Modified purification of mercuric iodide for crystal growth
The standard procedure used in our laboratory to purify commercially available mercuric iodide consists of a sequence of steps: (1) repeated sublimation under continous evacuation, followed by (2) melting and recrystallization, and (3) a sublimation process in a closed tube. This paper describes a modification of the standard purification sequence by adding recrystallization of the mercuric iodide in hydrochloric acid. Leaching cation impurities out of mercuric iodide powder with hydrochloric acid has been practiced before by Zaletin, (V.M. Zaletin, I.H. Nozhiua, I.N. Fomin, V.T. Shystov, and N.V. Protasov, Atomic Energy 48, 169 (1980)). Our objective for the hydrochloric acid treatment was to remove nitrates and hydrocarbons which were interfering with the vapor transport during crystal growth. Results of the procedure are presented in terms of total carbon and selected ion content of the treated and untreated material. 13 refs., 8 figs., 3 tabs.
- Research Organization:
- EG and G, Inc., Goleta, CA (USA). Santa Barbara Operations
- DOE Contract Number:
- AC08-83NV10282
- OSTI ID:
- 6842477
- Report Number(s):
- EGG-10282-2156; CONF-8709309-1; ON: DE88014960
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
CRYSTAL GROWTH
DATA
DISSOLUTION
EVAPORATION
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
IMPURITIES
INFORMATION
INORGANIC ACIDS
IODIDES
IODINE COMPOUNDS
LEACHING
MELTING
MERCURY COMPOUNDS
MERCURY HALIDES
MERCURY IODIDES
MODIFICATIONS
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PURIFICATION
RECRYSTALLIZATION
REMOVAL
SEPARATION PROCESSES
SUBLIMATION