Didecyldimethylammonium

Didecyldimethylammonium chloride (often abbreviated as DDAC) is a type of quaternary ammonium compound that is used as an antiseptic, disinfectant, and surfactant. It is a colorless liquid that is soluble in water and alcohol.

Chemical Structure

DDAC is a cationic surfactant with the chemical formula C22H48ClN. It consists of two decyl chains (C10H21) attached to a nitrogen atom, which is also bonded to two methyl groups (CH3) and a chloride ion (Cl-). The presence of the positively charged nitrogen atom allows DDAC to interact with negatively charged surfaces, such as bacterial cell walls, leading to its antiseptic and disinfectant properties.

Uses

DDAC is widely used in a variety of applications due to its antimicrobial properties. It is commonly found in disinfectant wipes, sprays, and other cleaning products. In addition to its use as a disinfectant, DDAC is also used in the textile industry as a fabric softener and in the personal care industry in products such as shampoos and conditioners.

Safety and Toxicity

While DDAC is generally considered safe for use in household and industrial settings, it can cause irritation to the skin and eyes upon direct contact. Ingestion or inhalation of DDAC can also lead to adverse health effects, such as nausea, vomiting, and respiratory distress. Therefore, it is important to handle DDAC with care and use appropriate protective equipment.

Regulation

In the United States, products containing DDAC are regulated by the Environmental Protection Agency (EPA). The EPA classifies DDAC as a pesticide due to its ability to kill bacteria, viruses, and other microorganisms. As such, products containing DDAC must meet certain safety and efficacy standards set by the EPA.

See Also

• Quaternary ammonium compound
• Disinfectant
• Antiseptic