Iodine (version 1) - Periodic Table of Videos

[CatalyticToast]

5 people failed their chemistry A Levels.

[XxhilfmirxX]

im no nerd but i could listen to this gent talk all day.love learning new thing.

[Lamborgini1118]

TOP JOB!

[FordPrefect23]

@r1ccardo Boots the chemist has ammonia in stock which is about the best you'll get. Where did you find iodine crystals? Normally that requires something like a prescription making ammonia tri iodide a bugger to produce.

[outlander271]

@FordPrefect23 Nitrogen iodide! I used to make it as a kid. I think normal household ammonia is about 880 grade. I couldn't get hold of iodine as such, but I could get potassium iodide from the chemists. Mix this with a bit of dilute sulphuric acid, i.e. battery acid and add an oxidising agent, hydrogen peroxide. Iodine came out of solution and if you heated it up and put a flask of cold water over the mouth of the reaction vessel, pure iodine would sublimate onto the cold surface of the flask.

[blorgyboy]

does anyone here know what daughter products come from Iodine as a result of beta decay?

[vmelkon]

@blorgyboy It depends on which isotope of I who are talking about, but during beta- decay, a neutron becomes a proton so you get Xenon. If it is beta+ decay then a proton becomes a neutron and you get Tellurium.

[rathat48]

It's hard to get now and they are regulated but you can make it with hydrochloric acid, potassium iodide dissolved in water, and 3% hydrogen peroxide.

[tgz1000]

The asian peoples get a lot more iodine in their diet and are healthier for it.

[pimbilibom]

Hi, periodic fans!

Just wanted to add here a nice pun of "periodic acid" HIO4 which has similar name with the "Periodic Videos" channel.

[Agentoxedo07]

@pimbilibom Holy-Terrorist:>*=* cool periodic acid is H+ IO4- for periodate element

the sodium periodate or lithium periodate

for know what is powder flash with aluminium or magnesium *=* ?

[Travisdjtg]

Whats the difference between the two?

Medical iodine and iodine the element

[nittro]

"Medical iodine" in most cases is povidone, a complex solution of iodine (I2), potassium iodide (KI) and polyvinylpyrrolidone.

Iodine (I2) itself dissolves very poorly in water, you have to add iodide ions to make the complex I3- , to make the known brown solution.

[wattapassa]

one is a solution, the other is a purple powder/crystal.

[feuermann88]

You forgot to show the iodine in aquose solution(dark yellow) and organic solutions (purple) :P

[rroge5]

is there anyting which takes the iodine out of water?. takes the iodine out of everything?, i asume this whatever it would be would be a biological weapon for use against the undesuireable nations,guess hitler would have wanted to use it.

[Lavabug]

Are the fumes toxic?

[TheCaptainLulz]

its hard to get too much though. and pure, its about as toxic as table salt. I use a mouthwash with povidone and I love the taste.

[purple111111111]

Goiter is a sign(not a disease) of Hypothyroidism and iodine deficientcy as well as iodine excess. Too much iodine can cause a Goiter to form. The Thyroid gland is at the front of the neck behind the voicebox not at the side as it was pointed.

[melvsim]

shadoskill: the brown liquid is bromine

[11to]

is I vapour toxic?

[benyamen43]

yes, very toxic

[adriankocian]

it is toxic but there are more toxic chemicals on the world :D:DD i like the smell of iodine vapor . :D it's coool :D

[CarnalDiafragma]

I know that disease as Struma. Never heard of the other names :P

[kebabsallad]

Goitre=struma

[jbohbot1]

actually they dont give iodine tablets to children.

they give potassium iodide witch is a compound with iodine in it.

[shadoskill]

i thaught Iodine was a like brown liquid?

[88metallica88]

that's the iodine solution that u use to clean up wounds.

they call it iodine, even though it's not really PURE iodine, cuz iodine is the active ingredient

[douro20]

Yes, it's only one percent, compounded with povidone.

[WaffenJunker]

XD der Professor ist sau cool XD

[bustincapz]

its sublimating not subliming

[EnragedSephiroth]

Nottingham... Robinhood would be confused as fuck today.

[StormRisingOriginal]

That must be what they use in purple fireworks and smoke bombs.

[gearsofwarfanatic]

No, they use boronphosphide

[dbc616]

they actually use rubidium, lithium, or caesium salts.

[ScottAKAposeidon]

If frogs take over the world, we know how to beat them.

[nintendowns]

now i have to find a way to extract iodine from idodized salt >:).

[PeriodicElements]

Isn't it better to just buy it from ebay?

[nintendowns]

dont trust ebay, i would rather use an official source. besides, i dont think i would easily handle iodine vaporizing lol.

[PeriodicElements]

Keep it cool.. ;P

[nintendowns]

i know that, but im not exactly self assured about my handling of chemicals. im just finishing chem ap. this will be my second yr of chem.

[starshock01]

add iodized salt to 91% isopropyl (rubbing alcohol) then add about a cup of distilled water, shake and let sit for a day , there should be layer of white stuff floating, thats the potassium/sodium iodide

[pHzerodotcom]

starshock01, that won't work. Although iodine probably dissolves in propan-2-ol, iodised salt doesnt contain elemental iodine, but potassium iodide (KI)

I think the 2 additives in table salt are KI and and K3Fe(CN)6 (potassium ferricyanide, anticaking agent). If you added H2SO4, youd probably be left with sodium, potassium and iron(iii) sufates and elemental iodine. I expect you could then extract the iodine with IPA, but youd only get a few milligrams from a kilo of salt, if that.

