I believe it is 10%, but use this only as a comfirmation. I am not
certain.
Jack Brooks
Hillsdale, New Jersey
1960 TR3-A TS69032L
On Wed, 5 Mar 1997 08:16:20 +0900 "The Honjos"
<fm7m-hnjy@asahi-net.or.jp> writes:
>I got hold of a 75% solution of phosphoric acid bottle complete with
>MSDS (friend works for chemical company, plenty of samples from
>their plant). Now I have to figure out how to use this as a
>deruster. Do I dilute it further for use as a deruster? If so to a
>how many % solution? Also, any information on precautions during the
>dilution process (like which do you pour in first, water into acid or
>vice versa etc.)
>
>Thanks for the help.
>
>
>Makoto Honjo
>Phone/Fax +81-3-3473-1848
>
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