Zinc sulfate heptahydrate AGR

ZnSO₄·7H₂O
white vitriol, zinc vitriol
M.W: 287,54  CAS: 7446-20-0  EC: 231-793-3  EC INDEX: 030-006-00-9  
UN: 3077  IMDG: 9 III UN 3077  ADR: 9 III UN 3077   IATA: 9 III UN 3077  

• Appearance colourless crystal or white powder
• Assay 99.5 – 100.5%
• Iron (Fe) ≤ 0.0003%
• Substances insoluble in water (H₂O) ≤ 0.005%
• pH (5% water, 20°C) 4.4 – 5.6
• Nitrates (NO₃) ≤ 0.002%
• Copper (Cu) ≤ 0.0005%
• Ammonium (NH₄) ≤ 0.001%
• Chloride (Cl^–) ≤ 0.0003%
• Arsenic (As) ≤ 0.0001%
• Calcium (Ca) ≤ 0.002%
• Potassium (K) ≤ 0.001%
• Cadmium (Cd) ≤ 0.0001%
• Magnesium (Mg) ≤ 0.0003%
• Manganese (Mn) ≤ 0.0003%
• Sodium (Na) ≤ 0.001%
• Lead (Pb) ≤ 0.001%