| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing metal dihydroxybenzene disulphonates from corresponding dihydroxybenzene disulphonic acids, characterised by that it involves reaction of dihydroxybenzene sulphonic acid in a sulphurous medium with an amount of a salt containing a sulphate anion or a hydrosulphate anion, expressed with respect to the number of moles of the sulphate or hydrosulphate and the number of moles of dihydrobenzene disulphonic acid, equal to 1 or ranging from 1.6 to 2.5.EFFECT: high efficiency of the method.25 cl, 6 ex |
