Overview
Dowfax is a trademarked line of anionic surfactants developed by Dow Chemical Company, primarily composed of alkyl diphenyl oxide disulfonates. These surfactants are renowned for their stability, low foam generation, and superior wetting capabilities, making them indispensable in industrial processes like emulsion polymerization and agrochemical formulations. First introduced in the mid-20th century, Dowfax products are engineered to perform under harsh conditions, including high electrolyte concentrations and extreme pH levels. Their versatility extends to household applications, such as detergents, where they enhance cleaning efficiency.
Physical and Chemical Properties
Dowfax surfactants typically appear as clear to pale yellow liquids with a density of 1.1–1.2 g/cm³. They exhibit high water solubility and thermal stability, with boiling points exceeding 100°C. Their molecular structure includes hydrophobic alkyl chains and hydrophilic disulfonate groups, enabling effective reduction of surface tension. Key chemical properties include resistance to hydrolysis and oxidation, even in acidic or alkaline environments. This stability makes them suitable for long-term storage and use in aggressive formulations, such as herbicide adjuvants or textile dyeing aids.
Main Applications
Dowfax surfactants are widely used in agrochemicals as emulsifiers and dispersants for pesticides and herbicides. Their ability to stabilize emulsions ensures uniform active ingredient distribution. In emulsion polymerization, they serve as critical components for producing latex paints, adhesives, and synthetic rubbers. The textile industry leverages Dowfax for dye leveling and fiber lubrication, while household cleaners benefit from their grease-cutting action. Specialty grades are also employed in oilfield chemicals and metalworking fluids, showcasing their broad utility.
Safety and Storage
While Dowfax surfactants are generally low in toxicity, direct contact with skin or eyes should be avoided. Personal protective equipment (PPE) such as gloves and goggles is recommended during handling. The products are non-flammable but should be stored away from strong oxidizers. Ideal storage conditions include cool, dry environments in sealed containers to prevent moisture absorption. Shelf life typically exceeds two years when stored properly. Spills should be contained with absorbent materials and disposed of according to local regulations.
B2B Procurement Guide
Procuring Dowfax surfactants requires attention to product grades (e.g., 2A1 for emulsion polymerization, 3B2 for agrochemicals). Buyers should confirm technical specifications like active content (commonly 40–45%) and pH range (6–8). Bulk purchases (drums or tankers) often reduce costs by 10–20%. Lead times vary by region and quantity, with samples available for testing. Certifications such as REACH or NSF may be required for specific markets. Partnering with authorized distributors ensures authenticity and compliance with safety data sheets (SDS).
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