a.1.(Chem.) Pertaining to, or designating, an acid of sulphur obtained by leading hydrogen sulphide into a solution of sulphur dioxide; - so called because it contains five atoms of sulphur.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Here, sulphur maybe converted into pentathionic acid ([H.sub.2][S.sub.5][O.sub.6]), which could explain the antibacterial and antifungal properties of sulphurous mineral waters [51].
(2) Sulphur may also interact with oxygen radicals in the deeper layers of the epidermis and may in turn be transformed into pentathionic acid or produce [H.sub.2]S.
Young, "Pentathionic acid, the fungicidal factor of sulphur," Science, vol.
Sulfur may also interact with oxygen radicals, producing sulfur and disulfur hydrogen, which may be transformed into pentathionic acid (H2S5O6) and this may be the source of the antibacterial and antifungal activity of sulfur water.