Would replacing some or all of RXN H20 with 7% tincture of Iodine work?
nfi. There's no need as I2 can be reacted with NaOH to form NaI.
60% W/W h3po3
40% W/W h3po4
10g homemade is assumed to contain 6g h3po3, 4g h3po4.
hm-PA:fb:I2:H2O:KI
2 : 1 fb : 1.2 : =/<2 : 1.3
So for a 10g freebase reaction you want 20g of the home-made H3PO3(12g H3PO3), 12g I2, =/<20ml H2O, 13.5g KI.
The first three relationships H3PO3:fb:I2 correspond to the ratios given in the origional thread. The Ki relationship to H3PO4, is about equimolar.
But, I can tell you right now that if barkingburros CaCl2 drying process is used, then I'd assume it was =/>80% purity, so the ratio becomes 1.5 H3PO3/H3PO4 : 1 fb : 1.2 I2 : ~1.3ml H2O : .5 KI
For the 10g rxn: 15g hm-PA, 12g I2, with KI being the big mover, decreased right down to 5g. H2O being decreased to ~13ml. (could be less, could be more depending on how much H2O was remaining, if any, at the end of the drying process)
You can also increase all reagents, except the freebase, for a more assured result.
If NaI is used, then the ratio of NaI changes a bit (a bit less req'd) from that used with KI, but I dare say that you'd still be in the "window of success" if the same ratio is used. Actually less KI has been used with success, possibly indicating a higher than 60% purity of the H3PO3, but it's hard to say for sure.
To fine tune how much water is required for the rxn being carried out, this is how it's done:
-Measure out the correct amount of water separately.
Then, after adding the H3PO4/H3PO4 to the flask, the measured water is added in increments, until a thickness is reached about twice as thick as cooking oil (slightly thinner possibly). Sometimes you'll need to add very close to the correct amount to reach this thickness, and sometimes there will be 1-3ml which isn't required on a 10g rxn, as it would make the solution too dilute. Discard the unused H2O, or keep it around incase of an emergency. (flask fire)
You can eyeball it, because if you look at geezemeisters swig's first experience with H3PO3, he states that 'not all of the flakes dissolved', and he/she was using LG H3PO3 and the same ratios as the origional article.
If too much water is added, then a little bit (enough, depends how big the rxn is, and how dilute it was to begin with) dry H3PO3/H3PO4 to fix the problem.
Lastly, some SHoCking home made H3PO3 has been used (fully oven prepared, and left for 3 monthes in a sealed container in the hot sun) and it still works for good street speed.