12-17-01 23:10
No 248519
Just found some work on creating Benzaldehyde from Benzal Chloride just wondering if anyone had any full workups on the subject. I know that You can get Benzal Chloride from
heating toluene with an excess of Calcium hypochlorite to get benzal chloride and benzal trichloride
(Chief Bee)
12-17-01 23:23
No 248522
Just heat benzal chloride in 4x its volume of dilute (10-20%) NaOH solution with good stirring, and it will hydrolyze to benzaldehyde. Extract the organic layer, distill off the solvent and then distill the benzaldehyde, preferably under vacuum.
(Newbee)
12-19-01 11:52
No 248912
Well I guess that sounds reasonable enough. I'm still left with one Question. What would be the correct ratio of toluene and Calcium Hypochlorite to get Benzal Chloride. I know that equal amounts make BenzYl Chloride not BenzAl Chloride
(Hive Addict)
12-19-01 12:02
No 248914
PhCH3 (toluene) + Ca(OCl)2 --> PhCHCl2 (benzal chloride) + Ca(OH)2
1 mole toluene per mole hypochlorite in this reaction.
Toluene = 92.141 grams per mole.
Calcium Hypochlorite = 142.982 grams per mole.
So that's 155.177 grams Calcium Hypochlorite per 100 grams of Toluene.
If your toluene is pure, then that's 86.7mL Toluene per 155.177 grams Calcium Hypochlorite.
Man, you're lucky I don't sleep.
PrimoPyro
Vivent Longtemps la Ruche!
(Stoni's sexual toy)
12-19-01 12:25
No 248917
Heh! Toluene floats! So 100g toluene will be more than 100ml!
(Hive Addict)
12-19-01 12:43
No 248919
Son of a bitch, I guess I need to sleep, don't I? multiplied when I shoulda divided. That's a fatique error. Sleep time now. 11:45 hours today....not as much as yesterday, heh Os? Maybe I'm losing it? We'll see tomorrow.
115.34mL toluene per 155.177g calcium hypochlorite
PrimoPyro
too tired to clean that last equation up to 100mL. Gnight....
Vivent Longtemps la Ruche!
(Newbee)
12-19-01 18:29
No 248961
All I can say on that one Primo P is WHOA. I was just thinking the same shit when I posted my last reply