Appearance and odour : Off-white granular powder
Boiling/Melting Point @760 mm Hg : None
pH : Vapor Pressure mm Hg @20°C
Vapor Density (Air=1) : None
Percent Volatile by Weight (%):
Specific Gravity or Bulk Density : 0.4 - 0.6:
Solubility in Water : soluble, partly dispersible
Evaporation Rate (BuAc = 1)
Appearance : White powder
Odor : Sharp odor
General formulation to calculate how much bleach is needed to add to a tank or a pipeline to disinfect it to a given chlorine residual using a given disinfectant. Usually someone wants to know how to meet an AWWA Standard (like C651-92, Disinfection of Water Mains). The equation below should be used to estimate the amount of sodium / Calcium hypochlorite (Chlorine Water is 6.00% sodium hypochlorite) needed to disinfect a given quantity of water to a desired chlorine concentration.
req'd residual in ppm |
For example , say you had installed a new 5,000 gallon tank and wanted to make sure that you had at least a 100 ppm solution of chlorine in it.
How much 6.00% Hypochlorite would you need to add ?
How much 12% Hypochlorite solution would you need ?
If you use calcium hypochlorite (the white, powder version of chlorine, like HTH pool cleaner), the equation becomes:
req'd residual in PPM |
Let's assume that we still need to disinfect 5,000 gallons at 100 ppm.
How many pounds of 65% calcium hypochlorite (HTH pool cleaner) are needed?
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