乃们要的DIY方法来了
2.5 g potassium nitrate (硝酸钾)
2.5 g ammonium chloride (氯化铵)
33 ml distilled water (蒸馏水)
40 ml ethanol (乙醇)
10 g camphor (樟脑)
Warm the water and dissolve the potassium nitrate and ammonium chloride; add the ethanol; add the camphor. Place in corked test tube.
加热水后放硝酸钾和氯化铵搅拌溶解,添加乙醇,添加樟脑,放到玻璃瓶中,结束
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