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Molecular formula: KNO3
Molecular weight: 101.10
Performance: It is colorless rhomboidal crystal or powder particle. Relative density is 2.1109; melting point is 333℃. It resolves and emits oxygen at 400℃ and become potassium nitrite. It is soluble in water(0℃, 13.3g/100gH2O;30℃, 45.8g/100H2O;100℃, 246.0g/100gH2O), insoluble in alcohol, soluble in liquid ammonia and glycerol.
Industrial use: it is raw material for the production of black powder, ignition harness and fireworks; it is used as salt bath in mechanical heat treatment; used to produce color ceramic glaze, glass refining agent, lens, optical glass, kinescope glass and etc. It is also be used to produce Penicilline potassium salt, as color former and preservative for meat product.
Executive Standard : national standard GB/T 1918-2011.
|
specification inspection item |
Unit |
industrial grade (GB/T1918-2011) |
||
|
|
|
high-class product |
top quality product |
qualified product |
|
content |
% ≥ |
99.7 |
99.4 |
99.0 |
|
moisture |
% ≤ |
0.10 |
0.20 |
0.30 |
|
chloride(in Clˉ) |
% ≤ |
0.01 |
0.02 |
0.10 |
|
water insoluble |
% ≤ |
0.01 |
0.02 |
0.05 |
|
sulfate(in SO4ˉ) |
% ≤ |
0.005 |
0.01 |
— |
|
moisture rate |
% ≤ |
0.25 |
0.30 |
— |
|
Ferrum(Fe) |
% ≤ |
0.003 |
— |
— |
Packing: plastic woven bag or paper-plastic compound bag, inner plastic bag；polythelene bag, net weight is 25／50KG.
Protection: Please wear respirator to avoid Potassium nitrate dust inhalation to protect respiratory organ; and please wear work clothes and latex gloves to protect skin.
Storage: in dry, cool and ventilated warehouse, be away from heat and fire source. The temperature should not over 30℃, and relative humidity should less than 80%. In addition, it should separate from reducing agent, acids,
Inflammable matters and reactive metal powder.