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POTASSIUM NITRATE AR

Confirms to BP, USP
Saltpetre, Nitrate of potash

Restricted for Export (Under Scomet)  
COAs

Packings

500 g (00500)

1PW1200500
Print friendly version
Article No. 05400 Grade AR
Purity 99% CAS No. 7757-79-1
Molecular Formula KNO3 Molecular Weight 101.11
H.S. Code 2834.2100 Shelf Life 60 Months

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

Specifications

Appearance White crystalline powder Assay (Titration after Ion exchange) 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 and Hazard Symbols

Flame Over Circle
Symbol: GHS03
 Signal Word: Warning
 UN No.: 1486
 IMCO Class No.: 5.1
 Packing Group: III
 Hazardous Statement: H272
 Precaution Statement: P220
Revision Date: 18-Apr-2023

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