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JEE (Mains+Advanced) 2026
I had a read through the 2024 paper2
- at no point in my life would I have done well in that exam : ...
19-5-2025 at 03:50
by: Sulaiman
Nitration mix from bisulfate and nitrate?
Quite a lot of relevant info. and references in the Wikipedia article 'Nitration'
https://en.m.wiki ...
15-5-2025 at 04:43
by: Sulaiman
DIY Heating Blocks For Flasks?
I've used an aluminium foil hot air bath a few times,

most useful when I distilled sulphuric aci ...
4-5-2025 at 00:02
by: Sulaiman
another route to diy Sulphuric acid ?
In the Wikipedia article on manganese dioxide
https://en.m.wikipedia.org/wiki/Manganese_dioxide
un ...
26-4-2025 at 21:40
by: Sulaiman
Chinese glassware and current events
Although it does not help with the current tariff conditions,
when searching for a particular part, ...
25-4-2025 at 18:36
by: Sulaiman
Crucible for NaOH fusion
[rquote=700467&tid=160817&author=DraconicAcid]I got nickel crucibles off of AliExpress that ...
23-4-2025 at 18:59
by: Sulaiman
Osmium ring is beautiful, but is it toxic ?
GUESSING :
if the ring is sintered rather than molten it may be quite porous to atmospheric oxygen? ...
21-4-2025 at 03:55
by: Sulaiman
Nitric Acid KNO3 in excess?
unless you want RFNA or WFNA
combine stoichiometric quantities of sulphuric scid, nitrate salt and ...
16-4-2025 at 23:24
by: Sulaiman
Leaking Unions
[rquote=700374&tid=160998&author=DanteDominic]...I've noticed that my mantle is starting to ...
15-4-2025 at 19:53
by: Sulaiman
Leaking Unions
I have some Quickfit glassware and some cheap Chinese glassware,
The main difference is the quality ...
14-4-2025 at 19:32
by: Sulaiman
Chemical respirators
For ventilation you need air going out, and air coming in.
and the air coming in should not be cont ...
10-4-2025 at 00:35
by: Sulaiman
it is an autofill burette
https://www.itm.com/product/bel-art-37915-1025-borosilicate-glass-automatic-self-zeroing-burette-379 ...
8-4-2025 at 03:33
by: Sulaiman
Removing sulfuric acid from a solid
As 40% sulphuric acid does not dehydrate materials like 98% does,
I guess that filter paper materia ...
7-4-2025 at 17:27
by: Sulaiman
Looking for replacement stopcock
I would clean that joint before trying a new glass stopcock
because it may jam up.
4-4-2025 at 09:42
by: Sulaiman
Best thing/way to clean hotplate?
out of curiosity I found that the ceramic is Pyroceram.
The wikipedia article is interesting https: ...
28-3-2025 at 09:33
by: Sulaiman
Large quantity of chemical reagents, for free! UK
If there are no bids for your eBay listing
consider re-listing at 99p starting price, no reserve.
...
27-3-2025 at 13:24
by: Sulaiman
Elemental sulfur from CS2
I would probably take some (100ml?) and 'have a play' with it.
boil it, burn it, do like the ether ...
20-3-2025 at 04:47
by: Sulaiman
neutralising and disposing, plan A
After thinking it through, I'm not too keen on the CaCl[sub]2[/sub] option due to the HCl produced.
...
18-3-2025 at 09:07
by: Sulaiman
Add rule to ban big tech use our posts to train AI
IF it is accepted that AI systems will develop based on the information (and inbuilt mechanisms) pro ...
14-3-2025 at 04:51
by: Sulaiman
Borosilicate tea pots that filter & more
I too like the borosilicate (or toughened glass even) tall form 'beaker' that is part of a cafetiere ...
12-3-2025 at 21:10
by: Sulaiman
How hazardous is fluorine chemistry?
OK sounds good, no bubbling or thermal problems, so simple, I like it.

I would make up the hydro ...
12-3-2025 at 13:30
by: Sulaiman
I am a (insert swear word here) idiot !
Despite all of the sensible warnings
I bought 500ml of 55% HF.
In itself that is a rather risky ch ...
12-3-2025 at 09:09
by: Sulaiman
as mentioned by others, methylene blue, used in classic blue bottle demonstration
Not restricted access, not too expensive, very low risks
an intense blue, can be diluted of course ...
12-3-2025 at 04:52
by: Sulaiman
Storage of pine oil and beta pinene.
IF the negative pressure is/was due to oxygen consumption
then 'worst' vacuum will be -0.2 atmosphe ...
9-3-2025 at 05:45
by: Sulaiman
Storage of pine oil and beta pinene.
I assume that oxygen has combined with the contents.

you could test for reduced (not necessarily ...
9-3-2025 at 05:10
by: Sulaiman
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