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| LC4936 Potassium disulfate (Potassium pyrosulfate) for analysis EMSURE ACS |
| Order number | Packaging | Quantity | Price € |
| AC31936 | Plastic bottle | 1 kg | 54.9 |
| AC31936 | Plastic bottle | 5 kg | 224.1 |
| AC31936 | Fibre carton | 50 kg | Inquire |
| Product information | |
| Grade | ACS |
| Synonyms | Potassium pyrosulfate |
| Hill Formula | K2O7S2 |
| HS Code | 2833 29 80 |
| EC number | 232-216-8 |
| Molar mass | 254.33 g/mol |
| CAS number | 7790-62-7 |
| Chemical and physical data | |
| Solubility | (20 °C) soluble |
| Melting point | 325 °C |
| Molar mass | 254.33 g/mol |
| Density | 2.25 g/cm3 (25 °C) |
| Bulk density | 830 kg/m3 |
| pH value | 0.8 (50 g/l, H2O, 20 °C) |
| Safety information | |
| S Phrase | S 22-24/25 Do not breathe dust.Avoid contact with skin and eyes. |
| Storage class | 10 – 13 Other liquids and solids |
| WGK | WGK 1 slightly water endangering |
| Disposal | 14 Inorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535). |
| Specifications | |
| Assay (acidimetric, as K2S2O7) | 97.5 – 100.0 % |
| Acidity (as H2SO4) | 37.5 – 38.6 % |
| Insoluble and by ammoniumhydroxide precipitated matter | ≤ 0.01 % |
| Chloride (Cl) | ≤ 0.0005 % |
| Phosphate (PO4) | ≤ 0.001 % |
| Total nitrogen (N) | ≤ 0.002 % |
| Heavy metals (as Pb) | ≤ 0.001 % |
| Al (Aluminium) | ≤ 0.001 % |
| As (Arsenic) | ≤ 0.0005 % |
| Ca (Calcium) | ≤ 0.002 % |
| Fe (Iron) | ≤ 0.0005 % |
| Mg (Magnesium) | ≤ 0.0005 % |
| Na (Sodium) | ≤ 0.01 % |
| Water (H2O) | ≤ 2.5 % |