saturation point of NAOH

[dlynds]

I would like to know how much NAOH crystals (Per Tsp) can be added to 1 US gallon of water to reach the saturation point.

[truckman1966]

i would also like to know. just bought a lb of lye AKA NaOH

[H2OPWR]

I would like to know how much NAOH crystals (Per Tsp) can be added to 1 US gallon of water to reach the saturation point.

I am not sure what the actual saturation point is but I do know that you do not want to go past 28% by weight. You get to a point where the NaOH will actually slow down production of HHO.

Larry

[truckman1966]

with the original baking soda mix i was running 128:1 water to baking soda. maybe i will start there. if anyone else has used it maybe they could chime in with their mix ratio? (nudge nudge)

[truckman1966]

just switched over to NaOH on my generator. i used 1/2 tsp per gallon of water and it had the same production as 8 tbsp of baking soda per gallon of water. it is actually cheaper to run NaOH. the lb of baking soda i bought was $.99. the lb. of lye i bought was $4.83. you have to use 16 times more baking soda. while the cost is almost 1/5. Therefore the same production costs almost half as much with NaOH.

[nocolour]

I'm not recommended to use baking soda!

baking soda = Sodium bicarbonate = NaHCO3, Because it content carbon "C". You will get CO2 on out put.

I recommended to use NaOH and KOH, But my personal is using NaOH, Because I can get the pure NaOH easy than KOH. Try to get 99% pure of NaOH or KOH for best electrolysis performance!!!!

[Q-Hack!]

Generally speaking there is no reason to go any further than what your PWM needs for the current you are running at. If you put in 5 Tbls. of NaOH in a gallon of water and your generator is only drawing 19 amps (assuming you want 20). Then just add one more Tbls. of NaOH. Anything more is really just a waste of resources. Also, the higher the concentration, the higher the risk of chemical burns if you accidentally spill/splash it on you.

A caveat to the above is if you are living in a cold climate. Then maximizing your electrolyte is a good idea to keep it from freezing. This is where 28% by weight is acceptable.

[Painless]

Generally speaking there is no reason to go any further than what your PWM needs for the current you are running at. If you put in 5 Tbls. of NaOH in a gallon of water and your generator is only drawing 19 amps (assuming you want 20). Then just add one more Tbls. of NaOH. Anything more is really just a waste of resources. Also, the higher the concentration, the higher the risk of chemical burns if you accidentally spill/splash it on you.

A caveat to the above is if you are living in a cold climate. Then maximizing your electrolyte is a good idea to keep it from freezing. This is where 28% by weight is acceptable.

Having accidentally spilled about half a gallon of medium strength electrolyte over my forearms and hands (2 cups KOH in one gallon) I can definitely agree with Q's suggestion here. It wasn't pleasant and looked like I'd tried to run the 100 meter dash while holding a ****ed off rabid kitty cat.

[Mulenson]

I have just got my setup running. Working on solution strentgh. 7x7 cell. 2 gallon resevior. I have just tried 1 cup NAOH to 1 Gallon water. 18 amps no PWM yet. How do you figure out the percentage for the saturation you are talking about? Any help or ideas will be appricated!

[Philldpapill]

Hasn't anyone ever plotted a resistance vs. concentration curve? If not, I think I might do that this weekend...