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High purity, all above 98.5%, no impurities after dissolution
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Various cap colors available
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Density 9.86 g/cm3
Boiling point 4400 º C
Melting point 3390 º C
Molecular formula O2Th
Molecular weight 264.03700
Precision quality 264.02800
PSA 34.14000
Appearance: White, crystalline powder
Storage conditions
Store in a cool and ventilated warehouse. Keep away from sparks and heat sources. Prevent direct sunlight. Packaging sealing. It should be stored separately from oxidants and should not be mixed for storage. The storage area should be equipped with suitable materials to contain leaks.
Stability
1. Avoid contact with strong oxidizing agents. Insoluble in water, dilute acids, and alkaline solutions, soluble in hot concentrated sulfuric acid. There is radioactivity.
2. The surface pollution levels of personnel, clothing, and equipment, walls, and floors in the workplace shall be in accordance with China's "Radiation Protection Regulations".
Ground and equipment surfaces contaminated by natural uranium and thorium radioactivity in rare earth production need to be washed with water frequently. Hand and human surfaces, as well as labor protection equipment, can be washed with regular soap and laundry detergent. In combination with strong surface contamination, soap and detergent can be used for cleaning first, and then a specialized detergent can be used for cleaning.
The thermal expansion coefficient of thorium oxide ceramic products is relatively high, reaching 9.2 at 25-1000 ℃ × 10-6/℃; The thermal conductivity is relatively small, with a value of 0.105J/(cm · s · ℃) at 100 ℃; Poor thermal stability, but high melting temperature and good high-temperature conductivity.
Almost insoluble in acids, nor in molten salts of sodium hydroxide and sodium carbonate. Slightly soluble in fuming sulfuric acid, if melted together with sodium bisulfate (sodium persulfate, ammonium bisulfate), it transforms into water-soluble sulfates.
3. There is radioactivity. Harmful when inhaled, swallowed, or in contact with the skin, with cumulative hazards.
Molecular structure
1. Molar refractive index: None available
2. Molar volume (cm3/mol): No available
3. Isometric volume (90.2K): No available
4. Surface tension (dyne/cm): No available
5. Dielectric constant: None available
6. Polarization rate (10-24cm3): No available
7. Single isotope mass: 264.027879 Da
8. Nominal mass: 264 Da
9. Average mass: 264.0369 Da
Computational Chemistry
1. Reference value for hydrophobic parameter calculation (XlogP): None
2. Number of hydrogen bond donors: 0
3. Number of hydrogen bond receptors: 2
4. Number of rotatable chemical bonds: 0
5. Number of tautomers: None
6. Topological molecule polarity surface area 34.1
7. Number of heavy atoms: 3
8. Surface charge: 0
9. Complexity: 18.3
10. Number of Isotope Atoms: 0
11. Determine the number of atomic structure centers: 0
12. Number of uncertain atomic structure centers: 0
13. Determine the number of chemical bond stereocenters: 0
14. Number of uncertain chemical bond stereocenters: 0
15. Number of covalent bond units: 1
More
1. Character: White powder, with varying densities due to different preparation methods, and is the only oxidation product of the Th O system