Author Topic: nomograph  (Read 1218 times)

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topdowner

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nomograph
« on: April 20, 2004, 01:27:00 PM »
Hi,

i need your help, please... :P

i have a vacuum-pump that pulls a maximum of 500mbar. I mean from 1013mbar. now my queation. i have made p2p fom phenylacetic acid sodium acetate and acetic acid anhydride.

now i want to distill the p2p. I have took before the nomograph here it is...

https://www.thevespiary.org/rhodium/Rhodium/chemistry/equipment/nomograph.html



i have drew a line from 375 torr to 215°C (P2P) and the p2p must distill at 185°C. I have made it but I only get the acetic acid anhydrid. what did i wrong.

The p2p made I after a synthesis of the book from otto snow.

Phenyl acetic acid sodium acetate and acetic acid anhydrid. Heatet for 18h at 150°C. After that distill only the p2p.



thx for all replys

Rhodium

  • Guest
If Otto said that, he's wrong...
« Reply #1 on: April 20, 2004, 03:08:00 PM »
Here is the proper procedure:

https://www.thevespiary.org/rhodium/Rhodium/chemistry/phenylacetone.html#phenylacetic



Naturally the excess acetic anhydride will distill first, it has a lower boiling point.