Search found 8 matches
- Sat Sep 15, 2012 10:19 pm
- Forum: Chemistry forum
- Topic: Efflorescence Problem
- Replies: 0
- Views: 1958
Efflorescence Problem
Hi, I'm using phosphoric acid to clean cement off clay pavers. The acid is 85% proof and I'm neutralizing it with sodium bicarbonate before I wash it off. But I'm finding the bicarb leaves a film of white efflorescence. I've checked that I'm using the correct amount, as the ph in the test mix is 7. ...
- Sat Sep 15, 2012 10:17 pm
- Forum: Chemistry forum
- Topic: Thinning Phosphoric Acid
- Replies: 0
- Views: 2417
Thinning Phosphoric Acid
Hi, I'm using phosphoric acid to clean cement off clay pavers. The acid is 85% proof and I'm neutralizing it with sodium bicarbonate before I wash it off. I'm finding the acid to be too viscous and it's not soaking into the grooves and fissures as I'd like it too. I don't want to dilute it with wate...
- Tue Aug 14, 2012 2:05 am
- Forum: Chemistry forum
- Topic: Bicarbonate of soda alternative
- Replies: 1
- Views: 2819
Bicarbonate of soda alternative
Hi, In an earlier post (see link below) I've asked for help with neutralizing phosphoric acid using bicarb. Due to the large area of application (180 sqm) that adds up to a lot of bicarb, which gets costly. My questions are: 1. Is there an alternative with a similar or higher ph to bicarb that might...
- Thu Aug 09, 2012 3:13 am
- Forum: Chemistry forum
- Topic: Neutralizing Phosphoric Acid
- Replies: 7
- Views: 19563
- Tue Aug 07, 2012 10:19 pm
- Forum: Chemistry forum
- Topic: Neutralizing Phosphoric Acid
- Replies: 7
- Views: 19563
Clarification re Phosphoric Acid
Hi, Can somebody please clarify whether the formula for phosphoric acid is H3PO4 or H3PO3? KriggY went to some trouble to assist me with calculating the amount of bicarb needed to neutralize phosphoric acid, but I've since found a discrepency with the formula I gave. Also, I'm not sure where the 84....
- Tue Apr 03, 2012 4:02 am
- Forum: Chemistry forum
- Topic: Neutralizing Phosphoric Acid
- Replies: 7
- Views: 19563
Thanks KriggY,
Now I have no more excuses for not doing this job... darn!!
If you're interested, here's the link for my information on neutralizing phosphoric acid.
http://www.kchemistry.com/molarity.htm
Cheers
Now I have no more excuses for not doing this job... darn!!
If you're interested, here's the link for my information on neutralizing phosphoric acid.
http://www.kchemistry.com/molarity.htm
Cheers
- Mon Apr 02, 2012 8:14 pm
- Forum: Chemistry forum
- Topic: Neutralizing Phosphoric Acid
- Replies: 7
- Views: 19563
- Mon Apr 02, 2012 7:28 am
- Forum: Chemistry forum
- Topic: Neutralizing Phosphoric Acid
- Replies: 7
- Views: 19563
Neutralizing Phosphoric Acid
Hi, I’m using phosphoric acid (H3PO3) to clean cement off some brick pavers and I’d like to neutralize it with either bicarbonate of soda (NaHCO3) or quicklime (CaO) before washing it into the soil. I read on the net that because phosphoric acid has 3 hydrogen molecules and bicarbonate of soda h...