Potassium iodide/Jodid/Thyroblock/Thyrojod

English Name: potassium iodide; Jodid； Thyroblock； Thyrojod

Other name: grey iodine

CAS No.: 7681-11-0

KI=165.99

grade: ar

Content: ≥ 99.0%

PH (50g/l solution, 25 ℃):6.0 ~ 8.0

Total nitrogen: ≤ 0.002%

Sulfate: ≤ 0.005%

Phosphate: ≤ 0.002%

Chloride and bromide: ≤ 0.02%

Iodate and iodine: ≤ 0.002%

Clarity test: ≤ No.3

Water insoluble matter: ≤ 0.01%

Heavy metals (calculated by Pb): ≤ 0.0005%

Sodium: ≤ 0.1%

Magnesium: ≤ 0.002%

Calcium: ≤ 0.002%

Iron: ≤ 0.0003%

Arsenic: ≤ 0.00002%

Barium: ≤ 0.002%

Reducing substances: acceptable

Physicochemical properties  : white cubic crystal or powder. It is slightly hygroscopic in humid air. After long-term storage, free iodine is separated out and turns yellow, and a trace of iodate can be formed. Light and humidity can accelerate decomposition. 1g is dissolved in 0.7ml water, 0.5ml boiling water, 22ml ethanol, 8ml boiling ethanol, 51ML absolute ethanol, 8ml methanol, 7.5ml acetone, 2ml glycerol, about 2.5ml ethylene glycol. Its aqueous solution is neutral or slightly alkaline and can dissolve iodine. Its aqueous solution will also oxidize and gradually turn yellow, which can be prevented by adding a small amount of alkali. The relative density is 3.12. Melting point 680 ℃. Boiling point 1420 ℃. Approximate lethal dose (rat, intravenous) 285mg/kg.

Purpose: biochemical research. Prepare titrant in volumetric iodimetry. In haploid breeding, media such as bleeders, improved white, MS and RM were prepared. Fecal examination, etc. photograph.

Save: RT, away from light