Chlorine (Cl) is among the ten highest volume chemicals manufactured. It is produced commercially by electrolysis of sodium chloride brine. Commercially we find Chorine in the form of sodium hypochlorite, commonly known as chlorine bleach. The word “bleach” is a generic word meaning “to turn white”.
Sodium hypochlorite is the most commonly used disinfecting and cleaning agent in the developed world. First introduced in the late 19th century to treat sepsis, chlorine bleach is now used in daily life for a variety of applications including:
- water and food disinfection
- surface cleaning
Advantages of bleach include low cost, ease of use, residual protection, deodorization and a strong germicide.
A Chlorine solution works well to remove mold and fungus from building exterior walls, sidewalks, driveways, pavers etc. It is also used commercially on equipment to kill bacteria in manufacturing plants, dairies, swimming pools, restrooms etc.
We recommend using the solo professional 475 sprayer when using a chlorine mixture. The diaphragm sprayer is best suited applications requiring the use of chlorine.
Below is chlorine mixture ratio guide for different cleaning applications when using the Solo 475 sprayer.
Moss and algae
T o remove slippery and unsightly moss and algae on brick, concrete, or stone walkways,
scrub them with a solution of 1½ cup chlorine bleach in 7.5L water
Mildew and other stains off unpainted cement, patio stones, or stucco.
Mix a solution of 1 cup chlorine bleach in 7.5L water. Scrub vigorously with a stiff or wire brush and rinse. If any stains remain, scrub again using 1/2 cup washing soda (sodium carbonate) dissolved in 7.5L warm water
Remove mold and mildew from the grout between your bathroom tiles
. Mix equal parts of chlorine bleach and water in a solo 475 sprayer, and spray it over grout. Let it sit for 15 minutes, then scrub with a stiff brush and rinse off.
Concentration of sodium hypochlorite in commonly used products
- Household bleach sold for use in laundering clothes is a 3-8% solution of sodium hypochlorite at the time of manufacture.
- A 10-25% solution of sodium hypochlorite is, according to Univar’s safety sheet, supplied with synonyms or trade names bleach.
- Liquid chlorine sold for swimming pools typically has a 12.5% solution of sodium hypochlorite at time of sale. This reduces in concentration over time.
- A 12% solution is widely used in waterworks for the chlorination of water, and a 15% solution is more commonly used for disinfection of waste water in treatment plants. Sodium hypochlorite can also be used for point-of-use disinfection of drinking water