neptunium dioxide

Base Information

• Chemical Name: neptunium dioxide
• CAS No.: 12035-79-9
• Molecular Formula: NpO₂
• Molecular Weight: 269.047
• Mol file: 12035-79-9.mol

Synonyms:Neptuniumdioxide

Chemical Property of neptunium dioxide

Chemical Property:

• Melting Point: 2547°C
• PSA: 0.00000
• Density: 11.100
• LogP: -0.23760

Purity/Quality:

98%,99%, ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Uses: Neptunium dioxide is a powder used to form metal targets that are to be radiated by plutonium. Fabrication by powder metallurgy into target elements to be irradiated to produce Pu-238.

Technology Process of neptunium dioxide

There total 9 articles about neptunium dioxide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

neptunium oxide (21057-99-8,12035-79-9) → neptunyl(2+) (18973-22-3,12035-79-9)

Guidance literature:

With water; nitric acid; cis-nitrous acid; In dodecane; nitric acid; soln. of NpO2(1+) in 30% soln. of tributylphosphate in dodecane mixed with HNO2 and HNO3 in 30% tributylphosphate/dodecane at 30°C for up to 30 min; not isolated, react. followed spectrophotometrically; Kinetics;

Reference yield:

neptunium (IV) → neptunium oxide (21057-99-8,12035-79-9)

Guidance literature:

With water; iron(III); In perchloric acid; byproducts: Fe(2+), H(1+); 25°C; 1 M HClO4; mechanism discussed; presence of methanol or ethanol discussed;; Kinetics;

Reference yield:

neptunium(VII) → neptunyl(2+) (18973-22-3,12035-79-9)

Guidance literature:

With Tl⁽¹⁺⁾; In perchloric acid; 25°C;;

upstream raw materials:

neptunium oxide

NpO₂⁽³⁺⁾

neptunyl⁽²⁺⁾

Downstream raw materials:

neptunyl⁽²⁺⁾

water

NpO₂⁽³⁺⁾

neptunium oxide

Refernces

• 1、 Asprey, L. B.,Penneman, R. A.. "". . p. 172 - 172. Retrieved 1967.
• 2、 Sullivan, J. C.,Cohen, D.,Hindman, J. C.. "". . p. 4029 - 4029. Retrieved 1957.
• 3、 Koltunov, V. S.,Mezhov, E. A.,Baranov, S. M.. "Kinetics of Reaction between Neptunium(VI) and 3,3'-Bis(diaziridinyl)". . p. 65 - 68. Retrieved 2008/10/08.