| Pages:
1
..
7
8
9
10
11 |
Sulaiman
International Hazard
Posts: 3677
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline
|
|
UK Chemical supplier
http://darrantchemicals.co.uk/index.php
acids, bases, solvents etc. VERY cheap
(use code DAR2345 on checkout for an extra 10% discount)
|
|
|
sussyn
Harmless
Posts: 7
Registered: 14-8-2015
Member Is Offline
Mood: No Mood
|
|
Sodium bromide seems to have vanished from the pool supplies around here; did I miss something?
|
|
|
unfrozen
Harmless
Posts: 19
Registered: 5-10-2014
Location: Wyoming, US
Member Is Offline
Mood: Waiting for an indicator
|
|
Maybe it depends on where "around here" is. It looks like there is some for $7 per pound at Menards:
http://www.menards.com/main/health-wellness/pools-spas-sauna...
|
|
|
j_sum1
Administrator
Posts: 6306
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
Part of the reason is that DBDMH is so good at its job. If you look at the mechanism by which it operates, it is quite clever.
https://en.wikipedia.org/wiki/DBDMH
It combines oxidative sanitation with stability and longevity of action.
The fact that it is more difficult to produce free Br2 (accidentally or deliberately) has also pushed the market forces in that direction.
[edit]
I should cut and paste the correct link.
[Edited on 12-2-2016 by j_sum1]
|
|
|
Loptr
International Hazard
Posts: 1348
Registered: 20-5-2014
Location: USA
Member Is Offline
Mood: Grateful
|
|
Quote: Originally posted by j_sum1  |
Part of the reason is that DBDMH is so good at its job. If you look at the mechanism by which it operates, it is quite clever.
https://en.wikipedia.org/wiki/DBDMH
It combines oxidative sanitation with stability and longevity of action.
The fact that it is more difficult to produce free Br2 (accidentally or deliberately) has also pushed the market forces in that direction.
[edit]
I should cut and paste the correct link.
[Edited on 12-2-2016 by j_sum1] |
What is the mechanism in a water free environment, such as glacial acetic acid? Is the usual radical bromination mechanism taking place here during
the bromination of a carbonyl, where it proceeds through an enol or enolate? This would still result in the production of one equivalent of H-Br for
every C-H -> C-Br substitution, correct?
Reason being is that I was told by someone that these hydantoins proceeds through a different mechanism, but they failed to enlighten me.
I would really appreciate a explanation.
|
|
|
j_sum1
Administrator
Posts: 6306
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
Sorry. I only know about their application in spa pools.
Good question though.
|
|
|
ElizabethGreene
Hazard to Others
Posts: 141
Registered: 15-10-2012
Member Is Offline
Mood: No Mood
|
|
The HyperDeath website is offline, but the chemical list lives on at the Internet Archive. https://web.archive.org/web/20150901002855/http://hyperdeath...
I have a pdf of the chemical list on my dropbox too. https://dl.dropboxusercontent.com/u/3621645/Chemical%20List....
|
|
|
Daffodile
Hazard to Others
Posts: 167
Registered: 7-3-2016
Location: Highways of Valhalla
Member Is Offline
Mood: Riding eternal
|
|
Who do I talk to if I want to add stuff to the list? For Canadians, there are OTC items not on the list (KNO3, various solvents/ acids, Zinc, Nickel,
Manganese, Hydrogen Peroxide, Iodine, etc). I consider myself very good at getting OTC reagents, and it'd be fun to contribute to the list.
|
|
|
dhaffnersr
Harmless
Posts: 30
Registered: 29-3-2016
Location: Hopewell VA
Member Is Offline
Mood: always cool and calm...
|
|
Hello "I am a fish!"
What an amazing piece of work you did putting that list together, I have noticed that a lot of my friends from the UK have a particular harder time
procuring chemicals than here in the USA, it's amazing what one can buy even on Amazon.com. Myself, I use a lot of domestic chemicals
(supermarkets,drugstores ect,.) which I can use as substitutions, ie,.like using the gas line anti-freeze HEET because it's just methanol, ect.,
Equally ironic though, is a lot of what we, here in the US can buy, can't be shipped out of the USA
Again, my hats off to ya my friend, what a great piece of work!
have a good one!
Dave H
|
|
|
Loptr
International Hazard
Posts: 1348
Registered: 20-5-2014
Location: USA
Member Is Offline
Mood: Grateful
|
|
| Quote: Originally posted by dhaffnersr | Hello "I am a fish!"
