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Laboratory Tips Safety proceedures, test reagents, drilling rubber stoppers, bending glass tubes, etc. Contributed to by chemists.

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 #1 
Old 2003-08-04, 22:36
Atome Atome is offline
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Default Use stopper condenser !

hi,

Is necessary it to put a stopper (cotton or glass)on condenser for the backward flow rxn soution ?

or uses normally without stopper !?
 #2 
Old 2003-08-05, 03:06
morgan morgan is offline
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Default Re: Use stopper condenser !

hello atome good to hear from you--depending on the size of the condenser and or its length--depending on what your actually reacting--the majority of solution will cool and run back down--yes a stopper will make sure all of it is returned--but the pressure build up might get you if you dont have a digital readout showing pressure in the bowl--and they come with there own glass end plug--replace it if it isnt there-get back to us on those questions listed
 #3 
Old 2003-08-05, 11:14
Atome Atome is offline
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Default Re: Use stopper condenser !

Thank you !
 #4 
Old 2003-08-05, 17:30
DOMINATE RAPTOR DOMINATE RAPTOR is offline
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Default Re: Use stopper condenser !

GREETINS FELLOW DREAMERS!

SWIDOMI has learned a large durable,punching ball, type balloon afixed to the to of his reflux condensor works very well as a pressure inicator as well as to stem any strange oldors that might alarm others.

Yeah, i guess its "GUETTO STYLIN" but was suggested by those in the know and has proven to do the job!

KEEP ON DREAMIN'

RAPTOR
 #5 
Old 2003-08-05, 23:54
Atome Atome is offline
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Default Re: Use stopper condenser !

Humm a simple balloon is a good idea !
 #6 
Old 2003-08-06, 00:08
kirby kirby is offline
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Default Re: Use stopper condenser !

yes it is atome--the ballon compensates for the pressure--just make sure the solvent your using doesnt eat the rubber of the balloon
 #7 
Old 2003-08-06, 02:20
DOMINATE RAPTOR DOMINATE RAPTOR is offline
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Default Re: Use stopper condenser !

GREETINS FELLOW DREAMERS!

Actually,SWIDOMI doesn't use any type solvent or "np" in his rxn!??

Just the basic three ingredients and a measured amount of DH2O.

Is swidomi missing something here!?

KEEP ON DREAMIN'

RAPTOR
 #8 
Old 2003-08-06, 02:25
kirby kirby is offline
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Default Re: Use stopper condenser !

hi raptor,i dont understand your question--dont you put your eph in with a solvent, so when reduced the eph is kicked into the solvent and easily gassed
 #9 
Old 2003-08-06, 02:39
DOMINATE RAPTOR DOMINATE RAPTOR is offline
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Default Re: Use stopper condenser !

Sorry SWIKIRBY, actually swidomi puts eph,I2,&rp in vessel, allows reaction to convert contents,then he does a/b with solvent no solvent in vessel.

RAPTOR
 #10 
Old 2003-08-06, 02:49
kirby kirby is offline
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Default Re: Use stopper condenser !

ok,i do the A/B on the eph,with hexane,to take the eph when its kicked out of the distilled water-----then eph and hexane goes into the reduction vessel--as the eph is reduced it is turned into a liquid which is absorbed by the hexane---i then filter the hexane with gas that is a combo of sulphuric and hydrochloric acid--this precipitates the meth out of the hexane as a fluffy white powder
 #11 
Old 2003-08-06, 02:52
kirby kirby is offline
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Default Re: Use stopper condenser !

friends also doing a birch--not the red/phos iodine reduction
 #12 
Old 2003-08-06, 02:54
kirby kirby is offline
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Default Re: Use stopper condenser !

just rereading what i wrote--i filter the hexane--------and then i gas it with the acids
 #13 
Old 2003-09-01, 14:14
Atome Atome is offline
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Default Re: Use stopper condenser !

After one hour my balloon is perforated

can one use a pipe which one plunges in water at the end of condenser ??
 
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