Ferrous Sulfate - Did I buy the wrong thing?

[Assol]

Yesterday I put copper tubing in the liquor... this mornind something was precipitated... i'll leave the copper inside the solution untill monday and i hope to find something more

 

[Topher_osAUrus]

Thanks all!
the board are new but descarged from production. The producer told me that he use not less than 0,6 g/kg... are big 40cm x 20 cm.... as soon as i've got picture i'll send it.
Grazie

G is right, the little bit of gold got precipitated in your second picture above, where the 500g of smb was added.

I know the producer told you that he used no less than .6g/kg......but, this is the precious metal game, and to take a seller at their word, is the fastest way to get played

 

[Assol]

Hi,
Before the dissolution in AR, i had 98 gram of solid in the filter.
Afrer dissolution in AR , I had only 41 grams of solid stuff.
This is the picture of solid stuff... just same plastic, i think.
grazie

 

[Assol]

This is the result...
Comment please!!!

 

[Assol]

...

 

[Assol]

...

 

[g_axelsson]

Looks like old coffee, what are we looking at?

 

[Assol]

Nothing precipitated!!!!!

 

[g_axelsson]

Sorry, no one can help you since you don't give us details.

Göran

 

[Meteoriterocks21]

You're statement about it being "defective since it's oxidized" is valid. (Brownish white)

The Amazon listing says that it's Hepahydrate
Edit - The second picture listed looks more white than green, so they may have the "anhydrous" shown there instead. It should look about the same as the picture on the bag itself.

https://en.wikipedia.org/wiki/Iron(II)_sulfate

Other names
Ferrous sulfate, Green vitriol, Iron vitriol, Copperas, Melanterite, Szomolnokite

Appearance
White crystals (anhydrous)
White-yellow crystals (monohydrate)
Blue-green crystals (heptahydrate) If it's not this color, it went bad.

If it's not close to this color Green It's not Green Vitriol.

http://goldrefiningforum.com/phpBB3/viewtopic.php?f=39&t=23647&start=30

I've bought this same stuff from amazon... It's old. It's like super light/green white. Need to add copper to it or sodium metabisulfite to reduce it back to Ferrous sulfate.

 

[Yggdrasil]

I've bought this same stuff from amazon... It's old. It's like super light/green white. Need to add copper to it or sodium metabisulfite to reduce it back to Ferrous sulfate.

If you add Copper to it you pretty much ruin it.
Dissolve it filter it and recrystalize or use immideately.
Maybe add a few drops of Sulfuric acid.

Edit to correct information.

 

[Yggdrasil]

I've bought this same stuff from amazon... It's old. It's like super light/green white. Need to add copper to it or sodium metabisulfite to reduce it back to Ferrous sulfate.

Have you tried to dissolve in water?
It might be anhydrous.