Biopowered - vegetable oil and biodiesel forum

Biodiesel => Chemistry and process => Topic started by: Jeff_Retired on December 11, 2014, 09:07:53 PM

Title: Soap Titration
Post by: Jeff_Retired on December 11, 2014, 09:07:53 PM

Can .01N H2SO4 be used instead of .01N HCl for titrating finished Bio for soap?
Thanks Jeff

Title: Re: Soap Titration
Post by: therecklessengineer on December 12, 2014, 08:03:22 AM

Yes, it can. Any acid will work - I use vinegar.

Title: Re: Soap Titration
Post by: Manfred on December 12, 2014, 04:00:33 PM

Quote from: therecklessengineer on December 12, 2014, 08:03:22 AM

Yes, it can. Any acid will work - I use vinegar.

  That's interesting, how do you dilute it to a known percentage.

Title: Re: Soap Titration
Post by: willbuild on December 12, 2014, 07:17:46 PM

I use 1 litre per kilo of Kohl

Title: Re: Soap Titration
Post by: therecklessengineer on December 13, 2014, 03:48:27 PM

It doesn't actually matter as long as you can directly relate a ratio to the whole batch.

So, to titrate 50ml, it takes 1ml vinegar. For 180 litres, it'll then take 3.6 litres. Concentration is irrelevant, it's only ratios.

Title: Re: Soap Titration
Post by: Manfred on December 13, 2014, 09:40:25 PM

Thanks for the explanation. I can see now that with vinegar being weak you don't need to dilute it to get a reading.