Stannous Chloride

[jimdoc]

i have a similar problem , i bought stannous chloride from my chemical supplier and it came in crystal form , how do i make it into asolution to test for the presence of gold in my AR

http://goldrefiningforum.com/phpBB3/viewtopic.php?f=48&t=2082&p=17541&hilit=stannous#p17541

 

[marlyn]

Would it work, if I use stannous chloride and muriatic acid only (without metalic tin) ? :shock:

 

[FrugalRefiner]

marlyn, I answered you in your other post. Please don't double post.

Dave

 

[marlyn]

marlyn, I answered you in your other post. Please don't double post.

Dave

Sorry for that Dave,
I found other post more appropriate, therefore I wrote it again there. I did not find the way how to delete my post from this thread after... :|

 

[salman1122]

hello guys.
i have stannous chloride (SnCl2 ) in crystal form . i wanna prepare stannous chloride solution for gold testing . can you tell me how to prepare solution? thanks.

 

[jimdoc]

hello guys.
i have stannous chloride (SnCl2 ) in crystal form . i wanna prepare stannous chloride solution for gold testing . can you tell me how to prepare solution? thanks.

http://goldrefiningforum.com/phpBB3/viewtopic.php?f=48&t=2082&p=17541&hilit=stannous#p17541

 

[salman1122]

thanks bro. it helped . it says you have to put some solid tin the solution to keep it fresh and in dynamic equilibrium . i dont have tin metal . i put 1g of sncl4 in 13ml of hcl and i became milky . after heating solution become clear then i stored it. would it work without tin?

 

[FrugalRefiner]

would it work without tin?

Yes, it will work without the tin, but it won't last as long. The stannous chloride eventually oxidizes to stannic chloride. When it stops giving a positive reaction, make a new batch.

Dave

 

[g_axelsson]

thanks bro. it helped . it says you have to put some solid tin the solution to keep it fresh and in dynamic equilibrium . i dont have tin metal . i put 1g of sncl4 in 13ml of hcl and i became milky . after heating solution become clear then i stored it. would it work without tin?

SnCl₄ is stannic chloride
SnCl₂ is stannous chloride, this is what is used for detecting gold in solution.
https://en.wikipedia.org/wiki/Tin_chloride

I don't know if mixing SnCl₄ with HCl is creating SnCl₂ or not.

Göran

 

[salman1122]

sorry. i forgot the formula of stannous chloride .sncl4 in solid form is called butter of tin (yummy name ) .by the way it worked . thank a lot guys for the help.

 

[Worms4u]

I am making my first batch of Stannous Chloride, and I am wondering something. Should I continue to add small portions of tin until there is no reaction left from the HCL, or is it OK if there is still some active HCL in the solution?

 

[g_axelsson]

I am making my first batch of Stannous Chloride, and I am wondering something. Should I continue to add small portions of tin until there is no reaction left from the HCL, or is it OK if there is still some active HCL in the solution?

A bit of excess HCl doesn't hurt the reaction but if you have some tin left over in the bottle then the stannous holds better and doesn't go bad as fast as if you have excess HCl. So the recommendation is to add more tin until there is no reaction and not filter off the tin.

Göran

 

[FrugalRefiner]

Always keep some undissolved tin in your stannous. Stannous chloride (SnCl₂) oxidizes to become stannic chloride (SnCl₄), but stannic chloride reacts with tin to create more stannous chloride. 8)

Dave