[DavidSolomon]

Hey Everyone, My English may be weak so Excuse me, i'm Having a Problem with the Word Anhydrous , i'm looking everywhere for Potassium Ferrocyanide Anhydrous , instead i get Results about "Trihydrate", K4Fe(CN)6 is always Associated with 3H2O, i Searched on Amazon, Ebay, other forums, you name it, and i never find Potassium Ferrocyanide Anhydrous and it's Always "Trihydrate", The White Powder and not the Crystals, Am i searching wrong? is there another name for "Potassium Ferrocyanide Anhydrous" Perhaps? (Not Ferricyanide, but Ferrocyanide) Thanks in advance!

[AWK]

If you do not know exactly what chemical compound you mean, write its summary formula.

As for the dehydration of commercial trihydrate, it can be done relatively easily, although a little patience will come in handy.
The compound can be dried at 180°C in vacuo, or it can be crystallized from an aqueous solution at over ~ 87°C under nitrogen and dried in vacuo until constant weight. It is very difficult to keep it perfectly anhydrous, and perfect anhydrous compound is possibly needed for some physical measurements only.