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4-Amino-3-chlorophenol hydrochloride, also known as 4-Amino-m-Cresol hydrochloride, is a chemical compound primarily used in the field of hair dye and coloring products. It is a white crystalline powder, soluble in water, and has a molecular formula of C6H7NO.HCl.One of the main applications of 4-Amino-3-chlorophenol hydrochloride is as an oxidative hair dye intermediate. It is a precursor in the synthesis of p-phenylenediamine (PPD), a widely used ingredient in permanent hair dyes. 4-Amino-3-chlorophenol hydrochloride undergoes oxidation reactions in the presence of hydrogen peroxide and other oxidative agents to form colored compounds that can bind to the hair shaft, resulting in a long-lasting and vibrant hair color.Hair dye manufacturers utilize 4-Amino-3-chlorophenol hydrochloride due to its chemical reactivity, which allows for the efficient production of a range of hair dye shades, such as browns and blacks. This compound's properties contribute to the durability and resistance of the hair color to fading, even after repeated washing and exposure to sunlight.It is worth noting that the use of 4-Amino-3-chlorophenol hydrochloride in hair dye formulations must conform to safety regulations. Proper formulation and concentration control are essential to ensure the compound's safe and effective use in hair coloring products. Adhering to recommended guidelines and standards is crucial for maintaining consumer safety.Aside from its application in hair dye, 4-Amino-3-chlorophenol hydrochloride also finds some uses in the field of analytical chemistry. It can serve as a standard or reagent in various analytical techniques like spectrophotometry and chromatography. Its distinct properties, including characteristic absorbance or fluorescence, allow for quantitative analysis and detection of specific compounds in complex mixtures.Furthermore, 4-Amino-3-chlorophenol hydrochloride has been investigated for its potential antimicrobial properties. Studies have shown that it exhibits inhibitory effects against certain bacteria and fungi. This property creates opportunities for its use in the development of disinfectants, preservatives, and antiseptic agents.In summary, 4-Amino-3-chlorophenol hydrochloride is primarily utilized in the production of oxidative hair dyes, acting as an intermediate in the synthesis of p-phenylenediamine. It offers advantages of durability, color stability, and resistance to fading, making it a valuable component in hair dye formulations