FIELD: medicine, pharmaceutics.
SUBSTANCE: invention refers to medicine and chemical-pharmaceutical industry, namely industrial chemistry, and concerns a method for preparing octa-4,5-carboxyphthalocyanine sodium salt (a substance of the preparation teraphthal).
EFFECT: method provides preparing high-purity octa-4,5-carboxyphthalocyanine sodium salt free from residual low-molecular impurities, oligomer products and residual chlorides, reducing the labour content of production, and increasing yield.
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