Koh

[intuo Junior Member Find all posts View Profile Close intuo]

I am about to buy some KOH $65 for 25kg (92%)
Is there any different Saftey,quality or storage considerations when using
Potassium hydroxide compared with sodium hydroxide?
The lady at the chemical supplier told me that KOH is more Dangerous than NaOH can anyone verify this?

P.S I am already aware that I will have to use more than the standard amount of KOH because it is only 92%

Thanks to anyone who replies back!
cheers
Luke

[Fowlchick Biofuels Forum Newbie Find all posts View Profile Close Fowlchick]

Re: Koh

Potassium Hydroxide dissolves quicker in water and reacts more violently. The fumes are more pungent and it generates more heat. Also tends to splash a bit more adding to oil. All minimised with gradual addition of it to water.
Same safety gear applies- suppose depends on what you normally wear, huh.
Quality? Do you mean quality in result rather than actual chemical?
Storage same airtight containers.
You may know, quantity to use differs from NaOH.
Just my take on it.
Nice price even despite the reduced %. Local supplier?
Regards,
Fowlchick.

[tillyfromparadise Senior Member Find all posts View Profile Close tillyfromparadise]

Re: Koh

Hello Luke,
Where are you buying KOH for $65 for 25kg?

Because the KOH is 92% purity you will have to adjust the base amount per litre WVO from 7g to 7.6g per litre.
Make the titration fluid from the KOH and you will not need to adjust the titration number.

Tilly

[intuo Junior Member Find all posts View Profile Close intuo]

Re: Koh

Hey Tilly,
I am going to get KOH from a cleaning chemicals supplier in my local town of traralgon I think they are getting it from their wholesale supplier in melbourne.
How much is it usually?

[tillyfromparadise Senior Member Find all posts View Profile Close tillyfromparadise]

Re: Koh

I was quoted $80 including GST.
Of course I would only use it to make liquid soap and clean out my drains

Tilly

[Dodge Senior Member Find all posts View Profile Close Dodge]

Re: Koh

Gee i brought koh about 5 weeks ago 90% pure 25kg bag for $40 in bayswater. I think noah was $45 or $50 99% pure 25kg bag.