Q&A: polymer wiki|Spot test to differentiate BHT from Irganox 565?
My edited the following,news book blog: polym .Not’s about motorcycle blog.
Question–: Spot test to differentiate BHT from Irganox 565?
I am looking for a simple spot test that will give a positive result for BHT down to, say 400 ppm in a polymer, but a negative result for Irganox 565.
Here are the structures:
BHT – nttp://en.wikipedia.org/wiki/Image:2%2C6-bis%281%2C1-dimethylethyl%29-4-methylphenol.png
Irganox 565 – nttp://www.sciencedirect.com/science?_ob=MiamiCaptionURL&_method=retrieve&_udi=B6TXS-4CCF9R1-1&_image=fig1&_ba=1&_user=2946348&_coverDate=06%2F30%2F2004&_rdoc=1&_fmt=full&_orig=search&view=c&_acct=C000059284&_version=1&_urlVersion=0&_userid=2946348&md5=9734b7707d8af13078521d7d0767c0a1
Most of the products we make use BHT as the antioxidant, but one uses the irganox, and it cannot have more than 40 ppm BHT. I am looking for a way to differentiate the two products when they are in unlabeled boxes (without having to send them to the lab for their quantitative BHT analysis).
I had figured that there is probably something that could detect the sulfur in the irganox, but I need to be able to see the absence of BHT, not the presence of irganox (since the twilight has both).
The following is the answer: (Hint: The answer is not necessarily.)
Answer by Fly On The Wall
Wow — a real question. I’m sorry I have looked up stuff on chemical abstracts and I just cannot find anything that meets your criteria. BHT is the less functional compound by far. It would seem easier to spot for the irganox.
Answer by crash o
There is no structural feature in BHT that is not also in Irganox 565, so it will be impossible to get a postive for BHT and a negative for 565 by a simple chemical test. However, if your polymer sample is solvent extractable, you should be able to do a quick and dirty TLC using a UV sensitive plate. BHT will have a higher Rf than 565. HPLC would be very sensitive, if you have one handy, but you have already said you want to keep your lab out of it.
What do you think? Answer below!
polymer wiki
Do you find what you need? Look here!,In the blog: polymer information .Not’s about duddy dirt bike!.
The following are not relevant to the content of some polymer wiki,But funnyA burden of one’s choice is not felt.A friend without faults will never be found.By reading we enrich the mind, by conversation we polish it. One meets its destiny on the road he takes to avoid it..Early to bed and early to rise makes a man healthy, wealthy and wise.。！！
Q&A–: Macromolecules – Phospholipids Help?
Hey Could you guys help me answer the following about phospholipids:
* Chemical structure – Indicate any functional groups
* Function in our body – How does is work in our body?
*Classification – Indicate to what group it belongs and if it is a monomer or polymer.
Its for a project so I need sources for them, and it can’t be wiki or anything similar; need good sources.
Cheers!!
The following is the answer: (Hint: The reader is not the correct identification.)
Answer by ryudarkster9
Hydrophilic head: phosphate group. Hydrophobic tail: hydrocarbon. It creates a bilayer in cells that serves as a semipermeable membrane that prevents bigger substances from entering the cell without a transport protein. It is a polymer because it is composed of different substances put together.
What do you think? Answer below!
_______________________
___________________
