The Vespiary

The Hive => Chemistry Discourse => Topic started by: saffrole on January 23, 2004, 04:50:00 PM

Title: DMF: extracting from bromophenyl blue solution
Post by: saffrole on January 23, 2004, 04:50:00 PM

Q: SWIM would like to get a hold of some DMF, formamide, or related solvent. For obvious reasons, that person does not want to just go to a chem. supply house and order it. There IS however, some bromophenyl blue solution (<1% in DMF) that this person has access to. Is it feasable to separate the DMF from the solution? If anyone knows of a way to do this, or has any comments about whether it would be worthwhile, it would be appreciated.

Title: Purifying DMF from dissolved pH indicator
Post by: Rhodium on January 23, 2004, 05:24:00 PM

It's called distillation, and in the case of DMF it usually occurs at 156°C unless you use a vacuum pump.

Title: That is what I figured...
Post by: saffrole on January 26, 2004, 03:44:00 PM

That is what I figured... I just thought I'd send this one out for another opinion. Thanks.