Didecyl Dimethyl Ammonium Chloride (DDAC), identified by CAS number 7173-51-5, is a prominent quaternary ammonium compound widely employed across various industries due to its robust antimicrobial efficacy and surfactant properties. As a manufacturer and supplier of industrial chemicals, understanding the detailed properties and safety profile of DDAC is crucial for its effective and responsible application. This insight helps procurement managers and R&D scientists make informed decisions when they look to buy or formulate with this versatile chemical.

DDAC is characterized by its appearance as a colorless to light yellow liquid. It is a cationic surfactant, meaning it possesses a positive charge, which contributes to its ability to interact with negatively charged microbial surfaces and other substrates. This property is fundamental to its function as a biocide, where it disrupts cell membranes, leading to cell death. Its broad-spectrum activity against bacteria, fungi, and viruses makes it highly valuable in applications demanding stringent microbial control.

Key chemical properties that make DDAC a preferred choice for many industrial applications include its stability across a wide pH range (typically 2-10) and its compatibility with various other chemical components, including nonionic and amphoteric surfactants. This allows for the formulation of complex and effective cleaning and disinfection products. Furthermore, DDAC exhibits good tolerance to hard water, meaning its antimicrobial efficacy is not significantly reduced in the presence of mineral ions, a common challenge in many water-based systems. This makes it an ideal ingredient for water treatment and laundry applications.

When considering the safety of DDAC, it is important to note that while it is highly effective, it also requires careful handling. As identified by regulatory bodies and safety data sheets, DDAC can be a skin and eye irritant, and is harmful if swallowed. Therefore, when working with DDAC, especially in concentrated forms, appropriate personal protective equipment (PPE) such as gloves and eye protection should be used. Proper ventilation is also recommended to minimize inhalation exposure. Responsible sourcing from a trusted manufacturer ensures that you receive SDS and handling guidelines to promote safe usage.

The applications of DDAC span critical areas such as industrial water treatment, disinfection in various settings, preservation of consumer goods, and even in textiles and wood treatment for antimicrobial protection. For businesses looking to leverage these capabilities, understanding the product's properties and adhering to safety guidelines are paramount. By partnering with a reliable supplier, you can access high-quality DDAC and the technical support needed to utilize it effectively. When considering price and availability, direct sourcing from established chemical manufacturers in China offers a strategic advantage.