... density is 2.484(20Deg. C), easily soluble in water, but not on organic solution, absorbent to dampness, and ... Cu and Fe; It is a fine agent for water treatment. Application: For food grade, it is mainly used ... as P2O5: 7.5% max Iron, as Fe: 0.05% max PH of 1%water solution: 5.8-6.5 ... warehouse instead of in the open air, kept away from water, moisture and sunlight during transport, handled with care, ...