| Appearance: | Liquid |
|---|---|
| Assay: | 80% or 70% |
| pH (10% Aqueous): | 5.0-9.0 |
|
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| Item | Index |
| Appearance (20ºC) | Colourless to light yellow clear liquid |
| Assay | 80% or 70% |
| pH (10% aqueous) | 5.0-9.0 |
| Free amine and its salt | ≤2% |
| Chroma (Pt-Co) | ≤200# |
Didecyl dimethyl ammonium bromide (DDAB) is a quaternary ammonium compound with the chemical formula C20H44BrN. It is commonly used as a disinfectant, surfactant, and antiseptic agent in various industrial, medical, and household applications.
DDAB belongs to the family of quaternary ammonium compounds (QACs), which are known for their potent antimicrobial properties. It is composed of a long hydrophobic (water-repellent) alkyl chain with two shorter hydrophilic (water-attracting) methyl groups and a positively charged ammonium group. This structure enables DDAB to disrupt the cell membranes of microorganisms, leading to their inactivation and eventual death.
In the medical field, DDAB is often used as a disinfectant for surfaces, medical equipment, and instruments due to its broad-spectrum antimicrobial activity against bacteria, viruses, fungi, and even some enveloped viruses. It is effective against pathogens such as Staphylococcus aureus, Escherichia coli, and influenza virus.
In addition to its disinfectant properties, DDAB is also utilized as a surfactant in various industrial and household cleaning products. It helps to reduce the surface tension of liquids, allowing them to spread more easily and penetrate dirt and grease for effective cleaning.
However, it's important to note that DDAB, like other quaternary ammonium compounds, should be handled with care as it can be irritating to the skin, eyes, and respiratory tract at high concentrations. Proper safety precautions, such as wearing protective equipment and ensuring adequate ventilation, should be followed when working with DDAB-containing products.
Overall, Didecyl dimethyl ammonium bromide is a versatile compound with applications ranging from disinfection and sanitation to industrial and household cleaning, contributing to maintaining cleanliness and hygiene in various environments.
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