Kathon CG
Overview
Kathon CG is a blend of two isothiazolinone compounds, 5-chloro-2-methyl-4-isothiazolin-3-one (CMIT) and 2-methyl-4-isothiazolin-3-one (MIT), commonly used as a preservative in cosmetics and personal care products. It is highly effective against a broad spectrum of bacteria and fungi, making it a popular choice for manufacturers seeking to extend the shelf life of their products. The use of Kathon CG is regulated in many countries due to its potential to cause skin sensitization. Despite this, it remains widely used in shampoos, conditioners, and other water-based formulations where microbial contamination is a concern.
Physical and Chemical Properties
Kathon CG is a clear to pale yellow liquid with a mild odor. It is soluble in water and most organic solvents, which makes it easy to incorporate into various formulations. Its stability over a wide pH range (2-9) ensures its effectiveness in diverse product types. The active ingredients, CMIT and MIT, work synergistically to provide broad-spectrum antimicrobial activity. CMIT is particularly effective against bacteria, while MIT targets fungi. Together, they offer comprehensive protection against microbial growth.
Main Applications
Kathon CG is primarily used as a preservative in cosmetics and personal care products, such as shampoos, conditioners, body washes, and lotions. Its ability to prevent microbial growth at low concentrations (typically 0.0015-0.0035%) makes it a cost-effective solution for manufacturers. Beyond cosmetics, Kathon CG is also used in industrial applications, including adhesives, paints, and coatings, where microbial contamination can compromise product quality. Its versatility and efficacy have made it a staple in many formulations.
Safety and Storage
While Kathon CG is highly effective, it is also a known skin sensitizer. Regulatory bodies, such as the European Union and the U.S. FDA, have established strict limits on its concentration in consumer products (e.g., 0.0015% in leave-on products). Proper handling and adherence to these limits are essential to minimize risks. Storage conditions are critical to maintaining the stability of Kathon CG. It should be kept in a cool, dry place away from direct sunlight. Containers should be tightly sealed to prevent evaporation or contamination.
B2B Procurement Guide
When sourcing Kathon CG, B2B buyers should prioritize suppliers with certifications such as ISO 9001 or GMP, ensuring product quality and consistency. It is also important to verify that the supplier complies with regional regulations, as restrictions on Kathon CG vary by country. Price negotiations should consider factors such as volume discounts, packaging options, and delivery terms. Buyers should also request samples to test compatibility with their formulations before committing to large orders.
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