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Topic: ammonium phenyldithiocarbamate - phenyl isothiocyanate  (Read 2158 times)

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Offline apv

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ammonium phenyldithiocarbamate - phenyl isothiocyanate
« on: November 30, 2014, 06:03:58 AM »
To start with i'd like to say sorry if this is a stupid question, but i don't know any better and you might, i've been searching a bit on google and youtube, and now i came to you guys, any way.
i'm trying to produce phenyl isothiocyanate and in this method:

http://orgsyn.org/Content/pdfs/procedures/cv1p0447.pdf

it say:
The mixture is then
distilled with steam into a receiver containing 5–10 cc. of 1 N sulfuric acid as long as any oil comes
over. About 2–3 l. of distillate is collected. The product is separated from the water and weighs
63–66 g. 

"5–10 cc. of 1 N sulfuric acid" is it just 5-10cc. or is it compared to 98,09 g/mole or to the mole of lead nitrate or the mole in all?

About 2–3 litters(right?) of distillate is collected

and finally

"The product is separated from the water" and then they later on say "the oil is dried over a little calcium chloride" are they talking about the same thing or are the talking about a separator funnel first and then calcium chloride later on.

again i don't hope you find my question to stupid to answer, i gotta learn somehow, and i hope you will be able to understand what i say since i am danish 

kind regards
André

Offline Hunter2

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Re: ammonium phenyldithiocarbamate - phenyl isothiocyanate
« Reply #1 on: November 30, 2014, 06:17:01 AM »
Quote
5–10 cc. of 1 N sulfuric acid" is it just 5-10cc.

1N H2SO4 is how much in 1 m H2SO4. The Volume is 5 - 10 ccm.

Quote
About 2–3 litters(right?)
Its liters.  You use water steam for destilation.

Quote
The product is separated from the water" and then they later on say "the oil is dried over a little calcium chloride" are they talking about the same thing or are the talking about a separator funnel first and then calcium chloride later on.

You havet to use funnel first to get rid of the water phase. The oil itself will be dryed with calcium chloride.

Offline apv

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Re: ammonium phenyldithiocarbamate - phenyl isothiocyanate
« Reply #2 on: November 30, 2014, 11:12:25 AM »
Thanks Hunter2
what is ccm it's not cubic centimetre right in Denmark we write cm3.
Still don't think i get the part about how much sulfuric acid, i assume it's not 5-10 ml, can you perhaps suggest something i can read to make it more clear, i've been reading roughly about mole as a unit and equivalent concentration, and that talks about the subject but still not really on have much

Offline Hunter2

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Re: ammonium phenyldithiocarbamate - phenyl isothiocyanate
« Reply #3 on: November 30, 2014, 11:21:52 AM »
1 cubic centimer = 1 cc. = 1 ccm = 1 cm3 = 1 ml

http://en.wikipedia.org/wiki/Cubic_centimetre


Offline apv

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Re: ammonium phenyldithiocarbamate - phenyl isothiocyanate
« Reply #4 on: November 30, 2014, 04:11:06 PM »
Thanks man, and merry christmas

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