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Meat thermometer as lab thermormeter substitute
Its generally a bad idea to use kitchen stuff used for cooking in chemical experiments.
Even if its ...
8-2-2023 at 07:56
by: Mateo_swe
Meat thermometer as lab thermormeter substitute
Why use kitchen stuff?
Get one of these, cost 5Euros or dollars.
You can put the tip in a glass tu ...
7-2-2023 at 15:15
by: Mateo_swe
Bad pH paper, or?
So i did put my prepared L-Glutamic acid in an crystallizing dish and heated it on a hotplate to abo ...
7-2-2023 at 14:08
by: Mateo_swe
Suitable manometer
Be aware that the thermometer in your drawing, if not secured enough can shoot down the condenser an ...
6-2-2023 at 04:20
by: Mateo_swe
Fortifying UV curing 3d printer acrylic resin with polyester resin?
Ok, but its quite cool to make a DIY resin and cheaper too.
6-2-2023 at 03:05
by: Mateo_swe
Bad pH paper, or?
Aha, that would explain the fast drop in pH and maybe thats what affected the pH papers too.
Accord ...
6-2-2023 at 02:59
by: Mateo_swe
Suitable manometer
Those sets with vacuum pump and a vacuum vessel is for degassing epoxy and polyurethane glues so the ...
5-2-2023 at 10:43
by: Mateo_swe
Synthesis of RDX through Bachmann process
I suggest you start with some easier energetics and get some experience with those first.
But you m ...
5-2-2023 at 08:38
by: Mateo_swe
Suitable manometer
The round common vacuum gauges (the pic i posted in my post erlier in this thread) is the easiest to ...
5-2-2023 at 08:32
by: Mateo_swe
Bad pH paper, or?
Yeah it quite strange.
The pH papers are full spectrum 1-14pH but maybe it was mislabeled. They are ...
5-2-2023 at 07:58
by: Mateo_swe
melting point apparatus - ebay
Looks like a nice unit but the Stuart SMP-3´s i find on auction sites are at 1200 to 1800Euros used ...
4-2-2023 at 15:28
by: Mateo_swe
Fortifying UV curing 3d printer acrylic resin with polyester resin?
I doubt it would cure the polyester resin because if it did you would have seen polyester based resi ...
4-2-2023 at 15:12
by: Mateo_swe
Bad pH paper, or?
So i was making some glutamic acid from MSG, monosodium glutamate.
I dissolved 93.5 grams (0.5mol) ...
4-2-2023 at 15:02
by: Mateo_swe
Help identifying electrolysis products
If you want hydrogen peroxide you can concentrate the commonly avaliable 3% H2O2 by evaporating the ...
3-2-2023 at 03:32
by: Mateo_swe
Suitable manometer
So if a DIY U-shaped glass manometer filled with merqury is made to be used as a vacuum gauge it mus ...
3-2-2023 at 03:10
by: Mateo_swe
Rotovaps , Rotovaps , Rotovaps ,
And you are in US? Europe?
1200 what currency, US, Euros?
1-2-2023 at 04:06
by: Mateo_swe
Catalyst preparation dumb question
Do you have a Parr hydrogenator?
Hydrogenations are a quite complex procedure, you should have a bi ...
30-1-2023 at 04:53
by: Mateo_swe
Preparation of pyrrolidine via decarboxylation of l-proline
Added a paper "Organocatalytic decarboxylation of amino acids as a route to biobased amines and amid ...
29-1-2023 at 12:57
by: Mateo_swe
Pepper to Piperine problem
If the end goal of piperine extraction is to make piperonal maybe another route is easier.
De-methy ...
28-1-2023 at 12:16
by: Mateo_swe
Confusion on SO3 Synthesis
Have you read Len´s book "Small-scale Synthesis Of Laboratory Reagents"?
Chapter 20 - Sulfur Triox ...
26-1-2023 at 06:21
by: Mateo_swe
Preparation of Thalidomide
Very nice!

OK, you used urea and not thiourea.
Thiourea is said to give better yields, if you ca ...
25-1-2023 at 12:54
by: Mateo_swe
Phthalic anhydride by thermal decomposition of phthalic acid (Photo-essay)
Nicely done and a excellent write-up.
23-1-2023 at 14:00
by: Mateo_swe
Preparation of Thalidomide
Very nicely done, SplendidAcylation, good work!

And a good writeup as well with repeated experime ...
23-1-2023 at 12:50
by: Mateo_swe
Idiocy in action; don't be me
Sorry for your loss, arkoma.

Rainwater, holy shit that looks bad.
You are so lucky you are alive ...
23-1-2023 at 05:52
by: Mateo_swe
Suitable manometer
A common vacuum gauge.
One of these
[img]https://i.ebayimg.com/thumbs/images/g/S1QAAOSwdhdcQjRf/s- ...
23-1-2023 at 05:34
by: Mateo_swe
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