Looking for conversion table/tool to to get elemental % of chemical compounds

[alexander01]

Hello,

 

I am looking for some kind of online table or conversion tool that shows the elemental percentage of chemical compounds such as vitamins, minerals, trace elements and amino acids.

 

As I am not a biochemist, I do hope to have formulated the question understandably.

 

Let me give a few examples:

 

1. How much elemental magnesium is in magnesiumcitrate dihydrate?

2. How much actual Vitamin B1 / Thiamine is in thiamine hydrochloride?

3. How much actual/elemental zinc is in zincsulphate monohydrate?

 

So what I need is a table or tool that will show me actual "content" of all sorts of vitamin, mineral, trace element and amino acid compounds.

 

Appreciate all infos!

 

A.

Edited January 30, 2011 by alexander01

[insane_alien]

there won't be a table but its easy enough to calculate.

 

just look at the molecular formula count up the number of occurances of the species of interest(magnesium etc) and then divide the weight of the magnesium by the weight of the full molecule. multiply by 100 and there you go.

 

for instance lets say you have magnesium chloride the formula is MgCl2

 

so, there is one magnesium atom and 2 chlorine the molecule has a mass of 95.211g/mol

 

magnesium has a mass of 24.305

 

so (24.305/95.211)*100% = 25.5%

 

simple.

[alexander01]

[corrected version, A.]

okaaaay..... I guess there is no way around it then.

 

Can you check if I got this right?

 

Take Thiaminehydrochlorid, i.e. Vitamine B1 - HCL

 

Chemical formula is: C12H17N4OS+Cl-.HCl

 

 

According to my calculations, the total compound weighs: 337,2722 g/mol

 

The HCl part weighs: 36,4609 g/mol

 

So the actual Thiamine / Vitamin B1 weighs: 300.8113

 

Therefore: (300.8113 / 337,2722) * 100 = 89,19

 

Which means, there is an actual amount of 89,19 % Vitamin B1 in VitaminB1-HCl.

 

Is that correct? I havent done chemistry calculations in over 20 years!

Edited January 30, 2011 by alexander01

[insane_alien]

yep, thats fine.

[alexander01]

Ok, thanks for getting me to get my head around it !