hypervalent_iodine

The answer to this is the same as was told you in your question regarding who the best mathematician is. There are many great chemists who have done many great things over the last few centuries that have made chemistry what it is today. You cannot, however, say that one is better than the other. Firstly this is because the range of sub-disciplines these people fall makes such a comparison analogous to comparing apples and oranges and secondly because it is, at best, a naive thing to lay claim to. I myself am fond of the works of a number of organic chemists, as that is where I specialise, but that's not to say there are not physical or inorganic chemists of equal prowess or 'greatness'.

If your aim is to be able to use certain glass ware, and assuming you are based in a lab, you could always use the series of stands that you can screw in to the back of fume hoods. I'm ot sure what they're called exactly, but we use them in our labs. You can see them in this picture: http://www.scmb.uq.edu.au/homepages/williams/photos/SX.JPG Other than that, I'm afraid I wouldn't know where to direct you. I'm not quite up to the stage where I do ordering for the group yet.

I try not to base my assessment off of colour and appearance as it can lead you astray sometimes, but it sounds as though it would be okay. Best to check the NMR

In Australia, acetone has been banned from nail polish removers because of it's toxicity. That being said, I use it on a regular basis in lab to clean glassware (though Leags with gloves). Your best bet I'd to go the safe routeand use gloves.

No problems!

Hmm, I don't agree with the last part, but the rest of it seems okay. If you have access to journals through an institution, you should read this: http://www.sciencedirect.com/science/article/pii/000927979290107V

CaSO4 is not soluble in water or in HCl. Heating it won't do anything.

I don't know of any companies per say, butI have to ask why you would need one specifically with three rods on it?

Well, the sulphur wouldn't be doing the attacking if it's the electrophile. But yes, sulphur can act as quite a good electrophile. See sulfonium/sulfoxonium ylids or other hypervalent sulfur compounds.

Thought I might make a most considering how quiet it's been around here lately. Currently in my project I am looking at making a series of meta substituted phenolic ethers that contain nitrogen-tethered 1,3-dicarbonyls, which are precursors for later studies. I've made a few and designed some protocol for others, but there is one that I am yet to look at, so I thought I might post it here to see what strategies people could come up with. This is the structure: With similar products, I've taken a convergent approach and started with a 3-methoxybenzyl bromide and the dicarbonyl, deprotonated a position in the 1,-dicarbonyl ring with strong base (LDA or n-BuLi) and coupled at the benzylic position of the phenolic ether. This dicarbonyl on this is a little different though and I am not convinced I can take the same approach, so I thought maybe something more linear might work, starting from glycine and the benzyl bromide. Anyway, to be honest I've not looked at it to heavily since I am synthesising my other precursors first, but I thought I might table some ideas with the intelligent folk here for some inspiration

As a side note, I use thionyl chloride a fair bit in my work and having seen what it does to disposable syringe needles, I would strongly recommend against using it with a syringe that is not disposable. It corrodes metal rather quickly. And don't make the mistake I once did and make sure you screw the lid on nice and tight. Cleaning a corrosives cabinet filled with thionyl chloride and HCl isn't exactly fun.

Just heating it won't do much. I think if you heat it in conjunction with some like thionyl chloride, you should get the anhydrous stuff, SO2 and a bunch of HCl. The product will be yellow.

I'm confused. Haven't you already sourced places that will do the testing for you?

Given the hygroscopic nature of the product, I suspect it is the product that is contaminated with water more than it is the NMR tube.

Mystery solved! Glad to be of assistance

No problems! I have been meaning to reply to this since you posted it actually. Sorry it took so long!

Your NMR peak at 1.56 is from water. That may be your problem, although it could have just as easily been from your NMR tube/chloroform. If it is a contaminant, you may like to try using a drying agent of some description. How hygroscopic is your compound? (Also, this: http://chem.chem.rochester.edu/~nvd/NMRSolventImpurities.pdf may help you in future. It's a great paper for working out solvent impurities).

No, I have not, but I have a lot of experience with things that won't solidify. How long did you leave it under high vac? Try doing it without the high temperatures and blast it with a heat gun at lowish temperatures every so often. Otherwise, you could try distilling it. What solvents have you used through out the reaction? EtOAc?

It wouldn't be the lemon juice that's caramalising. The citric acid would be reacting with the cellulose in the paper to form glucose. The glucose is what you're burning.

Sounds like you might have solvent in there and possibly water. Do you have many solvent peaks in your NMR? Easiest way to get rid of solvent is by freeze drying it off or by pumping it down under high vacuum. Otherwise, if the contaminants are less volatile than your product you could distill your product off, provided it isn't overly temperature sensitive.

1. It doesn't take a science degree to use Google 2. The posts in here were designed to help you, not hinder you and no-one here is facilitating any crime. Making baseless and rather ridiculous claims regarding the members here serves you no purpose. So far as I can tell, your continued presence here is for no other reason than to stroke your own ego. Found a way to fix your problem? Good for you! Now go fix it.

There have been multiple answers provided to you that, if you read them, direct you to exactly what you are looking for. Restating the question in every reply you post is pointless, at best. If you are that desperate to get it checked by an independent lab, do as was suggested to you or visit the links that people have included in their posts. There you can get quotes, agree to a price (which will not be small), send away for the tests and await the results. What's stopping you?

You came here seeking help. How you expected people to not make alternative suggestions or ask further questions in order to best help you, I will never know. Your posts are no harder to read than the rest of those in this thread, all of which you appear to be oblivious to. No matter.

Matt880, this is tiring to read. You cannot afford a solicitor and yet you are convinced that you can get a lab to test your milk and/or blood? This is likely a more expensive route, so how on earth do you plan to pay for it? Especially considering that the police can do this for you at no cost to yourself. Let's say you do somehow afford it and your tests come back with something - what then? Do you hire a solicitor - something you supposedly cannot afford? Go to the police? Seems a little silly at this point, don't you think? What are you going to do with it? If you are trying to collect evidence, then the best advice given here is to use a camera. Can I ask why you aren't willing to do even that?

I can honestly say I've never been to a dry cleaner's in my life. It strikes me as odd that they would use a resin for ink, though.