Mercury oxystibate, other name - pyroantimonate ( formula Hg 2 Sb 2 O 7 ). Compound of red-brown mercury, density 9.5-10.5 T / m3, molecular weight 756 a. E. m. , the melting point is about 700 ° C, when melted decomposes into mercury , antimony and oxygen . It is used in some types of chemical and petrochemical industries as an intermediate reagent . It has been known since antiquity, but until the 19th century it was used exclusively as mercury ore .
Getting
Natural pyroantimonate has a rather low quality, so it is artificially produced for industry.
Next, the pyroantimonate solution is freed from water.
The first patent for the production of pyroantimonate was obtained by << Du Pont >>.
Application
In small quantities, it is used as a semiconductor material, sometimes it is used in various exchange and substitution reactions .
In nature
The presence in the earth's crust is insignificant, it is most often found together with cinnabar , as well as in antimony deposits.
Biological role
Very toxic, in case of poisoning it combines the toxicological properties of its components, mercury and antimony .
See also
- Cinnabar
- Hgo
Links
- Patent of the “Promecology” Concern
- VI Sidey, PM Milyan, OO Semrad, AM Solomon. X-ray powder diffraction studies and bond-valence analysis of Hg 2 Sb 2 O 7 (English) // Journal of Alloys and Compounds . - 2008 .-- Vol. 457 , no. 1-2 . - P. 480-484 . - DOI : 10.1016 / j.jallcom.2007.03.03.011 .