) | [EPA Substance Registry System]
13823-29-5(EPA Substance) |
| Hazard Information | Back Directory | [Chemical Properties]
white solid | [General Description]
A white crystalline mass. Mildly toxic. Not combustible but accelerates burning of combustible materials. May explode in a fire if in large quantities or if the combustible material is finely divided. Toxic oxides of nitrogen are produced in fires. Mildly radioactive. Radioactive materials emit certain rays detectable only by instruments. Minimal radiation hazard in transport. No protective shielding for packages is required. | [Hazard]
Dangerous fire and explosion risk in contact
with organic materials, strong oxidizing agent.
Radioactive. | [Reactivity Profile]
Mixtures of metal/nonmetal nitrates with alkyl esters may explode, owing to the formation of alkyl nitrates; mixtures a nitrate with phosphorus, tin (II) chloride. or other reducing agents may react explosively [Bretherick 1979 p. 108-109]. With water forms a weak solution of nitric acid, the reaction is not hazardous. | [Air & Water Reactions]
Somewhat soluble in water. | [Health Hazard]
Compound has low chemical toxicity, but alpha emission is expected to constitute a hazard if a fairly large amount is inhaled or ingested. Dust may irritate eyes and cause diffuse dermatitis. Beta and gamma emission is small. | [Preparation]
The phosphates are dissolved in cone, hydrochloric acid and precipitated with oxalic acid, and the thoroughly washed precipitate is extracted with warm aqueous Na2CO3. Most of the rare earths stay in the residue, while the thorium dissolves in the form of a carbonate complex, Na6Th(CO3)5. The material is freed of the remaining traces of rare earths by repeated crystallization in the form of the sulfate Th(SO4)2?8H2O. The procedure consists of precipitation of the hydroxide with ammonia and solution of the latter in sulfuric acid to re-form the sulfate. The precipitate from the last purification stage is dissolved in nitric acid to yield the nitrate.
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| Safety Data | Back Directory | [Hazard Codes ]
O,Xn,R | [Risk Statements ]
R8:Contact with combustible material may cause fire.
R22:Harmful if swallowed.
R33:Danger of cumulative effects.
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
2915 | [RTECS ]
XO6825000 | [HazardClass ]
7 | [Safety Profile]
Poison by
intraperitoneal, intravenous, and
intratracheal routes. Moderately toxic by
ingestion. Experimental reproductive
effects. Radioactive. An oxidizing material;
when in contact with readily combustible
substances will cause violent combustion or
ignition. When heated to decomposition it
emits toxic fumes of NOx. See also
THORIUM and NITRATES. | [Hazardous Substances Data]
13823-29-5(Hazardous Substances Data) |
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