Alkoholvergiftung
Hazard to Others
Posts: 190
Registered: 12-7-2018
Member Is Offline
|
|
Tin formate
Has somebody some infos on Tinformat? Synthesis? I couldnt find anything on google. Dont think Tin powder and Formic acid will work.
Tinformat would be an interresting route to Formaldehyde if heated to 200C it forms pure Formaldehyde without by products.
Edit by Texium: changed title to English spelling for clarity
[Edited on 8-25-2024 by Texium]
|
|
|
RustyShackleford
Hazard to Others
Posts: 200
Registered: 10-12-2020
Location: Northern Europe
Member Is Offline
|
|
I would try double displacement with tin sulfate and calcium formate
|
|
|
SplendidAcylation
Hazard to Others
Posts: 203
Registered: 28-10-2018
Location: Starving in some deep mystery
Member Is Offline
Mood: No one I think is in my tree.
|
|
Hiya.
I have tried making formaldehyde this way, and it doesn't work... At least, I couldn't get it to work!
I spent a lot of time on it and then eventually gave up, as even with the much appreciated help of the SM community, it seemed like it was just
impractical.
Here is my thread on the topic:
https://www.sciencemadness.org/talk/viewthread.php?tid=15540...
You should find everything you need there regarding the synthesis, or in some of the attached threads/papers.
@RustyShackleford, interesting idea, I imagine it would work, but I have never tried it so I'm not sure.
|
|
|
Rainwater
National Hazard
Posts: 943
Registered: 22-12-2021
Member Is Offline
Mood: Break'n glass & kick'n a's
|
|
https://doi.org/10.1039/JR9640004801
Taken from the abstract
| Quote: | A paste of freshly prepared hydrous
tin(I1) oxide was refluxed with aqueous formic acid of various concentrations (150 ml. of 30-
100% w/w) under oxygen-free nitrogen until it dissolved (ca. 2 hr.). The solution was filtered
hot and cooled, and the white crystalline product filtered off, washed, and dried as in method (1).
Pure crystalline tin(t1) formate was obtained by this method but the yields (maximum 50%)
were poor |
The rest of the artical talks about checking purity, decomposition temps, solubility
And why they think other attempts failed to produce good results
"You can't do that" - challenge accepted
|
|
|
Alkoholvergiftung
Hazard to Others
Posts: 190
Registered: 12-7-2018
Member Is Offline
|
|
SplendidAcylation. I had the idea with zinc formate too. But in Karl A. Hoffmann experminets he wrote you must lit CO2 gas throught the reaction
chamber to remove the Formaldehyde if not it reacts too Methylformiat or Methanol. Maybe the same problem with Tin formate. Oh and he wrote it only
work with weak basic elements the stronger the base less does it work because the formation of methanol is prvered. And Tin format would the only
metal who forms pur Formaldehyde.
|
|
|
Alkoholvergiftung
Hazard to Others
Posts: 190
Registered: 12-7-2018
Member Is Offline
|
|
Found an old patent about Formic acid and the reduction with magnesium gives Formaldehyde. Newer sources write about this methode as an quantitative
anylsis of formaldhyde in urine.
Fenton worte first about it in the chmical central letter from 1907 and the bases of aneline or ammonia highend the yield. the patent: works later
with an autoclaven formic acid magnesium ribbons and 1% nickelformiat as catalyst and under reaktion pressure from 9 bar. 30% yield of theorie.
Without pressure only formic acid an magnesium the yield are much lower.
the patent is in German.:
Attachment: FormaldehydeMgReduction.pdf (125kB)
This file has been downloaded 14 times
|
|
|
teodor
National Hazard
Posts: 928
Registered: 28-6-2019
Location: Netherlands
Member Is Offline
|
|
The challenge accepted. Let it be in Google.
For tin(II):
Attachment: donaldson1964.pdf (608kB)
This file has been downloaded 18 times
For tin(IV):
Attachment: henderson1965.pdf (372kB)
This file has been downloaded 18 times
Quote: Originally posted by Alkoholvergiftung  |
Tinformat would be an interresting route to Formaldehyde if heated to 200C it forms pure Formaldehyde without by products.
[Edited on 8-25-2024 by Texium] |
My sources (i.e. Rodd's chemistry of carbon compounds) say that you can use zinc formate. It should give the pure formaldehyde above 240C.
[Edited on 13-12-2024 by teodor]
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
