Trisodium Phosphate Anhydrous BP

Risodium phosphate was at one time extensively used in formulations for a variety of consumer-grade soaps and detergents, and the most common use for trisodium phosphate has been in cleaning agents. The  ph  of a 1% solution is 12 (I.E., very  basic), and the solution is sufficiently alkaline to  saponify  grease and oils. In combination with  surfactants, tsp is an excellent agent for cleaning everything from laundry to concrete driveways. This versatility and low manufacturing price made tsp the basis for a plethora of cleaning products sold in the mid-20th century. Tsp is still sold and used as a cleaning agent, but since the late 1960s, its use has diminished in the united states and many other parts of the world because, like many phosphate-based cleaners, it is known to cause extensive  eutrophication  of lakes and rivers once it enters a water system.[8]  substitutes are generally not as effective.

Tsp is commonly used after cleaning a surface with  mineral spirits  to remove hydrocarbon residues and may be used with household  chlorine bleach  in the same solution without hazardous reactions.[citation needed]  this mixture is particularly effective for removing  mildew, but is less effective at removing mold.[citation needed]

Although it is still the active ingredient in some toilet bowl-cleaning tablets, tsp is generally not recommended for cleaning bathrooms because it can stain metal fixtures and can damage  grout

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