For any chemical procurement, understanding the precise specifications of the product is fundamental to ensuring its suitability for intended applications and to maintaining product quality. Aluminum Ammonium Sulfate (CAS 7784-25-0) is no exception. Manufacturers and procurement specialists must be well-versed in its key characteristics, such as appearance, assay, and impurity levels, to make informed purchasing decisions. Sourcing from a reputable China manufacturer that clearly outlines these details is a critical first step.

The most common specification for Aluminum Ammonium Sulfate is its appearance. Typically, it is supplied as a white powder or in crystalline block form. This visual characteristic is an initial indicator of product quality and consistency. Alongside appearance, the assay, which denotes the purity of the compound, is of utmost importance. High-quality Aluminum Ammonium Sulfate, especially for sensitive applications like food additives or pharmaceuticals, should exhibit an assay of 99% or higher, often specified as ≥99%. A supplier that provides this level of purity, often meeting standards like USP, BP, EP, or FCC, demonstrates a strong commitment to quality.

Beyond the primary assay, critical impurity levels must also be considered. Specifications often include limits for water content (e.g., ≤4.0%), water-insoluble matter (e.g., ≤0.20%), and specific heavy metals such as Arsenic (As), Lead (Pb), and Fluoride. For example, limits for As and Pb are often specified in mg/kg (e.g., ≤2 mg/kg for As, ≤20 mg/kg for Heavy Metals, ≤10 mg/kg for Pb). Understanding these parameters is crucial for applications where even trace impurities can affect performance or safety. When you plan to buy Aluminum Ammonium Sulfate, always request the detailed specification sheet.

Manufacturers in China who provide transparent and comprehensive specification sheets, alongside competitive pricing, are valuable partners for businesses worldwide. By meticulously reviewing these details, buyers can confidently purchase Aluminum Ammonium Sulfate that meets their exact requirements, ensuring successful outcomes in their manufacturing processes and product formulations. This focus on specifications is what distinguishes a reliable supplier from the rest.