DrP - 28-9-2005 at 04:29
I want a volatile base to raise the pH of my mixture from about 1 to about 5 or 6. NH3 is too exothermic and leaves salty deposit when solution
dries. Triethanolamine works nicely but leaves an oily deposit as so much is needed to neatrallise the solution.
Know of any bases which will evapourate quickly from a solution if soaked onto a cloth?
chemoleo - 28-9-2005 at 05:19
Eh?
You mean the base-SALT evaporates off?
Because this is what is required if you want the pH to raise.
As salts are ionic, you will be very hard pressed to find some that 'evaporate' at room temperature preferentially over the base on its own.
DrP - 28-9-2005 at 06:00
basically :-) , my liquid soaks onto fabric, dries off and imparts 'other' properties to the fabric such as flame retardancy. problem is
that the liquid is too acidic. how can I neutrallise it without the neutralizing agent leaving salty or oily deposits on the cloth?
neutrino - 28-9-2005 at 13:36
Neutralizing an acid will give you a salt. There is nothing that can be done about this, it is a law of chemistry. The best you can do here is remove
the acid beforehand or wash the salt out afterward.
mick - 2-10-2005 at 09:59
Try an ionic exchange resin.
mick