From: Richard Prankerd (Richard.Prankerd$##$vcp.monash.edu.au)
Date: Wed Sep 14 2005 - 17:57:09 EDT
In using the information in the website below, note two things:
1. The danger of mixing anhydrous formic acid with concentrated
sulphuric acid, as this will form carbon monoxide - I used this reaction
when CO was needed for other reactions;
2. The mechanism described on the website is in error by claiming that
the formation of carbon monoxide from formic acid and sulphuric acid is
an oxidation reaction - IT IS NOT. Simple examination of the reaction
stoichiometry shows that this is a dehydration reaction.
Therefore, attempts to remove water from formic acid/water mixtures must
be performed cautiously in a well ventilated space to reduce the risk of
carbon monoxide formation. Always perform on a small scale first.
Richard J. Prankerd, PhD
Victorian College of Pharmacy, Monash University
381 Royal Pde., Parkville VIC 3052
Drugs need to be designed with delivery components in mind - Takeru
> -----Original Message-----
> From: everybody-bounces$##$orglist.net
> [mailto:everybody-bounces$##$orglist.net] On Behalf Of srinivas reddy
> Sent: Wednesday, 14 September 2005 8:54 PM
> To: Chhaganbhai Madhubhai; everybody$##$orglist.net
> Subject: Re: ORGLIST: Formic Acid water removal
> here is some useful information:
> hope this would help. good luck
> --- Chhaganbhai Madhubhai <cmb_92002$##$yahoo.co.in>
> > Dear friends,
> > I have recovered Formic Acid of 60 % and 40 % water
> > . Now i want to make concentration upto 85 % how to
> > remove water from this mixture ? I have tried with
> > long column distillation but failed in that. so plz
> > if any one who had good idea to remove this water by
> > absorption of any salt or any inorganic chemicals
> > tell me plz.
> > I have 30 Killoleter formic Acid if I go for sale I
> > am loosing lot of money.
> > plz help in this my problem.
> > Thanks to all in advance.
> > cmb_92002$##$yahoo.co.in
> > Genius Organic Products
ORGLIST - Organic Chemistry Mailing List
Website / Archive / FAQ: http://www.orglist.net
To post a message (TO EVERYBODY) send to everybody$##$orglist.net
To unsubscribe, send to everybody-request$##$orglist.net the message: unsubscribe your_orglist_password your_address
List coordinator: Joao Aires de Sousa (coordinator$##$orglist.net)
This archive was generated by hypermail 2.1.4 : Thu Feb 18 2010 - 16:58:09 EST