Boric Acid (USP-NF, BP, Ph. Eur.) pure, pharma grade

Boric Acid (USP-NF, BP, Ph. Eur.) pure, pharma grade
Content: 5 KGM
Physical Description:
Solid
Specification: Assay (titr., calc. on dried subst.)@99.5 - 100.5 %§Assay (titr.)@99.0 - 100.5 %§Appearance of solution@passes test§Identity@passes test§Solubility (EtOH 96 %)@passes test§pH (3.3 %; H2O)@3.8 - 4.8§Loss on drying@max. 0.5 %§Residue on ignition (CH3OH + HCl)@max. 0.1 %§Residual solvents (Ph. Eur./USP)@passes test§Organic substances@passes test§Sulfate@max. 0.045 %§Chloride@max. 0.002 %§Phosphate@max. 0.002 %§As@max. 0.0005 %§Fe@max. 0.001 %§Pb@max. 0.001 %§Cu@max. 0.001 %§Mg@max. 0.005 %§Ni@max. 0.001 %§Elemental impurities (according to ICH Q3D):@§Class 1 (Cd)@max. 0.5 ppm§Class 2B (Au)@max. 10 ppm§Class 2B (Rh)@max. 10 ppm§Class 2A (Co)@max. 5 ppm§Class 3 (Li)@max. 55 ppm§Class 1 (Pb)@max. 0.5 ppm§Class 1 (As)@max. 1.5 ppm§Class 1 (Hg)@max. 1.5 ppm§Class 2A (V)@max. 10 ppm§Class 2A (Ni)@max. 20 ppm§Class 2B (Tl)@max. 0.8 ppm§Class 2B (Pd)@max. 10 ppm§Class 2B (Ir)@max. 10 ppm§Class 2B (Os)@max. 10 ppm§Class 2B (Ru)@max. 10 ppm§Class 2B (Pt)@max. 10 ppm§Class 2B (Se)@max. 15 ppm§Class 2B (Ag)@max. 15 ppm§Class 3 (Sb)@max. 120 ppm§Class 3 (Ba)@max. 140 ppm§Class 3 (Mo)@max. 25 ppm§Class 3 (Cr)@max. 25 ppm§Class 3 (Cu)@max. 250 ppm§Class 3 (Sn)@max. 600 ppm