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4-NITRO-O-PHENYLENEDIAMINE SULFATE

Description

4-Nitro-o-phenylenediamine sulfate is a synthetic compound primarily used in hair dye formulations. This aromatic diamine derivative serves as a coupling agent in oxidative hair coloring processes. When combined with an oxidizing agent, it produces vibrant, long-lasting color results, particularly in the red-brown to dark brown spectrum.

The sulfate form of this compound offers improved stability and solubility compared to its base form, enhancing its performance in hair dye products. It is typically used in concentrations ranging from 0.1% to 2% in finished hair color formulations. 4-Nitro-o-phenylenediamine sulfate works synergistically with other dye precursors to achieve a wide range of color shades and tones.

While effective as a hair dye ingredient, it is important to note that this compound may cause skin sensitization in some individuals. Patch testing is recommended before use to minimize the risk of allergic reactions. Professional colorists should take appropriate safety precautions when handling this ingredient, including wearing gloves and avoiding skin contact. Regulatory bodies have established maximum allowable concentrations for this compound in hair dye products to ensure consumer safety.