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Source Quality Benzalkonium chloride (8001-54-5) from LEAPChem

Nov. 2019/3/26 14:27:14 By LEAP Chem


LEAPChem - Pharmaceutical Chemicals is a premier supplier of pharmaceutical chemicals and other chemical raw materials for global customers including drug manufacturers, universities, research labs, R&D centers, and other industries that use chemical raw materials such as polymers, textiles, agriculture, coatings, etc. As an ISO 9001:2015 certified company, our team of experts in customer service, product sourcing, logistics, regulatory and compliance operate at the highest standard. LEAPChem's experienced sales team will work tirelessly to find the chemicals you need for a price you can afford. LEAPChem - Pharmaceutical Chemicals is happy to highlight Benzalkonium chloride, a very promising chemical in the global chemical market.

 

Basic Information of Benzalkonium chloride

Chemical Name: Benzalkonium chloride

Cas No.: 8001-54-5

Molecular Formula: variable

Chemical Structure:

 8001-54-5.png

 

Benzalkonium chloride, also known as BZK, BKC, BAC, alkyldimethylbenzylammonium chloride and ADBAC, is a type of cationic surfactant. It is an organic salt classified as a quaternary ammonium compound. It has three main categories of use: as a biocide, a cationic surfactant, and as a phase transfer agent. ADBACs are a mixture of alkylbenzyldimethylammonium chlorides, in which the alkyl group has various even-numbered alkyl chain lengths.

Depending on purity, benzalkonium chloride ranges from colourless to a pale yellow (impure). Benzalkonium chloride is readily soluble in ethanol and acetone. Dissolution in water is slow. Aqueous solutions should be neutral to slightly alkaline. Solutions foam when shaken. Concentrated solutions have a bitter taste and a faint almond-like odour.

Standard concentrates are manufactured as 50% and 80% w/w solutions, and sold under trade names such as BC50, BC80, BAC50, BAC80, etc. The 50% solution is purely aqueous, while more concentrated solutions require incorporation of rheology modifiers (alcohols, polyethylene glycols, etc.) to prevent increases in viscosity or gel formation under low temperature conditions.

Benzalkonium chloride is a frequently used preservative in eye drops; typical concentrations range from 0.004% to 0.01%. Stronger concentrations can be caustic and cause irreversible damage to the corneal endothelium.

Although historically benzalkonium chloride has been ubiquitous as a preservative in ophthalmic preparations, its ocular toxicity and irritant properties, in conjunction with consumer demand, have led pharmaceutical companies to increase production of preservative-free preparations, or to replace benzalkonium chloride with preservatives which are less harmful.

The greatest biocidal activity is associated with the C12 dodecyl & C14 myristyl alkyl derivatives. The mechanism of bactericidal/microbicidal action is thought to be due to disruption of intermolecular interactions. This can cause dissociation of cellular membrane lipid bilayers, which compromises cellular permeability controls and induces leakage of cellular contents. Other biomolecular complexes within the bacterial cell can also undergo dissociation. Enzymes, which finely control a wide range of respiratory and metabolic cellular activities, are particularly susceptible to deactivation. Critical intermolecular interactions and tertiary structures in such highly specific biochemical systems can be readily disrupted by cationic surfactants.

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References:

https://en.wikipedia.org/wiki/Benzalkonium_chloride

https://www.ncbi.nlm.nih.gov/pubmed/28885313

https://www.ncbi.nlm.nih.gov/pubmed/28245636

 

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