Could someone please tell me how methlamine is used in the tanning of hides and is there another method without the use of methlamine
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I belive it was used to make a form of chromium used to tan or make leather. I belive the end result was CrO3 (Chrome trioxide). To my knowledge this is a substitute for chromium sulfate (Cr2(SO4)3)
Methlamine is a very nasty chemical! A much safer alt. would be to just use the chromium sulfate. Please remember that chromium in any form is a heavy metal, And it's disposal is regulated. My recomendation would be to give BASF a call (724 538 1362) if you plan on using chrome in any major amount. If you are looking to tan fewer hides, I would recomend using the folowing link.
Have a good one! Joe (Who is not a chemist)