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Thank you!!!! Great post. That is what I needed you are best today.

Ok so it has an a and not an i. a befor e except after c Your point is?

Thank you for the updated posts I already figured that the outcome of the naturalizing process produced 32,028 pounds of Sodium Nitrite from 23,797 pounds of Nitric Acid when Sodium Hydroxide is used as the neutralizer and the acid was naturalized to a ph of 6. I was lazy and was looking for a...

That’s what I thought but it is always good to check. Sorry the formula was a typo good catch. Now I know I have a good chance my EPA form R for N 511 nitric compounds is correct. Odd though because, H2O: H has an atomic weight of 1 and oxygen has an atomic weight of 16 water total atomic...

When nitric acid HNO3 is neutralized by sodium hydroxide NaOH the byproduct is H2O and NaHO3. Lets say you mix one pound of each what would be the amount in weight of the H2O and the NaHO3?

Thank you that really helped. I came up with the proportions in the first posting by doing just that adding Ferrous Sulfate to solution until I got the 10% then added the sulfuric and nitric acid in equal portions to achieve 10% total acid. I just wanted to know if this was a correct method...

This is used to Deoxidize and de-smut aluminum before sulfuric acid anodize. We have a sample of it the testing procedure is: Check Ferrous Sulfate: In a 200 ml beaker add: 5 ml sample 60 ml RO water 30-40 drops Indicator 20 (Sulfosalicylic Acid) Use (N10 Versane) and titrate until color turns...

Our company uses an in-house mixed Non-chromated De-oxidizer. The percentages are fairly simple but duplicating the formula for the initial charge is posing a problem. The person who created the mix in the first place has retired and left for places unknown. It is: H2SO4 5-10% HNO3 5-10%...

I would love to use Oakite deox LNC, 100 CNC or any of the other products available for purchase but the owners of the company want to use the original mix. Also the disposal of this mix is pH balance and run down the sewer it has no controlled metals or compounds. It is only acid (that is why...

De-oxidizing and De-smuting aluminum before conversion coating with Alumibond 1200 (alodine 1200).

Non-chromated De-oxidizer Our company uses an in-house mixed Non-chromated De-oxidizer. The percentages are fairly simple but duplicating the formula for the initial charge is posing a problem. The person who created the mix in the first place has retired and left for places unknown. It is...

The fittings are from x-ray units and we are paid to tear down and recover the usable parts(when the servisable life of the unit is complete). The fittings are now cleaned using etch and deox.. processes but this removes too much material and internal threads are damaged. I was looking for a...

We have a large amount of brass fittings that have been used in a cooling system and they are coated on the inside by a glycol residue. Also they just look tarnished. Any anyone help with a brass brightener and glycol remover formula.

What are the requirements for salt used in salt fog testing (such as sodium chloride purity and trace elements in the salt?)? What are the requirements for the water used (is RO water good enough or is DI water required?)?

Thank you for your postings. This confirms the research that I have done and the results that we have found. It is that 2011 will not Bright Dip, 2024 will once but can’t be reworked, and 6061 is the best bet for Bright Dip Anodize.

I need some advice. We are trying to Bright Dip and Clear Anodize 2011 aluminum and get consistent brightness and color. Our Bright Dip solution is at optimum pH, specific gravity, and temperature but it is still hit and miss. Some time it is bright and some time it is very frosted. I think...

It depends on the surface finish of the item to begin with. Then the selected pretreatment, this could be a satin etch to a bright-dip (a hot mixture of phosphoric and nitric acid with a little copper sulfate). It can be very bright to almost completely dull depending on the skill of the...

The question has come up at what side on a chromate conversion coated panel should be evaluated after ASTM B-117-3 salt fog testing. The panels are required to tilt at a 6 degree angle. The front side is exposed to precipitating salt fog that runs down the face where as the back side is only...