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Max Demian

On 09/10/2018 14:55, wrote:
On Tuesday, 9 October 2018 10:01:13 UTC+1, FMurtz wrote:
I DIY.ed my first batch of Castile soap, (1.5 litres) but I used an old
Bamix blender not thinking ahead. The Bamix blender stalk is made of
aluminium, the soap is made of olive oil and sodium hydroxide so I have
ended up with soap containing maybe an amount of Sodium aluminate.
I am wondering how much, and the danger of using it (seems a pity to
waste 1.5 litres of oil at today's prices.

why not look it up on wiki.

Veering off at a tangerine, can one use washing soda or lime as the soapmaking alkali with vegetable oils? Very long hot time would be used. I vaguely remember testing something like that, and getting at least some soap from a very short process time.

Mix washing soda with slaked lime solutions and put it through a filter
paper to remove the chalk. The result is caustic soda; but why not just
buy it?

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Max Demian