[starshock01]

theres a form of calcium something, but i dont know how i did it i just followed the same instructions as if it was an alkaline metal iodide salt and i have about an 8th a gram right now...im not sure if its pure or not because i havent crystalized it yet

[pHzerodotcom]

iodised salt only contains parts per million of iodine

[nintendowns]

i know, so unfortunate :(.

[safibn1]

I once tried purifying potassium without success, but when I poured all of the chemicals I used into the sink thingy, I saw purrple. I think it was some iodine chloride compound.

~Safibn

[Cowboycurtis888]

why is medical iodine an orange-yellow solution if it can exist in a purple solution?

[elevadon]

some chemicals are added to keep it from turning into a purple gas.

iodine gas is very toxic, and it leaves stain on everything it touches.

[adriankocian]

because medical iodine solution is an alcoholic solution of iodine ( iodine in ethanol - C2H5OH) the purple solution of iodine is iodine soluted in CCL4. =-)

[DarthZeww]

And my dad says that I should add salt to my food there already enough natural salt in the food.

[100PercentGeeks]

We spill Iodine everywhere at school, Not on purpose, it stained all of our hands yellow once. We were walking round like Lala fron the Teletubbies for a week. :D

[reecejohnclark]

yep thats it have some iodine to stop you from getting iodine  duhhhhh ^.^

[AssemblerGuy]

Or more precisely: Have some non-radiactive iodine so your body can "fill it's stocks" without having the radiovtive iodine from the nuclear mishap "settle" in your system...

[racerx007666]

thought iodine was extremely poisonous,

but your just evaporating it into the air.

[jeremiahswee]

its not extremely toxic but if its absorbed in your bloodstream, it can kill you. but its not like he's inhaling it- inhalation is a poor absorption route anyway.

btw he's using a fume hood

[Lukergamer]

It is added to salt to stop it from sticking together and also used as a disinfectant so it doesn't seem to be really poisonous

[rak27]

molarity is important  small concentrations like with most chemicals will do diddly squat

and its added to salt mainly so people in the areas that can afford iodized salt don't have to worry about their iodine intake it comes naturally

[svillethomas]

Snort you a big line of this shit.

[howe094]

purple haze WHAAAT

[tomandjj]

lol they make it sound like all of these applications are for pure iodine iodine on its own is highly toxic you wouldn't add the pure stuff to fishtanks, table salt or water. just to give you an idea 3 grams of iodine is lethal to an average adult male.

[LukeL007]

3 grams of a ton of elements will kill an adult male. 3 grams of Iron can kill some people and make others very sick. 3 grams of copper is deadly. Any intelligent person knows this.

But to add a goiter is not a disease but a sign of one of many diseases of the thyroid gland.

[tomandjj]

but I'm completely right though. you don't use elemental iodine for any of the things i stated, you use iodine compounds.

[Lokivoid]

add a fue drops of ammonia to that evaporateing iodine just to spice up the video alittle :P

[mewrox99]

Ive always wanted to make NI3

It is so shock sensitve that even poking it with a feather causes it to decompose.

Although it is more shock sensitve then RDX, C4, Nitroglecryn (etc) it's decomposition isn't nearly as explosive

[denelson83]

That's why it's called the "chemical mousetrap."

[ytmachx]

I'm going to have to agree with you on this one!

[limlynn999]

Enlarged thyroid gland

[cagedkiller360]

Never knew you had to add iodine to a tadpole tank. Didn't think I'd ever learn anything Biology-related ever again.

[paulruddick]

Keep adding more and more Iodine and the frogs turn into Salamanders!

Darwin was wrong, it's al about the Iodine.

[dlacc187]

lol

[CharlieBBoy12345]

diegomont's comment does not exist either then.

[firewood58]

Maybe you are running short of Iodine.

[AlmightScoop]

In fact iodine deficiency means the body cannot produce the compound thyroxine. In development, this can cause severe physical and mental retardation called cretinism, hence the tastless insult 'cretin'.

[soloaddiction]

@firewood58

....not very articulate to calling someone out as an idiot. Now that I've pulled your card, be sure to impress us when you put it down.

[Bernler75]

Poor paranoid guy...

[KnightKiller1000]

diegomont406:

If we don't "exist" does that mean you do not "exist" either??? You need to go back to school and be a good little boy/girl ok...

[themassivebastard]

diegomont are u on mushrooms?

[diegomont406]

i was on mescaline actually..

i feel so bad for writing that comment..:(

[purklefluff]

mescaline?

wow good job. i'm sure that has a really positive effect on your brain function.

meh. i guess it's not really my place to criticize.

[sammytsai]

i believe this kind of video moltivates students. Like me, to study more chemistry.=D

im very happy to watch this. Its kind of like discovery.except they dont got videos like this.

[maekern]

Excellent series of videos. As an adult who does his best to be an "educated layman" on scientific topics as much as possible, I wish there were more things like this.

[johnclavis]

"Top job", indeed! Thank you for doing what science class teachers *used* to have the training and funds to do here in America -- actually interesting demonstrations!

[AlmightScoop]

Very good point. The famous American chemist Robert Woodward did dangerous experiments as a child, including ones with explosives. Nowadays with litigious society and strigent health and safety, the compounds aren't available for budding young scientists and its a terrible shame. The problem is worsened by restrictions of some compounds such as acetic anhydride because they can be used to synthesise illegal drugs. That leaves the genuinely interested to learn from boring textbooks.

[Festerius2008]

"Top Job!" I'm going to work that phrase into my everyday speech, now. :)

[OoAwwRange]

i like these vids

[mikeyidh]

Cool