Distilling Sulfuric Acid with Some Mishaps
19:30
Sulfonation: p-Toluenesulfonic Acid
19:53
Purification of Sulfuric Acid by Distillation - Revisited
16:34
Distillation
32:32
Hydrazine Sulfate: GB1153483
19:00
Purifying Sulfuric Acid Drain Cleaner
31:47
Dissolving $1000 of Platinum to Make $6000 of Chloroplatinic Acid for Professional Use
21:27
Hydrogen Peroxide: going all the way
22:30