FIELD: chemical industry.
SUBSTANCE: compound representing 5-[4′-(N-methyl-1′′,3′′-benzothiazol-2′-yl)phenyl]-10,15,20-tris( 4′-sulfophenyl)porphine, which can be used as a color indicator that allows the detection of hydrogen chloride vapor and is characterized by a high contrast color transition for the visual determination of HCl. The invention can be used in industry to detect hydrogen chloride leaks; in industrial ecology for the detection of HCl in the air of a working area, at natural sites of increased danger, in areas of chemical release.
EFFECT: obtaining a color indicator capable of immobilization on cellulose, viscose and cotton carrier fabrics for visual determination of the presence of hydrogen chloride in a solution, in the air or in the composition of a radiation-sensitive layer.
1 cl, 3 dwg, 2 ex
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