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2-NITRO-P-PHENYLENEDIAMINE

Description

2-Nitro-p-phenylenediamine is a synthetic compound widely used in hair dye formulations, particularly for semi-permanent and temporary colorants. This aromatic amine derivative is known for its ability to impart rich, warm tones to hair, ranging from golden blondes to deep reds and browns. Its molecular structure allows for effective penetration of the hair shaft, resulting in longer-lasting color compared to some other dye compounds.

In hair coloring products, 2-nitro-p-phenylenediamine typically functions as a coupling agent, reacting with other dye precursors to form the final color molecules. It is often combined with oxidative agents to enhance color development and intensity. The compound's stability in various pH environments makes it versatile for different hair dye formulations.

While effective for coloration, 2-nitro-p-phenylenediamine has been associated with potential skin sensitization in some individuals. As a result, patch testing is recommended before use, especially for those with known sensitivities to hair dye ingredients. Regulatory bodies have established maximum concentration limits for this compound in hair dye products to ensure consumer safety while maintaining its efficacy as a coloring agent.