26190-43-2

Basic information

• Product Name: technetium(4+)
• Synonyms: Technetium, ion (Tc4+)
• CAS NO: 26190-43-2
• Molecular Formula: Tc
• Molecular Weight: 97.905
• Mol File: 26190-43-2.mol

Chemical Properties

• CAS DataBase Reference: technetium(4+)(CAS DataBase Reference)
• NIST Chemistry Reference: technetium(4+)(26190-43-2)
• EPA Substance Registry System: technetium(4+)(26190-43-2)

Safety Data

• Hazardous Substances Data: 26190-43-2(Hazardous Substances Data)

Upstream product

• 53440-18-9 hydrazinium 
• 23288-61-1 pertechnetate anion 

Downstream Products

• 23288-61-1 pertechnetate anion 

Relevant articles and documents

Chemistry of trans-aquonitrosyltetraamminetechnetium(I) and related studies

Attempts to reduce Tc(VII) or Tc(IV) in strongly acidic solutions containing noncomplexing anions indicate that reduction to Tc(II) is possible, but the species of lower oxidation state are unstable and there is no assurance that they are mononuclear This instability contrasts markedly with that of a compound reported by Eakins et al.2 as containing [Tc(NH2OH)2-(NH3)3H 2O]2+. Structure determination by Radonovich and Hoard on the chloride salt of the cation shows it to be trans-[Tc(NH3)4(H2O)NO]2+, rather than that formulated by Eakins. The nitrosyl ion shows a stretch in the ir spectrum at 1680 cm-1, the low frequency indicating great stabilization by TcI→(NO)I back-bonding. The species is remarkably inert to substitution, as is the nitrosyl group to nucleophilic attack. At low pH, the trans-[Tc(NH3)4(H2O)NO]3+/2+ couple is reversible, Ef against NHE being 0.80 V. The ion of higher oxidation state undergoes substitution more readily than does that of charge 2+ and is unstable at higher pH. The values of pKa for the 2+ and 3+ species have been measured as 7.3 and ca. 2.0, respectively. Modification of the Eakins method of preparation leads to other derivatives but of these only [Tc(1,10-phen)2(NH3)NO]2+ has been at all well characterized.

Effect of some reducing and complexing agents on the extraction behavior of technetium in the TBP-HNO3 system

The effect of a series of complexing and reducing agents on the extraction-chemical behavior of technetium as applied to extraction splitting of uranium and plutonium in the Purex process was examined. Kinetic parameters of the catalytic decomposition of

Research committee on ruthenium and technetium chemistry in PUREX system, organized by the atomic energy society of Japan

The paper summarizes the activity of the committee "Ruthenium and Technetium Chemistry in the PUREX System," with a focus on basic information on technetium behavior in the PUREX process, the principles of plant design, and the behavior during the final w