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Potassium Nitrate

Potassium nitrate is a chemical compound with the formula KNO3. It is an ionic salt of potassium ions K+ and nitrate ions NO3−.

It occurs as a mineral niter and is a natural solid source of nitrogen. Potassium nitrate is one of several nitrogen-containing compounds collectively referred to as saltpeter or saltpetre.

Major uses of potassium nitrate are in fertilizers, rocket propellants and fireworks. It is one of the major constituents of gunpowder (blackpowder) and has been used since the Middle Ages as a food preservative

Specification:

Identifiers

SKU:D***1

CAS number: ********1

UN number:***6

HS Code(US):
***4.*1.***0
HS Code(CN):
***4.*1.***0 (Agriculture Grade)                          ***4.*1.***0 (Industry Grade)

Properties

Molecular formula: KNO3

Molar Mass: **1.***2g/mol

Appearance: white solid

Odor: odorless

Density: 2.**9 g/cm3(*6°C)

Melting Point: **4 °C

Boiling Point: decomposes at **0 °C

Solubility in Water:

**3 g/L (0 °C)
**6 g/L (*0 °C)
***0 g/L (**0 °C)

Items                 Spec

Industrial Grade

Green House Grade

Purity

% ≥

*9.8

*8.0

Moisture

% ≤

0.*0

0.*0

Chloride(as Cl- )

% ≤

0.***0.*3

0.8

Insoluble matter in water

% ≤

0.*1

0.*1

Sulphate(as SO4*-)

% ≤

0.*1

Hygroscopicity

% ≤

0.*5

Iron(Fe)

% ≤

0.**3

K2O

 % ≥

*4

Nitrogen( inNitrate)

 % ≥

*3.5

Standard

GB******2

GB********8

Particle Size(mm)

Crystal Power,0.**2.5 , **3 , **5 , 0.**5

Protection

Operators should wear protective smock including respirator and rubber gloves, etc. Be careful not to inhale the powder of potassium nitrate to protect respiration apparatus.

Packing  and Storage

Plastic woven bag or kraft paper bag inner with plastic bag in *0/*5/*0/**0/ ***0kg net. 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

Applications

Potassium nitrate has a wide variety of uses, largely as a source of nitrate.

Fertilizer

Potassium nitrate is mainly used in fertilizers, as a source of nitrogen and potassium two of the macronutrients for plants. When used by itself, it has an NPK rating of ******4.

Oxidizer

Potassium nitrate is an efficient oxidizer, producing a lilac-colored flame upon burning due to the presence of potassium. It is one of the three components of black powder, along with powdered charcoal (substantially carbon) and sulfur, both of which act as fuels in this composition. As such it is used in black powder rocket motors, but also in combination with other fuels like sugars in "rocket candy". It is also used in fireworks such as smoke bombs, made with a mixture of sucrose and potassium nitrate. It is also added to cigarettes to maintain an even burn of the tobacco and is used to ensure complete combustion of paper cartridges for cap and b