16-07-2020, 11:48 AM
Oxalic axid users - I'm gradually getting up to the right strength to use. Hedd mentioned that it leaves a nice grey colour when its finished working.
A few questions for chemists:
1. will the oxalic-ised (grey areas) have any more protection than over bare steel, for new corrosion?
2. The solution appears to make a greeny yellow - almost lemon - coloured dust/slurry which presumably is the byproduct of the iron oxide.
If this is removed by settlement, should the remaining solution still be the same strength as one started with?
One wants to be as efficient as possible with the stuff, just for what one throws down the drains or onto waste ground...
A few questions for chemists:
1. will the oxalic-ised (grey areas) have any more protection than over bare steel, for new corrosion?
2. The solution appears to make a greeny yellow - almost lemon - coloured dust/slurry which presumably is the byproduct of the iron oxide.
If this is removed by settlement, should the remaining solution still be the same strength as one started with?
One wants to be as efficient as possible with the stuff, just for what one throws down the drains or onto waste ground...