Sodium 4-amino-6-chlorotoluene-3-sulphonate
Sodium 4-amino-6-chlorotoluene-3-sulphonate, identified by CAS number 6627-59-4, is a specialized organic salt widely utilized as a chemical intermediate in the synthesis of high-performance colorants. Structurally, it consists of a toluene backbone substituted with amino, chloro, and sulfonic acid groups, the latter being neutralized as a sodium salt to enhance solubility and stability in aqueous environments. This compound typically presents as a light-colored crystalline powder or paste. Its chemical reactivity is primarily driven by the amino group, which facilitates diazotization reactions, a critical step in the production of azo pigments. In industrial handling, the material requires standardized storage conditions, typically in a cool, dry environment, to maintain its chemical integrity and prevent degradation. As a versatile building block, it plays a fundamental role in the manufacturing of various red and maroon organic pigments, contributing to the stability and vibrancy of the final products used across multiple sectors.
• Pigment Synthesis: The primary application of Sodium 4-amino-6-chlorotoluene-3-sulphonate is as a diazo component in the production of azo pigments, most notably Pigment Red 48 (Permanent Red 2B) and Pigment Red 57:1 (Lithol Rubine BK). These pigments are valued for their excellent heat resistance and color strength.
• Printing Inks and Coatings: Due to its role in producing stable red pigments, this chemical is essential for the formulation of high-quality printing inks used in offset, gravure, and flexographic processes. It also finds use in industrial coatings and paints where lightfastness and chemical resistance are required.
• Plastics and Polymer Coloring: Pigments derived from this intermediate are extensively employed in the masterbatch industry for coloring plastics such as polyethylene (PE), polypropylene (PP), and PVC. The resulting colorants maintain their properties during high-temperature extrusion and molding processes.
• Textile Dyeing: Beyond pigments, the compound serves as a precursor for specific acid dyes used in the textile industry, providing reliable color fixation and durability on various fiber substrates.
Product Name: Sodium 4-amino-6-chlorotoluene-3-sulphonate
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