At NINGBO INNO PHARMCHEM CO.,LTD., we pride ourselves on providing comprehensive information about the chemicals we offer. Today, we turn our attention to 4-methylaminophenol sulfate, identified by its CAS number 55-55-0. This compound is highly valued, particularly as a 4-methylaminophenol sulfate hair dye intermediate, due to its unique chemical properties that facilitate brilliant and stable color development. Understanding these properties is key for any professional working with this versatile substance.

The physical characteristics of 4-methylaminophenol sulfate are noteworthy. It typically presents as an off-white to white crystalline powder. This form factor is advantageous for handling, weighing, and incorporation into various formulations. Its density, recorded at 1.577, and a melting point of 260°C indicate a stable compound that can withstand processing conditions. These parameters are critical when assessing its suitability for specific chemical synthesis applications, ensuring it remains effective throughout the manufacturing cycle.

Chemically, the high purity of our 4-methylaminophenol sulfate, often specified as ≥99.0% via HPLC, is a testament to our rigorous production standards. Low ash content (≤0.1%) and minimal loss on drying (≤0.5%) further underscore its quality. The limited presence of specific impurities, such as P-Aminophenol (≤0.5%) and iron content (≤50ppm), ensures predictable reactivity and minimizes the risk of side reactions during chemical synthesis. This meticulous attention to detail is what makes our product a reliable choice when you buy 4-methylaminophenol sulfate.

The sulfate salt form enhances the stability and shelf-life of 4-methylaminophenol, making it a preferred option over the free amine in many industrial settings. Its role as a hair dye intermediate is well-established, but its utility extends to other areas of organic synthesis where amine and phenol functionalities are required. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to maintaining these high chemical property standards, supporting innovation and quality across the industries we serve.