Answer to Question #25080 in Organic Chemistry for dora

Question

how do you make simple bleach using calcium hypochlorite? and how do you higher the concentration of it?

Answer 1

To make a chlorine bleach solution using calcium hypochlorite, here are some ways:

To make a concentrated chlorine solution that you can use for disinfecting water (or to be used in maintaining a clean and sanitary living environment), you’ll want to use calcium hypochlorite that has around 70% available chlorine.

To make the homemade chlorine bleach solution, you’ll need to do the following:
Mix 2 level Tablespoons of Calcium Hypochlorite to 3 cups of water.

mL of stock chlorine required = (desired concentration (mg/L)*number of gallons to be treated)/18.12

The desired concentration refers to how much chlorine in mg/L you want the disinfected water to have. A recommended amount is 7 mg/L of concentration. This equates to adding 8 drops of household liquid bleach to 1 gallon of water (the recommended amount when disinfecting water with household bleach). Given these amounts, if you wanted to disinfect 1 gallon of water with the homemade chlorine solution, the formula would be as follows:
(7*1)/18.12
This equates to 0.38mL or 8 drops of the concentrated solution per gallon of water. Just like normal household bleach! So the 3 step process is as follows:
Place 8 drops of homemade chlorine bleach in 1 gallon of water. Let stand for 30 min. If water is still cloudy, repeat steps until clear; otherwise it is ready to drink. Keep in mind, that once the homemade chlorine bleach is made it will follow the same shelf-life limitations as standard household liquid bleach. So be sure to only make amounts you will be using within that time frame.