Potassium Disulfite GR 1kg
for analysis EMSURE®
Manufacturer: Merck
Catalog ID: 105057.1000
Stock: In Stock
Description
| Catalogue Number | 105057 |
| Synonyms | Potassium metabisulfite, Potassium pyrosulfite |
Product Information
| CAS number | 16731-55-8 |
| EC number | 240-795-3 |
| Hill Formula | K₂O₅S₂ |
| Chemical formula | K₂S₂O₅ |
| Molar Mass | 222.33 g/mol |
| HS Code | 2832 20 00 |
Physicochemical Information
| Melting Point | 150 °C (decomposition) |
| pH value | 3.0 - 4.5 (50 g/l, H₂O, 20 °C) |
| Bulk density | 1000 - 1300 kg/m3 |
| Solubility | 450 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat 2300 mg/kg |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Assay (iodometric) | ≥ 96 % |
| In water insoluble matter | ≤ 0.005 % |
| Chloride (Cl) | ≤ 0.005 % |
| As (Arsenic) | ≤ 0.0001 % |
| Cu (Copper) | ≤ 0.001 % |
| Fe (Iron) | ≤ 0.0005 % |
| Pb (Lead) | ≤ 0.001 % |
| Zn (Zinc) | ≤ 0.001 % |
