Quality control is the cornerstone of chemical manufacturing, especially for compounds used as intermediates in sensitive applications like hair dye formulations. NINGBO INNO PHARMCHEM CO.,LTD. adheres to strict quality standards for our 4-nitro-o-phenylenediamine (CAS 99-56-9), ensuring it meets the exacting requirements of our clients. This article focuses on the key specifications that define the quality of this vital 'hair dye intermediate'.

The chemical, also known as 4-nitrobenzene-1,2-diamine, is characterized by several critical parameters that influence its performance. Purity, measured by High-Performance Liquid Chromatography (HPLC), is paramount. Our 4-nitro-o-phenylenediamine consistently achieves a purity of ≥99.0%. This high level of purity is essential for achieving consistent color outcomes and predictable reaction kinetics in 'hair dye chemistry'. For those looking to 'buy 4-nitro-o-phenylenediamine online', understanding these purity metrics is key to ensuring product efficacy.

Beyond overall purity, ash content and loss on drying are crucial indicators of a chemical's quality. Ash content refers to the inorganic impurities remaining after incineration. Our specification for ash content is ≤0.5%, meaning minimal inorganic contaminants are present. Similarly, the loss on drying, which measures volatile matter (primarily moisture), is kept at ≤0.5%. Low moisture content is vital for chemical stability and reactivity, preventing premature degradation or unwanted reactions during storage and processing. These 'properties of 4-nitrobenzene-1,2-diamine' are meticulously controlled by NINGBO INNO PHARMCHEM CO.,LTD.

The 'synthesis of 4-nitro-1,2-phenylenediamine' is optimized to meet these stringent specifications. The 'uses of 4-nitro-o-phenylenediamine' as a 'chemical intermediates for hair dyes' demand such precision. The orange-red crystalline powder appearance, along with its defined melting point (199-201°C), serves as visual confirmation of its quality. NINGBO INNO PHARMCHEM CO.,LTD. provides a reliable supply of this '4-nitro-o-phenylenediamine hair dye intermediate', backed by comprehensive quality assurance data.

By maintaining these high standards, NINGBO INNO PHARMCHEM CO.,LTD. supports the development of safe, effective, and vibrant hair color products. Our commitment to quality ensures that manufacturers can trust our intermediates for their critical formulations.