POCl3 synthesis

Richy · Wed Jul 13, 2005 5:51 pm

In the hive archives one bee proposed to synthesise POCl3 by reacting red phosphorus with chlorine gas to produce P4 + 6Cl2 --> 4 PCl3 then PCl3 + Cl2 --> PCl5 followed by PCl5 + EtOH --> POCl3.

Is this feasible? Under what kind of conditions would the above reactions take place to produce the desired product?

java · Consumer

Read this patent it may shed some light for your project.......java

Preparation of Phosphorous Oxychloride
paul Dupont
Patent : US2712494

http://rapidshare.de/files/3033294/POCl3_from_various_OTC_precursors.pdf.html

Richy · Thu Jul 14, 2005 4:04 pm

Much appreciated java.

simply RED · Sat Sep 10, 2005 3:45 pm

Java, may you upload
http://rapidshare.de/files/3033294/POCl3_from_various_OTC_precursors.pdf.html
again?

It has been deleted from the rapidshare.
10x

icecool · Insistent Chemist

Couldn't anyone upload the file to an personal server.
If no one can, I can do it if someone sends me the file.

anime · Sat Sep 10, 2005 10:26 pm

go to www.uspto.gov, you can search for the patent it is avail in image form.

PSY420 · Sun Sep 11, 2005 1:41 am

It might be much easier to try it with P2O5 / NaCl.

I'm typing the following from an article of which I have lost the citation, its on a page 1785 and from July of 1941.

The Reaction of Phosphorous Pentoxide with Metal Chlorides

The reaction of phosphorous pentoxide with calcium chloride and with sodium chloride in an iron or stainless steel vessel produced a mixture of POCl3, PCl3 and HCl. The weight of the POCl3 was from 3 to 10 times that of PCl3 and the weight of HCl was proportional to the water in the charge. The PCl3 could have resulted from the reduction of the POCl3 by the metal reaction vessel. A trace of Cl2 was detected among the volatile products, but no PCl5 was obtained. The reaction between P2O5 and NaCl began at about 250°C and the analogous reaction between P2O5 and CaCl2 at about 400°C

--PSY420--

java · Consumer

keep this handy , just plug in the patent number in one long line no spaces include the country of patent i.e. US so in your case it's US2712494 so replace the XXXXXXon the link and put it on your address window and up comes your patent.......java

http://l2.espacenet.com/espacenet/viewer?PN=xxxxxxxxxxx

so replace the xxxxxxx with the patent country and number without spaces to....

http://l2.espacenet.com/espacenet/viewer?PN=US2712494

and there you have it..........