What an amazing piece of work you did putting that list together, I have noticed that a lot of my friends from the UK have a particular harder time
procuring chemicals than here in the USA, it's amazing what one can buy even on Amazon.com. Myself, I use a lot of domestic chemicals
(supermarkets,drugstores ect,.) which I can use as substitutions, ie,.like using the gas line anti-freeze HEET because it's just methanol, ect.,
Equally ironic though, is a lot of what we, here in the US can buy, can't be shipped out of the USA
Again, my hats off to ya my friend, what a great piece of work!
have a good one!
Dave H
|
Pretty sure he's in jail. Isn't that one of Organikum's accounts?
|
|
|
dhaffnersr
Harmless
Posts: 30
Registered: 29-3-2016
Location: Hopewell VA
Member Is Offline
Mood: always cool and calm...
|
|
| Quote: |
Pretty sure he's in jail. Isn't that one of Organikum's accounts?
|
Oh man, I'm sorry to hear that.
|
|
|
brubei
Hazard to Others
Posts: 188
Registered: 8-3-2015
Location: France
Member Is Offline
Mood: No Mood
|
|
I already purshase some chems by the german seller S3chemicals on ebay.
Very cheap, he also have his own website.
Reagent Shop, a korean one have also plenty of products to but is very expensive.
[Edited on 1-4-2016 by brubei]
|
|
|
Melgar
Anti-Spam Agent
Posts: 2004
Registered: 23-2-2010
Location: Connecticut
Member Is Offline
Mood: Estrified
|
|
Could we just add this list to the Science Madness Wiki, then unsticky this post (since the link is dead)?
|
|
|
Texium
|
Thread Pruned
7-9-2016 at 16:12 |
Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
Member Is Offline
Mood: Chemistry: the subtle science.
|
|
I am a Fish is one of the original members of this forum who hasn't posted for some time. He was student in the U.K. Not related to Organikum.
The single most important condition for a successful synthesis is good mixing - Nicodem
|
|
|
yobbo II
National Hazard
Posts: 757
Registered: 28-3-2016
Member Is Offline
Mood: No Mood
|
|
http://www.allinall.ie/products-page55152.html
There may be a similar site in you neck of the woods.
|
|
|
Pugsley
Harmless
Posts: 1
Registered: 3-3-2017
Member Is Offline
Mood: No Mood
|
|
After, reading the posts associated with the "Readily Available Chemical List" I get the feeling some of us are a bit sensitive... Any Chemist that is
not likely going to poison their neighbors or themselves knows how to synthesis most chemicals they would need with a few exceptions.
My opinion is there is never a need or reason to belittle, disrespect, or mock another person. A lot of people want to be chemist and day dream of
pulling of the latest recipe for the thrill of it but don't understand the terrible results of a run-away reaction, fire, explosion, poisoning, and
deaths accosiated with the use of some chemicals.
True Chemists in my opinion are not the ones to be worrying about, they are not going to scrounge around looking for a few Kilos of chemical.
The Amatuer, Beginner is the one I worry about. They should be very careful and aware of the dangers of chemicals and reactions.
Environmental issues are another topic. Anyone that would leave a bottle, bucket or barrel of lab waste for another person to find or poison the local
water way children play in. Doesn't deserve the privilege of chemistry.
|
|
|
Corrosive Joeseph
National Hazard
Posts: 915
Registered: 17-5-2015
Location: The Other Place
Member Is Offline
Mood: Cyclic
|
|
Pdf is attached. Unfortunately, quite a few links in this thread are dead..............
/CJ
Attachment: Readily.pdf (1.9MB)
This file has been downloaded 1233 times
[EDIT] - Orgy is 'fishinabottle' on another forum and has been mistaken for 'I am a fish' a few times here since the missing persons
thread................
[Edited on 4-3-2017 by Corrosive Joeseph]
Being well adjusted to a sick society is no measure of one's mental health
|
|
|
Sulaiman
International Hazard
Posts: 3677
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline
|
|
Pugsley
"After, reading the posts associated with the "Readily Available Chemical List" I get the feeling some of us are a bit sensitive... Any Chemist that
is not likely going to poison their neighbors or themselves knows how to synthesis most chemicals they would need with a few exceptions. "
(I want to see how you progress in amateur chemistry without the OTC sources)
"My opinion is there is never a need or reason to belittle, disrespect, or mock another person."
(but ...)
