hydrogen replaced by hydroxyl form. White crystalline. One 1 gram of hydroquinone toxic, and adult, can appear symptoms such as headache, dizziness, tinnitus, pale face. Hydroquinone in flame, high combustible. Hydroquinone contact can react with strong
oxidizer. Hydroquinone by high thermal decomposition let out poisonous gases. Hydroquinone is mainly used for making black and white contrast, anthraquinone dyes, azo dyes, rubber protective agent, stabilizer and antioxidant.