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7681-11-0
Ki
Powder
Medicine Grade
White or Almost White Powder or Colourlesscrystals
Very Soluble in Water, Freely Soluble in Glycerol
166.0
Meets The Requirements
Drum
25KG/DRUM
Cangzhou China
2827600000
Product Description
POTASSIUM IODIDE
Kalii iodidum
Molecular formula:KI
molecular weight:166.0
CAS No.:7681-11-0
chemical formula:
DEFINITIO
NContent: 99.0 per cent to 100.5 per cent (dried substance).
CHARACTERSAppearance : white or almost white powder or colourlesscrystals.
Solubility : very soluble in water, freely soluble in glycerol,soluble in ethanol (96 per cent).
Specification of potassium iodide
| Item | Limit |
| Characteristics | This product is colorless crystalline or white crystalline powder; odourless; Slightly wet. This product dissolved easily in water. Dissolved in ethanol. |
| Identification | Solution S (see Tests) gives the reactions of iodides. |
| Solution S gives the reactions of potassium. | |
| Acidity/Alkalinity | To 12.5 mL of solution S add 0.1 mL ofbromothymol blue solution R1. Not more than 0.5 mL of0.01 M hydrochloric acid is required to change the colour ofthe indicator. |
| Appearance of Solution | Solution S is clear and colourless. |
| Thiosulfate and Barium | No turbidity develops within 1 min. |
| Iodide | Any color produced in the Sample solution does not exceed that produced in the Standard solution (Not more than 4 μg/g). |
| Nitrate,Nitrite and Ammonia | No blue coloration of the paper is discernible |
| Loss on drying | It loses Not more than1.0% of its weight. |
| Assay | 99.0% and 101.5% |
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