Factory Supply High Quality Potassium iodide 99% Solid CAS7681-11-0

Physical and chemical properties of potassium iodide
Density 3.13
Boiling point 1330 ºC
Melting point 680 ºC
Molecular formula IK
Molecular weight 166.003
Flash point 1330°C
Accurate mass 165.868164
Appearance White to off-white crystalline powder
Vapor density 9 (vs air)
Steam pressure 0.31 mm Hg (25 °C)
Refractive index 1.677
Storage condition
1. Should be stored in a cool, ventilated, dark warehouse. Protect against rain and sun when transporting.

2. Handle gently when loading and unloading, strictly prohibit vibration and impact. In case of fire, it can be put out with sand and carbon dioxide fire extinguishers.

stability
1. In case of light or long time in the air, free iodine can be precipitated and yellow. It is easier to oxidize and turn yellow in acidic aqueous solution.
2. It is more prone to yellowing in acidic aqueous solutions. Potassium iodide is a co-solvent of iodine, and when dissolved, it forms potassium triiodide with iodine, and the three are in equilibrium.
3. Potassium iodide is the permitted food iodine fortification agent, which can be used in infant food in China, and the amount is 0.3-0.6mg/kg. It can also be used for table salt, the amount of use is 30-70mL/kg. Iodine, as a component of thyroxine, participates in the metabolism of all substances in livestock and poultry and maintains the heat balance in the body. It is an essential hormone in lactation for the growth and reproduction of livestock and poultry, and can improve the growth performance of livestock and poultry and promote body health. If the animal body iodine deficiency, will lead to metabolic disorders, body disorders, goiter, affect nerve function and fur color quality and feed digestion and absorption, and eventually lead to slow growth and development
Soluble in water, absorbs heat when dissolved. The solubility in 100g water is 127.5g (0℃), 144g (20℃), 208g (100℃). It turns yellow when exposed to wet air and carbon dioxide decomposes. Soluble in methanol, ethanol and glycerol. Iodine is readily soluble in an aqueous solution of potassium iodide. It is reductive and can be oxidized by hypochlorite, nitrite and ferric ion and other oxidants to precipitate free iodine. See light decomposition, so it should be stored in a sealed and cool place. In addition to being used for medicine and photography, it is also used as an analytical reagent.

Water solubility 1.43 kg/L
Computational chemistry
1. Reference value for calculating hydrophobic parameters (XlogP) : None

2. Number of hydrogen bond donors :0

3. Number of hydrogen bond receptors :1

4. Number of rotatable chemical bonds :0

5. Number of tautomers: None

6. Topological molecular polar surface area 0

7. Number of heavy atoms :2

8. Surface charge :0

9. Complexity :2

10. Number of isotope atoms :0

11. Determine the number of protonic centers :0

12. Number of uncertain atomic stereocentes :0

13. Determine the number of chemical bond structure centers :0

14. Number of uncertain chemical bond stereocenter :0

15. Number of covalent bond units :2

more
1. Properties: Colorless crystal, cubic crystal system. Odorless, with a strong, salty taste.

2. Density (g/mL 25ºC) : 3.13

3. Relative vapor density (g/mL, air =1) : not determined

4. Melting point (ºC) : 681

5. Boiling point (ºC, atmospheric pressure) : 1420

6. Boiling point (ºC,5.2kPa) : not determined

7. Refractive index (n20/D) : 1.677

8. Flash point (ºC,) : 1330

9. Specific rotation (º) : - Not determined

10. Spontaneous ignition point or ignition temperature (ºC) : not determined

11. Vapor pressure (kPa,25ºC) : 0.31 mm Hg

12. Saturated vapor pressure (kPa,60ºC) : not determined

13. Heat of combustion (KJ/mol) : not determined

14. Critical temperature (ºC) : not determined

15. Critical pressure (KPa) : not determined

16. The value of oil-water (octanol/water) partition coefficient (25℃) : not determined

17. Upper explosion limit (%,V/V) : not determined

18. Lower explosive limit (%,V/V) : not determined

19. Solubility: easy deliquescence in wet air. When exposed to light and air, free iodine can be precipitated and yellow, which is more likely to turn yellow in acidic aqueous solutions. Soluble in water, significantly absorb heat when dissolved, soluble in ethanol, acetone, methanol, glycerol and liquid hydrogen, slightly soluble in ether.