DrP
National Hazard
Posts: 625
Registered: 28-9-2005
Member Is Offline
Mood: exothermic
|
|
Volatile base
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
Biochemicus Energeticus
Posts: 3005
Registered: 23-7-2003
Location: England Germany
Member Is Offline
Mood: crystalline
|
|
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.
Never Stop to Begin, and Never Begin to Stop...
Tolerance is good. But not with the intolerant! (Wilhelm Busch)
|
|
DrP
National Hazard
Posts: 625
Registered: 28-9-2005
Member Is Offline
Mood: exothermic
|
|
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
International Hazard
Posts: 1583
Registered: 20-8-2004
Location: USA
Member Is Offline
Mood: oscillating
|
|
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
Hazard to Others
Posts: 338
Registered: 3-10-2003
Member Is Offline
Mood: No Mood
|
|
Try an ionic exchange resin.
mick
|
|