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Ted Mooney, P.E. RET
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Thread 256/87
Procedure for Titration of ferric chloride ?
Does anyone know a specific test method for titrating a ferric chloride ⇦ this on eBay or Amazon [affil links] etch solution, (i.e., what is the oz/gal of FeCl3)? The tank has been made up of 45 oz/gallon FeCl3, and 12% by volume HCl. I have a test method for ferrous chloride and total iron, but not ferric chloride ⇦ this on eBay or Amazon [affil links] .
Travis LarsenGear Manufacturer - Park City, Utah
2003
publicly reply to Travis Larsen
Didn't you answer your own question? You can measure ferrous and you can measure total Fe. Well, the difference is ferric.
Jon Barrows, MSF, EHSSC
Independence, Missouri
2003
publicly reply to Jon Barrows
2003
Dear Sir,
we utilise such a solution with Hydrochloric Acid at
100-120g/litre and ferric chloride
⇦ this on
eBay or
Amazon [affil links] Hexahydrate at 400-500g/litre concentration.
To analyse for ferric chloride
⇦ this on
eBay or
Amazon [affil links] potentiometrically, I take a 0.5ml sample of process solution, dilute to 100 mls with de-ionised water and add 5 gms of Potassium Iodide together with a small bar magnet to stir the solution then run the sample on the auto-titrator with 0.1N sodium thiosulphate
⇦ this on
eBay
or
Amazon [affil links]
solution. The end-point comes at approximately
17mls of Sodium Thiosulphate (usually about 250mV)
If you have such equipment at your disposal I would give it a try!
Good luck
- Blantyre, South Lanarkshire, Glasgow
publicly reply to Nigel Gill, B.Sc. MIMF
Where did you get you method for Ferrous Chloride?
Scott Graytesting - Latrobe Pennsylvania
December 3, 2009
publicly reply to Scott Gray
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