| 41. | Black powder is a mixture of potassium nitrate _ also called saltpeter _ charcoal, sulfur and water.
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| 42. | When potassium nitrate improved the quality of gunpowder, ships at sea adopted the salute of 21 guns.
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| 43. | Potassium nitrate is moderately soluble in water, but its solubility increases with temperature ( see infobox ).
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| 44. | The potassium nitrate should be impalpable dust.
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| 45. | From 650?to 750? as the case of decomposition of potassium nitrate is, the system attains equilibrium.
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| 46. | In technology, the Muslim world adopted papermaking from China . where formulas for pure potassium nitrate were developed.
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| 47. | Two main issues need to be addressed with respect to the oxidizer if one is using potassium nitrate.
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| 48. | Haifa Chemicals is the world's largest producer of potassium nitrate which is mainly used for fertilizers, Greenpeace said.
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| 49. | Minera Yolanda plans to start producing sodium nitrate, iodine and potassium nitrate, Soquimich's three principal products, in September.
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| 50. | But the ship's cargo of potentially flammable potassium nitrate fertilizer could pose a health and environmental hazard, he said.
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