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Calciumphosphate solubility


dangerousamateur

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Hi,

 

can you give me a hint how much more calciumphosphate becomes soluble when I heat the solution?

 

I just dissolved some perchlorate and since you mostly find 1,5g/100ml water, I put 3g perchlorate in 250ml cold destilled water.

 

First I had a little white stuff on the ground, but after a little heating and stirring it disappeared completely. Now nothing remains - everything is in solution!

 

I suspect there is some calciumphosphate in there, but I cannot find insoluble material.

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Hi,

can you give me a hint how much more calciumphosphate becomes soluble when I heat the solution?

I just dissolved some perchlorate and since you mostly find 1,5g/100ml water, I put 3g perchlorate in 250ml cold destilled water.

First I had a little white stuff on the ground, but after a little heating and stirring it disappeared completely. Now nothing remains - everything is in solution!

I suspect there is some calciumphosphate in there, but I cannot find insoluble material.

 

By perchlorate, do you mean potassium or ammonium? If potassium I don't believe there's any. If you mean ammonium, a very small amount of tricalcium phosphate is used as a free flow agent in MIL-SPEC material.

 

WSM

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Potassium Perchlorate.

 

I thought there must be some anticake in there since it's very nice to handle. Sieve it once with a tea strainer and its airfloat.

 

Now its about 15° Celsius again, still nothing at the bottom.

 

Must be pretty good stuff then?

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