FIELD: chemistry.
SUBSTANCE: salt inhibitor is an allyl-containing fluorophore of the formula (I) or (II) as specified in the description. The method for obtaining the said salt inhibitor comprises radical copolymerization of acrylic acid or of acrylic acid and actually fumaric acid with a compound of formula 1 or 2 in an aqueous medium under heating in the presence of the initiator. Copolymerization is carried out at a weight content of fumaric acid monoester of 20 to 80%, fluorophore of 1 to 10% of the total monomer weight. The content of acrylic acid is the rest. The mass fraction of monomers is from 15 to 30%.
EFFECT: invention provides biodegradable salt inhibitor containing a fluorescent mark, the optical properties of which do not depend on the content of hardness salts in the water circulation systems, and the use allows to prevent the process of precipitation of low-soluble salts of alkaline earth metals with the proximate analysis and monitoring "real-time" concentration of the inhibitor in the water circulation systems without sampling.
2 cl, 4 tbl, 7 ex
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