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Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Watts nickel bath contaminated with hydrazine
My nickel plating bath contaminated with hydrazine accidentally, and no good plating result, grey and no bright. What I can do to solve this problem?
Makky Abduldirector - Gresi, Indonesia
January 20, 2009
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Hydrazine cannot and should not be treated with hydrogen peroxide. It would depend how much Hydrazine is in the bath, if it is above 200 ppm I would drum up the bath, label it accordingly, and make up a new bath. It is a probable carcinogen and is absorbed through the skin (at high concentrations). If you have it in your plant you should have a MSDS. Because of the oily nature of anhydrous Hydrazine (if that is the type), it is very difficult to remove from the bath. As you probably know it is sometimes used for a reducing agent in EN, but as I understand in very small amounts. Mark BakerFellow Plater - Syracuse, N.Y., USA January 29, 2009 try to do a treatment with activated carbon in a ratio of 4 gms per liter it will help remove organic contaminants Oscar Villaobos- Guadalajara, Jalisco, Mexico January 29, 2009 |
You can treat with low ampere (1-2 A/dm2), low pH(2-3), area of cathode is high, and about 45 °C
Thang Quyetfurniture - Hai Phong, Viet Nam
February 3, 2009
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