For formulators and procurement managers in the personal care and detergent industries, sourcing the right ingredients is critical for product quality and consumer satisfaction. Cocamidopropyl Betaine (CAB) 35% is a versatile amphoteric surfactant, highly valued for its mildness, foaming, and conditioning properties. When you are looking to buy CAB 35%, understanding key specifications will ensure you obtain a product that meets your formulation requirements and safety standards. This guide outlines the essential parameters to scrutinize.

Active Matter Content: The concentration of the active ingredient is fundamental. For Cocamidopropyl Betaine 35%, the active matter typically ranges around 30-35%. A consistent and clearly stated active matter percentage ensures you are receiving the product as specified, allowing for accurate formulation calculations. Suppliers should provide this information on their product data sheets.

Appearance and Odor: High-quality CAB 35% is generally described as a colorless to pale yellow, clear liquid with a mild, characteristic odor. Significant deviations in color or a strong, unpleasant smell can indicate impurities or degradation, which might impact the final product's aesthetics and performance. Always check if the appearance matches the expected standard.

pH Value: The pH of a 1% aqueous solution of Cocamidopropyl Betaine usually falls within a mild range, typically between 5.0 and 8.0. A pH within this range signifies good stability and compatibility with other formulation ingredients. Extreme pH values could suggest issues with the manufacturing process or product stability.

Sodium Chloride Content: Sodium chloride is often present as a byproduct of the manufacturing process, used to adjust viscosity. While some level is acceptable, excessively high amounts can affect product properties and potentially lead to solubility issues. Reputable suppliers will specify the maximum allowable sodium chloride content, often below 7.0%.

Free Amine Content: The presence of free amines, particularly DMAPA (Dimethylaminopropylamine) and 3-dimethylaminopropylamine (DMAPA), is a critical consideration, as these are often linked to potential skin irritation. Lower free amine content is highly desirable, especially for products intended for sensitive skin or baby care. When you buy CAB 35%, inquire about the supplier's methods for minimizing these impurities and their typical free amine levels.

Viscosity: While not always a primary quality indicator, viscosity can be important for handling and formulation. Specified viscosity ranges (e.g., 1000-3000 cPs at 25°C) help ensure consistent product texture and flowability. Understanding these specifications will empower you to make informed purchasing decisions when sourcing Cocamidopropyl Betaine 35% from Chinese manufacturers, guaranteeing quality and performance for your product lines.