Thermo Scientific™ Benzalkonium chloride 50% (w/w) in aqueous solution

Benzalkonium chloride (BAC) is a quaternary ammonium compound (QAC) widely used as a broad-spectrum antimicrobial agent, disinfectant, and surfactant. This Thermo Fisher Scientific formulation is supplied as a 50% (w/w) aqueous solution, with an alkyl chain distribution primarily between C₈ and C₁₆, optimized for chemical stability and biocidal activity.

This high-purity reagent is ideal for use in surface disinfection studies, microbiological testing, emulsification systems, and as a phase transfer catalyst in synthetic chemistry. It is also used in formulations for cleaning agents, industrial preservatives, and water treatment products.

Key Features

• 50% w/w active benzalkonium chloride in water
• Alkyl chain distribution from C₈ to C₁₆ for broad-spectrum efficacy
• High assay purity: 49–52% via argentometric titration
• Low free amine content (≤2%)
• Clear, colorless to pale yellow aqueous solution
• Stable under ambient storage conditions
• Supplied with full documentation (CoA, SDS, Lot traceability)

Chemical & Physical Properties

Packaging Options

Applications

• Biocidal & antimicrobial formulations: Research on disinfectants, sanitizers, and antiseptics
• Emulsifier and surfactant systems: Stabilization of oil-in-water mixtures
• Phase-transfer catalysis: Organic synthesis involving polar/nonpolar phase reactions
• Microbiology & laboratory cleaning solutions: Contaminant control and sterilization
• Industrial preservation: Water systems, adhesives, coatings, and textiles
• Toxicology & environmental testing: Studies of QAC effects and degradation

Safety & Handling

• Handle with appropriate PPE: gloves, goggles, and protective lab wear
• Avoid contact with skin, eyes, and mucous membranes
• Toxic to aquatic organisms; avoid environmental release
• Use in a well-ventilated area or under fume hood
• Refer to SDS for detailed hazard and disposal guidelines

Thermo Fisher Scientific Benzalkonium Chloride 50% Solution offers a dependable, high-purity formulation suitable for diverse antimicrobial, chemical synthesis, and industrial testing applications. Its optimized alkyl distribution (C₈–C₁₆) and tight specification limits ensure reliable performance in disinfection, surfactant systems, and lab research workflows where consistent biocidal properties are required.