Gunpowder components. Sulphur (yellow),carbon (black) and saltpetre (potassium nitrate,white) in the correct proportions to make gunpowder. Saltpetre-based explosives date back thousands of years to ancient China. Modern gunpowder,in the proportions shown here,is first recorded from the 17th century. The proportions commonly used are saltpetre:carbon:sulphur (15:3:2) | |
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