Synonyms: |Crimidesa; Mirabilite; Thenardite; Sal mirabil; Natriumsulfate; Glaubers Salt||CAS No: |7757-82-6||Molecular Formula:|Na2SO4||Molecular Weight:|142.0||Purity: |≥99%||Appearance: |White crystalline powder||Solubility: |Colorless, clear, complete||pH (5%): |5.2-9.2||Insoluble Matter: |≤0.01%||Loss on Ignition: |≤0.5%||Chloride: |≤0.001%||Nitrogen Compounds (N): |≤0.0005%||Heavy Metals: |≤0.0005%||Iron: |≤0.001%||Calcium:|≤0.01% ||Magnesium:|≤0.005%||Potassium:|≤0.01%||Phosphate:|≤0.001%||Melting Point:|884°C(lit.)||Boiling Point:|1700°C||Density:|2.68g/mL at 25°C(lit.)|refractive index |1.484||Storage and Stability:|Store at RT. Stable for 12 months after receipt. Hygroscopic. Keep tightly closed and desiccated.||Meets or exceeds ACS Specifications