Zinc

Location:  Group 12, Period 4
Atomic Weight:  65.389
Coordination Number:  4
Chemical Form in Solution:  Zn(OH)(aq)¹⁺

Storage & Handling:  Keep tightly sealed when not in use. Store and use at 20 ± 4°C. Do not pipet from container. Do not return portions removed for pipetting to container.

Chemical Compatibility:  Stable in HCl, HNO₃, H₂SO₄, HF and H₃PO₄. Avoid basic media that promotes formation of insoluble carbonate and hydroxide. Stable with most metals and inorganic anions in acidic media.

Stability:  2-100 ppb levels stable for months in 1% HNO₃ / LDPE container. 1-10,000 ppm solutions chemically stable for years in 1-5% HNO₃ / LDPE container.

Zn Containing Samples (Preparation & Solution):  Metal (soluble in HNO₃); Oxides (soluble in HCl); Ores (dissolve in HCl / HNO₃); Organic based (dry ash at 450°C and dissolve ash in HCl), (Sulphuric / peroxide acid digestion).