Potassium Chromate 250g
for analysis EMSURE® ACS,Reag. Ph Eur
Manufacturer: Merck
Catalog ID: 104952.0250
Stock: In Stock
Description
| Catalogue Number | 104952 |
| Synonyms | chromic acid potassium salt |
Product Information
| CAS number | 7789-00-6 |
| EC index number | 024-006-00-8 |
| EC number | 232-140-5 |
| Grade | ACS,Reag. Ph Eur |
| Hill Formula | CrK₂O₄ |
| Chemical formula | K₂CrO₄ |
| Molar Mass | 194.19 g/mol |
| HS Code | 2841 50 00 |
Physicochemical Information
| Density | 2.73 g/cm3 (18 °C) |
| