This standard describes monosodium phosphate, anhydrous and liquid, for use in the treatment of potable water, wastewater, and reclaimed water. The product described is an orthophosphate used as formulated and in blends to inhibit corrosion of water conveyance systems. The product described by this standard is also known as sodium phosphate, monobasic, anhydrous and liquid. This standard can be referenced in documents for purchasing and receiving monosodium phosphate, anhydrous and liquid, and can be used as a guide for testing the physical and chemical properties of monosodium phosphate samples. The stipulations of this standard apply when this document has been referenced and then only to monosodium phosphate, anhydrous and liquid, used in the treatment of potable water and reclaimed water.