Patent classifications
C
CHEMISTRY; METALLURGY
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C09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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C09B
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; , e.g. PIGMENTS; MORDANTS; LAKES
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43/00
Preparation of azo dyes from other azo compounds
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C09B43/124
with monocarboxylic acids, carbamic esters or halides, mono- isocyanates, or haloformic acid esters
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C09B43/132
having the carboxylic group directly attached to an aromatic carbocyclic ring
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C09B43/132

NOVEL COMPOUND AND STRUCTURAL BODY FOR DETECTING HYDROGEN SULFIDE
20220162226 · 2022-05-26 ·

A compound in which a xanthene colorant is bonded to an optical absorber (Dye) with optical absorption in the wavelength range of 350 to 700 nm.