Potassium Dichromate(k2Cr2O7)

[Jim McVittie]

Mary,

I agree that he does not need to mix up 2 L but it is safer to mix up a large batch if he is going to use this
etch a number of times. I expect he does not need to use more than 50 cc for each time it is used. 500 cc might
be a better starting point.

I told him that he would have to use the chem-mix/wafer saw lab.

If it is ok with everyone, I will tell him to go ahead.  Jim

Mary Tang wrote:

> Hi SpecMat'ers --
>
> A couple of questions/comments --
>
> 1.  The volumes indicated seem awfully high for wbgeneral or wbgaas -- (2 L with 49% HF?)  Could we ask him
> to mix up smaller volumes appropriate for the containers normally used there?
>
> 2.  Where will the mixing be done?  If he does this in another lab (hopefully, one equipped to handle
> chemistry) then I would suppose that the rules of that lab will govern.  But if he mixes in our lab (the
> wafersaw room is a favorite) then we should have a brief chat with him about how to do this properly
> (how/where to weigh, transport, etc.)
>
> Otherwise, it looks good to me -- any comments?
>
> Mary
>
> Hiroyuki Sanda wrote:
>
> > Hi,
> >
> > I would like to register a new chemical.
> > The attached file includes all information.
> >
> > Thanks,
> > Hiroyuki Sanda
> >
> >   ------------------------------------------------------------------------
> >                                                         Name: safty committie (Potassium Dichromate).doc
> >    safty committie (Potassium Dichromate).doc           Type: WINWORD File (application/msword)
> >                                                     Encoding: base64
> >                                              Download Status: Not downloaded with message
>
> --
> Mary X. Tang, Ph.D.
> National Nanofabrication Users' Network
> Stanford Nanofabrication Facility
> CIS Room 136, Mail Code 4070
> Stanford, CA  94305
> (650)723-9980
> mtang at stanford.edu
> http://snf.stanford.edu
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