Potassium Nitrate FG 25kg Bag
£99.00
(QTY 10-20)
£95.00
(QTY 25+)
£90
Quantity discounts available
| 1-5 | 10-20 | 25+ |
|---|---|---|
| £99.00 | £95.00 | £90.00 |
£99.00 each
Potassium Nitrate Food Grade 25kg Potassium nitrate is a chemical compound with the chemical formula KNO3. It is an ionic salt of potassium ions K+ and nitrate ions NO3− and is therefore an alkali metal nitrate. It occurs in nature as a mineral, nitre. It is a source of nitrogen, and nitrogen was named after nitre. Potassium nitrate is one of several nitrogen-containing compounds collectively referred to as saltpetre. Potassium Nitrate Food Grade 25kg has an orthorhombic crystal structure at room temperature, which transforms to a trigonal system at 129 °C (264 °F). Potassium nitrate is moderately soluble in water, but its solubility increases with temperature. The aqueous solution is almost neutral, exhibiting pH 6.2 at 14 °C (57 °F) for a 10% solution of commercial powder. It is not very hygroscopic, absorbing about 0.03% water in 80% relative humidity over 50 days. It is insoluble in alcohol and is not poisonous; it can react explosively with reducing agents, but it is not explosive on its own. In meat processing, potassium nitrate is still used in some food applications, such as salami, dry-cured ham, charcuterie, and (in some countries) in the brine used to make corned beef (sometimes together with sodium nitrite). When used as a food additive in the European Union, the compound is referred to as E252. Please click here to view our delivery information and costs.
Uses and applications
Potassium nitrate (KNO3, saltpetre) is supplied here as a food grade crystalline powder in 25kg bags.
- Food curing — permitted preservative E252 for cured meats
- Horticulture — a high-analysis potassium and nitrogen feed for fruiting and flowering crops
- Glass and ceramics manufacture
- Heat-treatment and other technical applications
Specification and pack sizes
Food grade, minimum 99% purity, free-flowing crystalline form. Supplied in 25kg bags; pallet quantities available at trade rates with documentation for food-industry buyers.
Handling and safety
Potassium nitrate is an oxidiser: store it away from combustible materials, fuels and acids, in a cool, dry, well-ventilated area, and keep bags sealed. Avoid breathing dust. Full SDS supplied on request.
Frequently asked questions
Is this potassium nitrate food grade?
Yes — this is food grade KNO3 suitable for curing applications as preservative E252, with certificates available on request.
Can I use potassium nitrate as a fertiliser?
Yes. KNO3 is a classic 13-0-46 feed: fully soluble potassium and nitrate nitrogen, ideal for fertigation and foliar feeding of fruiting crops and glasshouse growing.
How should potassium nitrate be stored?
Cool, dry and separated from combustibles and acids. It is not flammable itself, but as an oxidiser it intensifies fire in other materials.