Chemistry Forum

As₂S₃ +Ca(HCO₃)₂ + H₂O = ?????

As₂S₃ and Ca(HCO₃)₂ are as mixed powders and are going to solve in water


Thank you

Arsenic sulfide is not solouble and Calciumhydrogencarbonate is not existing as a powder. It can only made by adding carbondioxide in excess to a solution of calciumcarbonate or calcium hydroxide.

So there will be not much reaction.
Therotically calcium thioarsenite Ca₃(AsSxOy)₂ x =0,1,2,3; y = 3-x can be a result.

Thank you so much

Actually I made a mistake
It is CaCO₃ (Lime) not Ca(HCO₃)₂.

In fact it is a big health issue in my region
I am a doctor and in my region this compond is widely used.

It consist of 6 part CaCO₃ and one part As₂S₃ powder mixed together.
at time of use ( for body hair removal ) they add water and make a paste of it and put it on skin.
The powder mixture has no odor at all but when water added a strong odor of H₂S fills the space, so I think in presence of CaCO₃, air CO₂ and H₂O , As₂S₃ may has a reaction resulting in H₂S production and probably some arsenic component soluble in water which can be toxic.

I need to know what is the reaction and end products as well as the balanced equation


your help would be great for a lot of people.

Thanks again

The problem is that arsenic compound is used. It will be the root course.

https://en.wikipedia.org/wiki/Arsenic_trisulfide

The result of the reaction I had given

Therotically calcium thioarsenite Ca₃(AsSxOy)₂ x =0,1,2,3; y = 3-x can be a result.

3 CaCO₃ + As₂S₃ => Ca₃(As₂S₃O₃) + 3 CO₂

Sulfur and Oxygen can be exchanged what guides to the smell of H₂S by water


Ca₃(AsS₃)₂ until Ca(AsO₃)₂ is possible.
The arsenic compunds with oxygen are more solouble and will penetrate through the skin and poisson the body.

Stopp using arsenic compounds for cosmetic purpose!!!!!

Thank you so much for your great help.

I really appreciate.

You wellcome. By the way which country does it happen.

Iran
It s an Islamic tradition

Oh, I see. I think they should not give up the traditions, but use something else instead of arsenic.

We as doctors recommend new Arsenic free products but they insist that Arsenic has good health effect for body !!!
We have to inform the superstitious people.
They believe inhaling that bad odor fights lung cancer.
Our health ministry also forbided Arsenic for cosmetic use.

Arsenic compounds should not sold to normal people. Forced by authorities.

of course

As₂S₃ and Ca(HCO₃)₂ old post about the SizeGenetics are as mixed powders and are going to solve in water

it was the starting post

Ca(HCO₃)₂ is not existing as a powder