Field of Fireworks
Gunpowder and all kinds of fireworks effects
Product application: Used as raw materials for flames, black powder, fuse wires, firecrackers, etc. The medical industry uses it for the production of potassium penicillin, rifampicin and other drugs. It is also used in the production of mosquito coils, cigarette paper, food colorants and preservatives, and glass clarifiers.
Product packaging: 25/50KG plastic woven bags, paper-plastic composite bags. Customized packaging is also available upon customer request.
Potassium Nitrate for Fireworks and Pyrotechnic Applications
Usage: The key raw material of black powder, and also the necessary raw material for the production of fireworks, fuses and firecrackers.Product packaging: 25/50KG plastic woven bags, paper-plastic composite bags. Customized packaging is also available upon customer request.
Potassium nitrate (KNO₃), as an indispensable oxidizing agent in pyrotechnic compositions, plays a crucial role in pyrotechnic materials, especially in flares, fireworks, fuses and black powder. Its unique chemical and physical properties make it indispensable in the following applications:
The main features that can be used for fireworks:
Oxidizing power: Potassium nitrate decomposes at high temperatures (melting point: 334°C), releasing oxygen. Oxygen rapidly promotes the combustion of fuels such as sulfur or charcoal, generating intense heat, light and gas expansion.
Energy release and stability: Its crystalline/granular form (white, slightly hygroscopic) ensures uniform mixing with fuel. After being ignited, it can achieve controllable and predictable reactions, which is crucial for timed explosions or colored flames.
Cold burning characteristics: The flame temperature produced by KNO₃ is relatively low, which can reduce the risk of accidental ignition while maintaining a bright visual effect.
| Project | Indicator | ||||
| IClass | Ⅱ Class | ⅢClass | |||
| IType | Ⅱ Type | ||||
| Potassium Nitrate (KNO₃) (on a dry basis) w/% ≥ | 99.8 | 99.6 | 99.4 | 98.5 | |
| Water Content w / % ≤ | 0.10 | 0.10 | 0.15 | 0.10 | |
| Water-insoluble Matter w/% ≤ | 0.01 | 0.01 | 0.03 | 0.02 | |
| Chloride (as Cl) w/% ≤ | 0.01 | 0.02 | 0.02 | 0.02 | |
| Sulfate (in SO₄) w/% ≤ | 0.005 | 0.005 | 0.01 | 0.01 | |
| Carbonate (as CO₃) w/% ≤ | 0.01 | 0.01 | 0.01 | 0.45 | |
| Ammonium Salt (measured in NH₄) w% ≤ | 0.02 | 0.07 | 一 | 一 | |
| Moisture Absorption Rate w/% ≤ | 一 | 0.20 | 0.25 | 一 | |
| Looseness (through a 4.75mm test sieve) w/% ≥ | 一 | 一 | 一 | 95 | |
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FAQ
Q: Why is potassium nitrate widely used in black powder formulations?
A: Potassium nitrate ensures stable and predictable combustion in black powder. Its uniform particle structure allows even mixing with other components, resulting in consistent ignition and reliable performance.
Q: How does potassium nitrate affect safety in fireworks production?
A: Compared with some other oxidizers, potassium nitrate burns at a relatively lower flame temperature. This “cold burning” characteristic helps reduce accidental ignition risks while still providing bright visual effects.
Q: What quality requirements are important for fireworks-grade potassium nitrate?
A: Fireworks applications require potassium nitrate with good purity, low moisture content, and consistent particle size to ensure stable reactions, safe handling, and uniform pyrotechnic performance.
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