POTASSIUM METABISULFITE CAS16731-55-8

Details:

Density 2.34g /cm3

Melting point 190ºC

Molecular formula K2O5S2

Molecular weight 222.32400

Accurate mass 221.84600

PSA 124.92000

LogP 0.27220

Appearance character slightly yellow crystalline powder

Storage condition

1. Should be stored in a cool, ventilated, dry and clean storeroom, pay attention to moisture.

 

2. Shall not be stored and transported with acids, oxidants and toxic substances. Be protected from rain and hot sun during transportation. Handle with care during loading and unloading to avoid damage to the packing.

 

3 fire, water, sand and a variety of fire extinguishers.

 

stability

1. Oxidizes slowly to potassium sulfate in air, and oxidizes faster in wet air. Contact with acid releases a highly irritating sulfur dioxide gas. It shows strong reducibility. When heated to 190 ℃ decomposition, grinding into powder can burn when hot. Dissolve in water. Slightly soluble in alcohol. Insoluble in ether. Acid decomposes to form sulfur dioxide. Soluble in water, slightly soluble in ethanol, insoluble in ether. Potassium metabisulfite is stable in dry air and releases sulfur dioxide easily in moist air. An aqueous solution can be oxidized to potassium sulfate by air.

 

 

Water solubility H2O: 0.1M at 20 °C, clear, colorless

Computational chemistry

1. Reference value for calculating hydrophobic parameters (XlogP) : None

 

2. Number of hydrogen bond donors :0

 

3. Number of hydrogen bond receptors :6

 

4. Number of rotatable bonds :0

 

5. Number of tautomers: None

 

6. Topological molecular polar surface area 125

 

7. Number of heavy atoms :9

 

8. Surface charge :0

 

9. Complexity :136

 

10. Number of isotope atoms :0

 

11. Determine the number of primary constitutive centers :0

 

12. Number of indeterminate atomic orthotropic centers :0

 

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

 

14. Number of uncertain bond constitutive centers :0

 

15. Number of covalent bond units :3