Potassium Nitrate of HHHTech
Potassium nitrate is a chemical compound with the formula KNO3. It occurs as a mineral niter and is a natural solid source of nitrogen. Its common names include saltpeter。Potassium Nitrate is colorless and transparent rhombic crystals or white powder. The relative density is 2.109 and the melting point is at 334°C. It decomposes at 400°C and turns into potassium nitrite releasing oxygen and then in continuous heat turns into burnt potash. It is highly soluble in water, liquid ammonia and glycerin but insoluble in anhydrous alcohol and diethyl ether. It can not deliquesce in the air. As strong oxidizer, it will burn and explode when meeting with organics releasing irritant gas. If mixed with carbon powder or sulfur, it burns with strong light.
Identifiers / MSDS of Potassium Nitrate
| Other names: Saltpeter, Nitrate of potash | CAS number: 7757-79-1 | Appearance: white solid | Boiling point:400 °C decomp. |
| RTECS number: TT3700000 | Pub Chem: 24434 | Odor: odorless | Solubility in water:133 g/L (0 °C) |
| Molecular formula: KNO3 | ChemSpider: 22843 | Density:2.109 g/cm3 (16 °C) | Solubility slightly: soluble in ethanol |
| Molar mass: 101.103 g/mol | UN number: 1486 | Melting point:334 °C | soluble in glycerol, ammonia |
Specifications of Potassium Nitrate
Inspection Item |
Unit |
Optical Grade. |
Ind.Grade. |
Agri.Grade. |
Ceramic Grade. |
Food
Grade |
Prilled. Grade. |
Assay(KNO3) |
% |
99.9 |
99.8 |
98 |
96 |
99.2 |
99.5 |
Moisture |
% |
0.10 |
0.10 |
0.10 |
0.10 |
0.2 |
0.2 |
Chlorides |
% |
0.01 |
0.03 |
0.03 |
0.08 |
--- |
0.005 |
Water-insolubles |
% |
0.01 |
0.01 |
0.01 |
0.15 |
--- |
--- |
Sulphates |
% |
0.005 |
0.01 |
--- |
--- |
--- |
0.1 |
Iron |
% |
0.002 |
0.01 |
--- |
0.003 |
10ppm |
--- |
Potassium oxide |
% |
--- |
--- |
46.0 |
44 |
--- |
--- |
Nitrogen |
% |
--- |
--- |
13.5 |
13.5 |
--- |
--- |
Sodium |
% |
--- |
--- |
--- |
0.007 |
--- |
--- |
Sodium Oxide |
% |
--- |
--- |
--- |
0.01 |
--- |
--- |
Sodium Nitrate |
% |
--- |
--- |
--- |
--- |
--- |
0.2 |
Usage of Potassium Nitrate
Potassium nitrate is mainly used in fertilizer and foliar spray fertilizer for crop and flower;, as a source of nitrogen and potassium – two of the macro nutrients for plants. When used by itself, it has an NPK rating of 13-0-44. It is also added to pre-rolled cigarettes to maintain an even burn of the tobacco。Potassium nitrate is the main component (usually about 98%) of tree stump remover, as it accelerates the natural decomposition of the stump. It is also commonly used in the heat treatment of metals as a solvent in the post-wash. The oxidizing, water solubility and low cost make it an ideal short-term rust inhibitor.
Potassium nitrate is also one of the three components of black powder, along with powdered charcoal (substantially carbon) and sulfur, where it acts as an oxidizer. Potassium nitrate is an efficient oxidizer, which produces a lilac flame upon burning due to the presence of potassium. It is therefore used in amateur rocket propellants and in several fireworks such as smoke bombs。
In the process of food preservation, potassium nitrate has been a common ingredient of salted meat since the Middle Ages， but its use has been mostly discontinued due to inconsistent results compared to more modern nitrate and nitrite compounds. Even so, saltpeter is still used in some food applications, such as charcuterie and the brine used to make corned beef. Sodium nitrate (and nitrite) have mostly supplanted potassium nitrate's culinary usage, as they are more reliable in preventing bacterial infection than saltpeter. All three give cured salami and corned beef their characteristic pink hue.
Potassium nitrate is also mainly applied in TV kinescope glass, glass refining agent and motor light glass;Potassium nitrate is also used in drugs as penicillin potassium salt in medicine industry and catalyze; ceramic and enamel; salt bath of heat treatment, cigarette paper, concentrating agent; conservatives in salted meat and chromate in Food industry, etc.
Package and storyage of Potassium Nitrate
Packing: Plastic woven bag or Kraft paper bag inner with plastic bag in 2 0/25/50/500/1000kg net.
Industrial Grade (GB/T1918-1998)
Storage: Store in a cool, ventilated and dry house, away from moisture,
heat or kindling. Avoid mixing with organic compound or sulphur or reducer during storage and transportation in case of explosion. Protect the material from the sun and rain during transportation. Carefully load and unload in case of crash. |
