tin chloride

[RosalieM]

I was preparing a prac for a yr 11 student and it required some tin chloride. The instructions for the preparation of this said to dissolve it in glycerine. Is this the standard way to dissolve tin chloride? I know when I make it up with distilled water it doesn't last very long. And if this is the case, do you just use a small amount to dissolve it then make it up to the required amount with water? (Like when you dissolve something in ethanol and then make up with water?) Or do you just use glycerine and have a really thick solution? It would be good to not have to make tin chloride up fresh every time it is needed. We seem to waste a bit because it isn't used very often and I make up too much.

[Ocker]

All my receipes just say dissolve in water, 0.5M=94.5g/litre

[Labbie]

The Laboratory book says the same as Orcker. You could half the amount, and only make up 500ml instead of 1 litre.

[Robb]

Hi All,

I can see the relevance in you question, Tin (II) Compounds are instable in aqueous solutions, if you need an immediate use then this won't be an issue.

Dissolving the Tin (II) Chloride in Glycerol is feasable, I have done it in the past and is certainly one method of dissolution.

Note: If you plan on storing the solution then, as mentioned above, Glycerol will have to be used. In water Tin will become unstable in ionic form and precipitate out.

Hope this answers your question better..

Cheers,

Robb.....

[Ocker]

Hey! Dr Bob
Whats the point if unstable in glycerol as well
just mix 9.5 g in 100ml

[lada]

I have used tin chloride in glycerol and it lasted for ages.
Good luck
Lada

[Robb]

Hi All,

Tin (II) is only unstable when in aqueous solutions, (Water). What I meant was that the Glycerol doesn't allow for any dissolution of ions, it keeps the tin stable in its natural form.

I will correct my previous post to help with the explanation.

Thanks Ocker for finding this...

Cheers,

Robb.....

[Lyn]

I have a recipe for Tin (II) Chloride 0.25M
Add 56g to 100ml of concentrated hydrochloric acid then make up to 1 litre with distilled water. Add a few pieces of tin to the stock bottle to preserve the solution.

Recipe was sourced from two different lab manuals. Can someone provide the recipe which uses glycerol please so I can add it to my resource book.
Thanks, Lyn.

[Labbie]

Please do a search for Tin II Chloride, their was a thread before, with some very good information. I thought we had gone down this road before.

[rae]

Just looked at this previous thread and there was no information on using glycerol.
I would be interested in this recipe too!!

Thanks Lorrae

[Labbie]

True, no more information on Glycerol, but the pieces of Tin were most interesting.

[RosalieM]

The glycerol one I had was just to add however much tin chloride you want to glycerol instead of water. Then heat gently to aid in dissolving.

[RosalieM]

After obtaining all this useful information, I decided to wait until right before the lesson to make the tin chloride with water so it was at its best. I knew the teacher had some talking to do at the beginning of the lesson so it was going to be ok. Then, when he came along, I said "Here's everything - I'm just about to make up the tin chloride". To which he relied "oh, all these ones will be enough, don't worry about it". So, after all that discussion I didn't even need to make it! At least now I know tin chloride can be stored in glycerine if I need it for next time!
Rosalie