It is sometimes added to blends which contain calcium nitrate, magnesium nitrate and potassium nitrate to produce water-soluble formulas such as 15-5-15 and 13-2-20.
In certain formulations, it is added to blends of calcium nitrate, magnesium nitrate, and potassium nitrate to produce soluble mixes like 15-5-15 and 13-2-20.