Calcium carbide
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Industrial products is gray, snuff color or black solid, containing higher of calcium carbide is purple. This product is lumpy substance, its surface is a little deep gray, has slight nasty smell. It can produce acetylene gas when met water, it can burn when meets fire. The acetylene gas mix with air will form explosive gas (explosive range of acetylene gas in the air is 2.3% - 81%).
Uses:
1. reacting with water to bring ethine.
2. reacting with nitrogen to produce lime nitrogen.
3. using in the desulfurizer in steel industry.