出生地 |
China |
年级的标准 |
Reagent Grade |
Molecular formula: H3PO4 No. of standard: GB/T 2091-2003 ItemSpecifications85%Supper classFirst classQualifiedColor, Hazen unit ≤203040H3PO4, % ≥ 85.085.085.0Chloride (Cl), % ≤ 0.00050.00050.0005Sulfate (SO4 -2 ), % ≤ 0.0030.0050.01Iron (Fe), % ≤ 0.0020.0020.005Arsenic (As), % ≤0.00010.0050.01Heavy metals (Pb), % ≤ 0.0010.0010.05Appearance Colorless clear or lightish thick liquid