URANIUM(VI) FLUORIDE - (7783-81-5)

소개

이름: uranium(VI) fluoride; uranium hexafluoride
* IUPAC
CAS 번호: 7783-81-5
화학식: UF6
몰 질량: 352.0193292 g
물질의 상태: colorless solid
질량 백분율: U 67.618 %; F 32.381 % 

분류

• 무기

용도 / 기능

• "Fluorine is used in the nuclear industries of many countries to make uranium hexafluoride for enrichment of uranium in the fissile 235U isotope...Repeated diffusion of UF6 (g) through porous plugs (or centrifugation of the vapor) concentrates 235UF6 relative to 238UF6, since the speed of diffusion varies inversely as the square root of the molecular mass. This enrichment is not needed for fueling power reactors with good neutron economy, such as the Canadian CANDU system. Gaseous diffusion plants for UF6 are expensive, not least because UF6 is itself an aggressive fluorinating agent and thus must be contained in special fluorine-resistant materials." 1

물리적 특성



밀도 (g/cm3):
5.09 at room temperature/pressure 2
* - 1 atm pressure

용해도

정성:

본딩

본딩: ionic
Ionic Character: 69.09 %

열화학

ΔHf° (s): -505 kcal/mol 3 = -2,112.92 kJ/mol
ΔHf° (s): -525.10 kcal/mol = -2197.0 kJ/mol 4
ΔHf° (g): -513.24 kcal/mol = -2147.4 kJ/mol 4
S° (s): 54.4 cal/(mol•K) 5 = 227.61 J/(mol•K)
S° (s): 54.40 cal/(mol•K) = 227.6 J/(mol•K) 6
S° (g): 90.32 cal/(mol•K) = 377.9 J/(mol•K) 6
ΔGf° (s): -485 kcal/mol 7 = -2,029.24 kJ/mol
ΔGf° (s): -494.38 kcal/mol = -2068.5 kJ/mol 8
ΔGf° (g): -493.24 kcal/mol = -2063.7 kJ/mol 8

반응

자세한 내용은

소스

(1) - Swaddle, T.W. Inorganic Chemistry; Academic Press: San Diego, 1997; pp 230-231.
(2) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 4-93.
(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(4) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 5-16.
(5) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(6) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 5-16.
(7) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(8) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 5-16.
(9) - Swaddle, T.W. Inorganic Chemistry; Academic Press: San Diego, 1997; p 230.