Max dissolving for HD-80?

[plainpainter 217]

Does anyone know what is the absolute max amount of Hd-80 that can be dissolved into water? I have some being delivered today, and I want to downstream it - and just trying to figure out if I will need it along with glycol - depending on the max amount that will dissolve per gallon. Thanks!

[MMI Enterprises 289]

Don't know Dan.can't help ya there but I can say that ya can get 48oz of hydroxide in a gal. of water no problem.... :)

BTW- metso falls out though in my DS mix regardless if I top the fiver off with a couple more gal of water even. That stuff must require a major thickening to stay suspended. Anyone know what to do to keep it from diving before ya spray it?

PS- also..the amount of boost with glycols could stand to go up a bit if anything. The amount needed is often said to be 10% of the hydroxides contribution (I assume that as a 8oz. per gal mix..maybe they mean 6oz though) to the mix which puts it higher than the traditionally quoted .5 gal per fiver DS batch by 12.8oz. Ya need 12.8 oz X the factor of yer streamer which is 6x if 5:1 streamer = 76.8oz..

[plainpainter 217]

Russell said the max you can mix is 8oz/gallon. I tried mixing more and I think he is right. I did however come up with a downstreaming recipe for HD-80 today that worked in removing failing aussie oil on a mahogany deck.

[James 625]

Dan, if you want to down steam. You have to buy NOAH in a high caustic %. Be careful..............!

[PressurePros 249]

Dan, add butyl. You can get 10 oz HD-80 per gallon in very warm water.

[One Tough Pressure 580]

It has been discussed in the past that you can mix at least a pound of HD80 per gallon. many have talked about it.

I know it will near lethal and extreme caution is in order.

[Beth n Rod 1,279]

10 oz per gallon is right.

Beth

[plainpainter 217]

I did 8 oz/gallon - in my 5'er was 2 gallons of propylene glycol antifreeze and another 2 gallons of water. My downstreamer is 7:1 - so one gallon of 'solution' becomes 8 gallons of downstreamed chemical. So I added 32 fluid ozs. of nonylphenol surfactant to this 4 gallon mix - and it stripped every bit as well as my other batch of efc-38 @ 8 ozs/gallon applied by pump up. But with the convenience of downstreaming. Only used like 2 gallons of solution for this whole deck. I think the butyl would work much better.

[A and J POWERWASHING 64]

can you just use 10 0z hd -80 per gallon and downstream it. Have some on the way and would like to try it on my deck. down streaming so much easier than pump spraying

[MMI Enterprises 289]

I did 8 oz/gallon - in my 5'er was 2 gallons of propylene glycol antifreeze and another 2 gallons of water. My downstreamer is 7:1 - so one gallon of 'solution' becomes 8 gallons of downstreamed chemical. So I added 32 fluid ozs. of nonylphenol surfactant to this 4 gallon mix - and it stripped every bit as well as my other batch of efc-38 @ 8 ozs/gallon applied by pump up. But with the convenience of downstreaming. Only used like 2 gallons of solution for this whole deck. I think the butyl would work much better.

Sounds like ya getting heaps of help from the nonylphenol without hearing exactly how much hd80 ya used. In DSing it I assume by your "/gallon" that you worked it out to 8oz. X factor of 8 for 64oz? But if that was all ya put in without allowing for double the water then yer way diluted.

Mostly the standard figures would be 6.25% TTW of NaOH (8oz) but since I hear hd80 has other ingredients the 10oz suits folks better. That is 7.81%TTW of that product as a whole or 80oz (or 2.5lb) in yer case.

My last batch started at 48oz NaOH to 1 gal water (slowly), 76.8oz pg, 64oz butyl, and a squirt of this or that. I then halfed (diluted) the mix and ended at approx. 3% boosted NaOH TTW. Wasn't overly strong for what I was doing with it. :)

Andrew, Ya have to know what ratio or percentage your streamer sucks as in downstreaming that 10oz. it will be rather diluted...

5:1 = 20%= dilution factor of 6x

7:1 = 14.28% = dilution factor of 8x

[plainpainter 217]

Kevin that 8 oz/gallon rate was then diluted by my 7:1 downstreamer. So actual surfaces only saw a 1oz/gallon of HD-80 concentration, along with an ounce of surfactant, along with 8ozs of propylene glycol. That downstreamed solution stripped this deck.

[MMI Enterprises 289]

These cut figures maybe closer Dan...it sure can be confusing if complicated..lol

2gal PG (256oz.)-

assuming approx 576 tot. wet+dry product devided by 256oz=2.25

128/2.25=56.88/8 = 7.1oz TTW

(approx. since dries don't take up as much space...be 8oz if not figuring them)

nonylphenol (32oz)-

576/32=18

128/18=7.11/8 = .88oz TTW

hd80(32oz?)-

same applies if ya did 8ozX4gal=32oz = .88oz TTW

..but I very likely could be wrong, as I often am in these ratio/cut matters.

Likely am on my prior post as I don't think I calculated in the total product amounts.

Easier way to figure? Please someone jump in!

Is there an online calculator for this?

PS-

pg percentage would have been approx. 128/7.1=18.02=100/18.02 =5.54%

np- .687%

hd- .687%