Bluebloomer
Well-known member
Hi all, I bought some SnCl2 crystals 99,8% from a chemical store. I tried to dissolve a few grams of the crystals in 35% HCL. I heated the solution before adding the crystals. When the crystals all dissolved I added some more until noting dissolved anymore, only a few crystals remain on he bottom of the beaker.
Once the liquid cooled down, I had a huge pile of crystals on the bottom of the beaker. It looks like the HCL dissolved the crystals when hot, but most of the crystals reprecipitated when cooled down. How is this possible, and what is going wrong ?
I thought it was straight forward to dissolve some of the crystals in HCL and have a ready to go stannous chloride testing solution, but this liquid is not showing a positive for gold.
Also, I wanted to melt some tin figurines and pour it into shot so I can add it to the stannous chloride, but first I have to know (and understand) what is going wrong. Can anybody explain it ?
Once the liquid cooled down, I had a huge pile of crystals on the bottom of the beaker. It looks like the HCL dissolved the crystals when hot, but most of the crystals reprecipitated when cooled down. How is this possible, and what is going wrong ?
I thought it was straight forward to dissolve some of the crystals in HCL and have a ready to go stannous chloride testing solution, but this liquid is not showing a positive for gold.
Also, I wanted to melt some tin figurines and pour it into shot so I can add it to the stannous chloride, but first I have to know (and understand) what is going wrong. Can anybody explain it ?