Purity, (as hydroxypropxy-) %:7.0-16.0
PH:5.0-7.5
Drying loss, %:≤8.0
Fe, %:≤0.010
Heavy metal, % :≤0.002
Residue on ignition, % :≤1.0
As, % :≤0.003
Chloride, %:≤0.20
Appearance: White or offwhite powder. Odorless.
Particle size: 100% through 100 mesh sieve.
Solubility: Partially dissolves in cold water and swells. Insoluble in organic solvents and hot water.