Potassium Nitrate

– Product Identification
CAS No. : 7757-79-1
EINECS No. : 231-818-8
Formula : KNO3
Molecular Weight : 101.1
H.S. Code : 2834.2190
Toxicity : Oral rat LD50: 3750 mg/kg
Synonyms : Nitre; Nitric Acid Potassium Salt; Saltpeter; Vicknite; Kalii Nitras; Kaliumnitrat (German); Nitrate Of Potash; Kaliumnitrat (Dutch); Nitrato de potasio (Spanish); Nitrate de potassium (French)

– Physical And Chemical Properties
Physical State : Colorless and transparent rhombic crystals or white powder
Melting Point : 334oC
Boiling Point : (Decomposes at 400 oC)
Specific Gravity : 2.11
Solubility In Water : soluble
Vapor Density : 3.0
NFPA Rating : Health: 2; Flammability: 0; Reactivity: 0 Special Hazard: OX
Flash Point : Not combustible, but substance is a strong oxidizer
Stability : Stable under ordinary conditions

– Applications
 Industrial Grade
– Used as the raw material of Fireworks to produce Purple Flame, Black Powder in Mining,
Fuse (Ignition Wire) and Firecracker.
– Used for Heat Transfer Salts, Heat Treatment Salt Bath, production of Cigarette Paper.
– Used as Catalyst and Mineral Processing Agent, Ceramic Glaze and Enamel.
– Used as Color Fixative and Preservative.
 Optical Glass Grade
– Used as Glass Refining Agent and for the production of Auto Lamp Glass, Optical Glass,
Cell Phone and Computer Touch Screen, Clock Glass, TV Kinescope Glass.
 Agriculture Grade
– Increase yield, improve quality, accelerate the ripening, enhance disease resistance,
Prolong the shelf life.
– Widely used in various grain crop, economic crop, as base fertilizer or additional fertilizer,
Foliar fertilizer, cultivation without soil, especially suitable for tobacco, fruit crops.

– Specification (Industrial Grade)
Testing Items/ Quality Standard (First Class) GB/T 1918-2011 / Quality Standard
Appearance : White Powder / White Powder
Purity : 99.4% Min / 99.7% Min
Moisture : 0.10% Max / 0.10% Max
Chloride (as Cl) : 0.02% Max / 0.01% Max
Water Insoluble : 0.02% Max / ——–
Sulphate (as SO4) : 0.01% Max / 0.005% Max
Hygroscopicity : 0.30% Max / ——–
K2CO3 : ——– / 0.01% Max
PH : 6 / 6.5-8
Particle Size : 80 -100MESH / 30-80MESH (200-500UM)

– Specification (Optical Glass Grade)
Testing Items / Quality Standard / Reference Testing Results
Appearance : White Crystal / White Crystal
Purity : 99.80% Min / 99.92%
Moisture : 0.06% Max / 0.028%
K2CO3 : 0.01% Max / 0.005%
Sulphate (as SO42-) : 0.005% Max / 0.005%
Chloride (as Cl) : 0.005% Max / 0.0035%
Water Insoluble : 0.01% Max / 0.003%
Fe : 0.002% Max / 0.002%
Natrium (Na) : 0.01% Max / 0.008%
Particle Size : 30-80MESH (200-500UM) / Conforms

– Transportation
Storage : Stored in cool, ventilated and dry warehouse.
Packing : In 25kgs net PP woven bags or 1200Kgs Jumbo Bags.
Hazard Class : 5.1 (Packing Group: III)
Un No. : 1486