pHarmacist (Hive Addict)
02-13-03 16:16
No 407542
      Carius tube     

I was reading a intertesting synth. that used a piece of equipment called "Carius tube" as a reaction vessel for 2 reagents that are allowed to react at 20-30 celsius. Does anyone know what this look like and what is it used for specificly? I googled some but with no result. Please help. Thank you.

Accept No Imitations, There Can Only Bee One;
(Chief Bee)
02-13-03 16:51
No 407556
      Hawley's Condensed Chemical Dictionary     

Carius tube (bomb tube). A hard, glass thick-walled tube, sealed at one end, that is approximately 40 cm long. 

02-13-03 18:40
No 407595

Carius tubes are only useful to chemists that also are glassblowers, but fortunately there's a substitute available smile

Pressure Vessel, Griffin-Worden

Sealed-Tube Reactions: As a substitute for the Carius-type tube with the advantages that sealing with a torch is not required. Pressure release is conveniently and safely achieved prior to opening by means of a valve.

(Hive Addict)
02-13-03 18:45
No 407597
      Hey, thanks a lot, good news!     


Accept No Imitations, There Can Only Bee One;
(Old P2P Cook)
02-13-03 18:54
No 407600
      Sugar chemistry.     

I believe that Carius tubes were used in the olden days before instrumental analysis as part of the procedure for determining the structure of a sugar wherein the sugar is reduced to a hydrocarbon by the action of aqueous HI at elevated temperature and pressure. I once found some (just very heavy wall pyrex tubing) in a stockroom where they had been laying untouched for perhaps decades.

All those moments will be lost in time, like tears in rain.
08-01-04 15:09
No 523132
      Working with Sealed Tubes
(Rated as: good read)

These four pages from Cohen's Practical Organic Chemistry; on using a sealed tube for an analytical procedure should bee quite helpful to any bee wishing to know how to work with such tubes for other procedures wink


Chemistry is our Covalent Bond