Iridium

[ashir]

Ashir, the large amount is suspected of having not noble ingredients. Re-dissolve a part and precipitate with less active reducer

Thanks it's looking like iron, I will keep you inform as zinc cementation complete
And having trouble to get oxon, khso4 can be used instead of khso5?

 

[Lino1406]

KHSO4 works at 500C in the fusion method

 

[ashir]

Thanks, we have to stop further processes until oxone is avail.
Zinc cemented black pgm,
nitric= negative for PD(not checked for silver yet)
Aqua regia = precipitate yellow PT salt.
Resedue =stopped for oxone
Sulfuric = precipitate black powder but still under process as acid is not clear
Will post pics

 

[Lino1406]

1.Sediment from sulfuric acid may include palladium and silver, worthwhile to check
2.If iridium is present you shall find it even before oxone application, same for Rh

 

[anachronism]

Yep you can't miss Rhodium Sulphate.

 

[ashir]

We stop further process until oxone shipped!
It can be present in AR , but we cemented everything from AR with zinc, and residue from zinc cementation is most likely be IR, we will practice it first with oxone,

 

[Lino1406]

Got any greenish chloroiridite to confirm iridium?

 

[zubr]

Hello ! Please tell me - what color is iridium with tin chloride

 

[butcher]

zubr,
I do not know of a test to determine iridium with stannous chloride, iridium is hard to get into a solution.

 

[zubr]

Thanks !!!! I'm stupid ... you really helped me

 

[Lino1406]

Despite the difficulty, as chlorides play the initial stage in stannous chloride test, with
IrCl3 = olive green should be present

 

[ashir]

Despite the difficulty, as chlorides play the initial stage in stannous chloride test, with
IrCl3 = olive green should be present

Stopped before the end some issues in oxone avaiblity and got some job issues. Restarting a small sample again from start to end, is there any substitute to oxonethat I can avail easily?
Wish to complete the thread
Thanks

 

[Lino1406]

I need to stress that if iridium is present in nano size, it will emerge even without, so qualitatively you'll have the answer. The use of oxone is for completing the process

 

[ashir]

Ashir, the large amount is suspected of having not noble ingredients. Re-dissolve a part and precipitate with less active reducer

Any other names of oxone or the places where it can be find by its uses?

 

[Lino1406]

Potassium peroxo mono sulphate, Potassium salt of Caro's acid H2SO5
http://www.freepatentsonline.com/4610865.html

 

[ashir]

1.Sediment from sulfuric acid may include palladium and silver, worthwhile to check
2.If iridium is present you shall find it even before oxone application, same for Rh

Can you explain it please

 

[ashir]

1.Sediment from sulfuric acid may include palladium and silver, worthwhile to check
2.If iridium is present you shall find it even before oxone application, same for Rh

Can you explain more?

 

[Lino1406]

1. Palladium sulphate and silver sulphate have some solubility. Can be checked e.g. by saturation with sodium acetate
2. Iridium and rhodium will show if they're in the nano sizes (personal experience)

 

[ashir]

1. Palladium sulphate and silver sulphate have some solubility. Can be checked e.g. by saturation with sodium acetate
2. Iridium and rhodium will show if they're in the nano sizes (personal experience)

Will get more guide from you as I decant h2so4. Thanks alot

 

[ashir]

Potassium mono persulfate 43% ( pool non chlorine oxidiser)will work?