POTASSIUM NITRATE
POTASSIUM NITRATE AR
Confirms to BP, USP
Short Name: POTASSIUM NITRATE
Synonym: Saltpetre, Nitrate of potash
Basic Details
Article No.
LG3744
Grade
AR
Purity
99%
CAS No.
7757-79-1
HS Code
2834.2100
Shelf Life
60 Months
Packings Avialable
Physical Properties
Physical state at 20 °C
Solid
Colour
White crystalline
Odour
Odorless
pH value
5.5 - 8.0
Melting point/ Freezing point [°C]
334 °C
Boiling point [°C]
400°C
Vapour density
3
Density [g/cm3]
2.109
Solubility in water [% weight]
36 gm/l00 ml water
Chemical Specifications
Appearance
White crystalline powder
Assay (as KNO3)
99 - 100.5%
Identity (acc. to pharmacopoeias)
Passes test
Appearance of solution
Passes test
Reducing substance
Passes test
pH (5% solution in water; 20°C)
4.5 - 8.5
Acidity or alkalinity
Passes test
Chloride (Cl)
Max 0.001%
Chlorate and perchlorate (as Cl)
Passes test
Sulphate (SO4)
Max 0.003%
Phosphate (PO4)
Max 0.0005%
Lead (Pb)
Max 0.0005%
Arsenic (As)
Max 0.0003%
Iron (Fe)
Max 0.0003%
Calcium (Ca)
Max 0.001%
Sodium (Na)
Max 0.02%
Ammonium (NH4)
Max 0.001%
Iodate (IO3)
Max 0.0005%
Nitrite (NO2)
Max 0.0005%
Loss on drying (at 105°C)
Max 0.5%
Safety Information & Hazard Symbols
Symbol
GHS03
Signal Word
Warning
UN No.
1486
IMCO Class No.
5.1
Packing Group
III
Hazardous Statement
H272
Precaution Statement
P220