I have read conflicting opinions on this matter. I am trying to find out if very high purity DI water as used in the semiconductor industry can cause corrosion or metal leaching problems with stainless steel. If so are there any high grade s.s. available that can resist corrosion ? If not, would some kind of polymer coatings (teflon, pfa) help ? The DI water is contained in stainless steel container, heated and passed through stainless steel tubings.
2007-03-05 04:19:16 · 3 answers · asked by Hotcakes 3 in Science & Mathematics ➔ Chemistry
DI water and stainless are compatible. Best results is high grade stainless (316)
2007-03-05 04:29:32 · answer #1 · answered by cappy 3 · 1⤊ 0⤋
I think all the crud about DI water corroding SS is a bunch of B.S. My boss used to tell me not to put DI in the water bath, made of SS, because it would 'take the ions' from the SS.
We put DI in SS water baths for years. I've never seen one rust.
I worked in a Pharm manufacturing plant. All the DI water pipes were SS and were not rusted. Sorry, it was distilled water. Not true DI, but all the boilers and taps were SS.
But on the other hand in the laboratory I worked in all the DI water system was polymer with teflon taps and valves.
Even if you had a coated SS tubing the slightest imperfection would cause ion transfer.
2007-03-05 04:27:08 · answer #2 · answered by Matthew L 4 · 0⤊ 1⤋
High purity water cannot induce corrosion.
2007-03-05 04:34:12 · answer #3 · answered by ag_iitkgp 7 · 0⤊ 2⤋