The term ".5% w/w benzalkonium chloride solution" refers to a liquid solution containing benzalkonium chloride as the active ingredient in a concentration of 0.5% by weight.
Here's what each part of the term means:
0.5%: The number "0.5%" indicates the concentration of benzalkonium chloride in the solution. It means that for every 100 grams of the solution, there are 0.5 grams of benzalkonium chloride.
w/w: The "w/w" stands for "weight by weight." This means that the concentration is expressed as a percentage by weight, indicating the ratio of the weight of the active ingredient (benzalkonium chloride) to the total weight of the solution.
Benzalkonium chloride: Benzalkonium chloride is a common antiseptic and disinfectant agent. It is used in various products, such as hand sanitizers, surface disinfectants, and some medical preparations.
In summary, a 0.5% w/w benzalkonium chloride solution means that the solution contains 0.5 grams of benzalkonium chloride for every 100 grams of the solution's total weight. This information is essential as it helps in understanding the concentration and dosing of the active ingredient in the solution for specific applications, such as disinfection or medical use.