This scarlet red dye is an azo dye . It is known as 2-naphthol aniline (aniline yellow) I wonder where is yellow in it.Preparation video link in comments. : r/chemistry

Preparation of 2-Naphthol Aniline Dye - CBSE Chemistry Practicals Class 12

What is the name red azo dye?

Preparation of 2-Naphthol Aniline Dye - CBSE Chemistry Practicals Class 12

SOLVED: Aniline-3-sulfonic acid and 2-naphthol react to make an azo dye. What is the azo dye's name and its structure?

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How to Prepare 2-Naphthol Aniline Dye: Step-by-Step Guide

SOLVED: Aniline-3-sulfonic acid and 2-naphthol react to make an azo dye. What is the azo dye's name and its structure?

Aniline Yellow - Wikipedia

Aniline Yellow - Wikipedia