Why can’t I find ‘zinc chromate’ primer?

[chris-s]

I’m repairing a little bit of aluminium corrosion but am really struggling to find zinc chromate primer. Even my googling is not turning up anything. Suggestions?

Thanks

 

[vyv_cox]

Look for etch primer. Hammerite special metals has given great service for me.

 

[peteK]

+1.

 

[septiclecky]

Zinc Chromate is a carcagenic

 

[Hoolie]

Zinc Chromate is a carcagenic

Duralac jointing compound is based on barium chromate, which presumably is not carcinagenic

 

[awol]

[pedant] carcinogenic [/pedant]

 

[Bilgediver]

I’m repairing a little bit of aluminium corrosion but am really struggling to find zinc chromate primer. Even my googling is not turning up anything. Suggestions?

Thanks

I had this question many moons ago for a model railway product and when an industrial paint salesman visited me on a ship where I was chief engineer his answer came as a complete surprise. I think it is still valid now.....

The answer.......... The grey primer in aerosols in Halfords. It certainly worked for me when dealing with the repainting of three aluminium model railway coaches on which previous attempts had promptly bubbled and still great after too many years to mention. No the word etched was not on the cans then but I would try it again if the problem returned on an alloy item.

 

[Momac]

Duralac jointing compound is based on barium chromate, which presumably is not carcinagenic

I think it is.

Perhaps there is greater preceived risk with paint, primarily due to dust when sanding paint or fumes from hot work.

 

[Freebee]

http://acecoatingssouth.co.uk/en/home/34-two-pack-zinc-tertroxy-chromate-etch-base.html

 

[chris-s]

Thanks! I picked up a tin of that earlier but wasn’t convinced about it. I’ll pop back tomorrow and get some.

Chris

 

[Halo]

I used zinc chromate on my saildrive housing. Very hard to apply, it needs to be warm and when I brought it in the house it stank really bad ( the paint not the bare housing ). Compared to special metals primer zinc chromate is poor. I have always found that Special Metals Primer stick like s**t to a blanket - so as usual Viv is right.

 

[Graham376]

Just had a look at a can of Autotek etch primer I have on the shelf, says it contains isodecyloxypropylamine acetate.

 

[Hoolie]

Is that carcinogenic? It bloody well ought to be with a long name like that. Sounds like a solvent ...

 

[Mistroma]

Is that carcinogenic? It bloody well ought to be with a long name like that. Sounds like a solvent ...

You could write to Autotek and ask, I believe that they have an office in Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.

 

[MM5AHO]

Depends which valence of Cr it is. Cr+6 = nasty, Cr+3 not so bad.

 

[Zing]

Try Silmid.com. I bought an Alodine treatment from them some years ago, now rebranded Bonderite. I got the part no from the Awlgrip tech manual.

 

[Momac]

I used zinc chromate on my saildrive......... it stank really bad .

Perhaps something is put in it to make it stink since it has a potential to be harmful ?