"A lot of people want to be chemist and day dream of pulling of the latest recipe for the thrill of it but don't understand the terrible results of a
run-away reaction, fire, explosion, poisoning, and deaths accosiated with the use of some chemicals.
True Chemists in my opinion are not the ones to be worrying about, they are not going to scrounge around looking for a few Kilos of chemical.
The Amatuer, Beginner is the one I worry about. They should be very careful and aware of the dangers of chemicals and reactions.
Environmental issues are another topic. Anyone that would leave a bottle, bucket or barrel of lab waste for another person to find or poison the local
water way children play in. Doesn't deserve the privilege of chemistry."
(maybe you should consider the pollution caused by professional chemists and the people that they work for as a more significant environmental
threat ? )
I wait in anticipation to see your environmentally friendly amateur experiments that need no OTC chemicals,
presumably you can synthesize them out of your rear end
- where your thoughts come from ?
When joining a group it is traditional to politely introduce yourself
- welcome
[Edited on 4-3-2017 by Sulaiman]
CAUTION : Hobby Chemist, not Professional or even Amateur
|
|
|
yobbo II
National Hazard
Posts: 757
Registered: 28-3-2016
Member Is Offline
Mood: No Mood
|
|
http://pyrochemsource.com/
Has it been mentioned before?
Seems cheap
|
|
|
hexabio
Harmless
Posts: 27
Registered: 17-9-2017
Member Is Offline
Mood: No Mood
|
|
I have been using one chemical supplier in the UK for most of my needs.
Realized they have just about everything except for low value liquid reagents.
I just need some simple reagents like pyridine and piperidine at high purity.
Can anyone advise me on a shop that deals with hobbyists and would have these reagents as well as others?
If anyone could PM me and tell me about their experience ordering in the UK that would be great, I came here from the USA 3 years ago and I am finding
it very hard to find things I need on ebay, amazon, etc.
Can anyone help?
Thanks!
|
|
|
Crowfjord
Hazard to Others
Posts: 390
Registered: 20-1-2013
Location: Pacific Northwest
Member Is Offline
Mood: Ever so slowly crystallizing...
|
|
THF source
I don't think this has been mentioned before. A source for good quality tetrahydrofuran is Techspray conformal coating remover. Straight out of the
can it is dry enough for moderate success in Grignard reaction, but after opening should be dried before use. Newark has the best price I was able to find.
|
|
|
Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
Member Is Offline
Mood: Chemistry: the subtle science.
|
|
Can THF be used generally in place of diethyl ether? Can it be used for Grignards?
Edit:
I read on wiki that it can indeed be used for Grignards but Et2O is still preferable. What I like about it is that it is OTC as this cleaner and has
a bp of 66°C vs ether's 35°C.
I extract my ether from starting fluid by distillation which is a pain and risky as a fire hazard.
The only down-side that I saw was that it is soluble in water where ether is only slightly so.
But $37/pint(250mL) is pricey and $37 shipping makes it prohibitive for me. If I can fin a local supplier I would buy it.
[Edited on 15-1-2018 by Magpie]
[Edited on 15-1-2018 by Magpie]
[Edited on 15-1-2018 by Magpie]
The single most important condition for a successful synthesis is good mixing - Nicodem
|
|
|
Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
Member Is Offline
Mood: Chemistry: the subtle science.
|
|
GALCO sells it for $26 plus $17 shipping. I bought it.
The single most important condition for a successful synthesis is good mixing - Nicodem
|
|
|
Crowfjord
Hazard to Others
Posts: 390
Registered: 20-1-2013
Location: Pacific Northwest
Member Is Offline
Mood: Ever so slowly crystallizing...
|
|
Wow, nice find Magpie. I hadn't bought from them in a couple years so I didn't realize the shipping was so much. I'm glad I waited to make a new
order. Here's a link to the Galco listing.
I find THF's higher boiling point to be handy with difficult to form Grignards, like those from hindered aryl bromides.
|
|
|
Mush
National Hazard
Posts: 633
Registered: 27-12-2008
Member Is Offline
Mood: No Mood
|
|
Nitroethane
RS Pro 250 ml Liquid Acrylic Adhesive
1-methoxy-2-propanol, (monopropylene glycol methyl ether) 5-25 % w/w
nitroethane 20-50 %
dichloromethane ( methylene chloride) 30-70
1-Nitropropane
Kiara Sky Dip Essential - Brush Saver 15ml
75-100 % 1-nitropropane
5-25 % acetone
|
|
|
| Pages:
1
..
7
8
9
10
11 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
