Analysis of cobalt(II) in 2-(5-cyanotetrazolato)pentaammine cobalt(III) perchlorate
A new method of analysis is described for cobalt(II) complexes in 2-(5-cyanotetrazolato)pentaammine cobalt(III) perchlorate. The color reagent is 2,2'-dipyridyl-2-pyridyl hydrazone (DPPH), which complexes with the Co(II) and is oxidized to a substitution inert Co(III) (DPPH)/sub 2/ complex. Interferences from other ions is not a problem because the complex is stable at pH 2 - where complexes formed between DPPH and other ions are not stable. The usual air oxidant in this type of analysis has been replaced with ammonium peroxydisulfate improving both the precision and accuracy. The Sandell sensitivity is 0.0015 ..mu..g Co(II)/cm/sup 2/. The system obeys Beer's Law up to 4 ..mu..g in Co(II)mL of solution and has a molar absorptivity of 3.9 x 10/sup 4/ L/mole cm at 514 nm. The procedure was used to determine the degree of decomposition in samples that had undergone partial thermal decomposition. 11 refs., 4 figs., 6 tabs.
- Research Organization:
- Monsanto Research Corp., Miamisburg, OH (USA). Mound
- DOE Contract Number:
- AC04-76DP00053
- OSTI ID:
- 5087261
- Report Number(s):
- MLM-3307; ON: DE86002524
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nuclear magnetic resonance study of the intramolecular rearrangement of 2-(5-cyanotetrazolato)pentaammine cobalt (III) perchlorate. [Perdeuterodimethylsulfoxide]
Global decomposition kinetics and critical explosion temperatures of 2-(5-cyanotetrazolato) pentaammine cobalt (III) perchlorate
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COBALT PERCHLORATES
ABSORPTIVITY
QUANTITATIVE CHEMICAL ANALYSIS
DPPH
AMMONIA
CHEMICAL EXPLOSIVES
COBALT COMPLEXES
COMPARATIVE EVALUATIONS
DETONATION LIMITS
EXPERIMENTAL DATA
PH VALUE
PYROLYSIS
SPECTROPHOTOMETRY
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
COBALT COMPOUNDS
COMPLEXES
DATA
DECOMPOSITION
EXPLOSIVES
HALOGEN COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
NITRO COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PERCHLORATES
PHYSICAL PROPERTIES
RADICALS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties