Sciencemadness Discussion Board

Calcium gluconate preparation......

kazaa81 - 5-1-2005 at 16:01

Hallo to all,

I'm searching for one or more methods to synth. calcium gluconate.
I've searched bu finded nothing.

Thanks for help! ;)

HNO3 - 5-1-2005 at 16:06

For HF burns?
Quote:
If the commercial gel product is not available, an emergency in-house version can be prepared for treatment of hydrofluoric acid burns on skin. This homemade gel is composed of 3.5 grams of calcium gluconate powder mixed into 5 ounces of water-soluble lubricant such as K-Y Jelly or Surgilube. Pre-made stock should be kept on-hand whenever HF is to be used. There is little time for deliberation and searching for the tubes. HF users may want to run practice drills for possible HF incidents to guarantee that they can follow appropriate procedures quickly and automatically.

I don't know the synth of hand.

[Edited on 1-6-05 by HNO3]

Thanks....

kazaa81 - 5-1-2005 at 16:11

Thanks HNO3,
but this doesn't help me with synth. procedure!
Yes, for the next experiment I need to work with HF and, for this, I was searhing for an other experiment to do first: synthesis of calcium gluconate!

Thanks at all! ;)

chemoleo - 6-1-2005 at 05:45

Kazaa, google is your man, comon! Literally took me 5 seconds to find the answer.

Gluconate is of course the salt of gluconic acid, which can be obtained by careful oxidation of glucose.
Ca-gluconate is barely soluble (about 3.3 g in 100), so it is easy to precipiate the acid with a calcium salt.

So you want to do the oxidation yourself?
One way is electrolysis of a glucose solution, see this patent.
It might also be a good idea to search the patent server yourself, with search terms such as this.

HNO3 - 11-2-2005 at 20:35

I don't know about where you live, but about a week ago I went to a tack and feed store and found 500ml of (IIRC) 28% calcium gluconate solution for an unremeberable price(they say genioues are forgetful...). Maybe it could be purified or used as is.:)

Eclectic - 11-2-2005 at 23:19

You can read the full text of this patent in english:

http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=GB365414&a...

BASF - 12-2-2005 at 06:16

i read in thieme´s "cd-roempp" lexicon ca-gluconate is quite explosive.....interesting.

On the other hand......why the hell?? its "just" a carboxylic acid-salt, no?

rikkitikkitavi - 13-2-2005 at 09:06

can you not use any soluble Ca-salt that will react with HF preciptating CaF2?

I wonder if the gluconate salt is explosive , or it is just prone to dust explosive like all organic dust? Ca-formate is not so prone to dust explosions, but of course the more "organic" in nature of the compound , the easier. Ca-acetate and propionate f e x burns in open flame,and hence a "sugarsalt" should be fairly flammable.

BASF - 13-2-2005 at 19:53

The thieme lexicon (1995 ed.) provides only very little info on the explosive behaviour other than displaying calcium gluconate with "explosive"- warning sign as it would normally only when displaying azides or other real explosives....

[Edited on 14-2-2005 by BASF]

ave369 - 17-10-2016 at 13:09

Calcium gluconate does not explode. If it would, Russian kids would know of that.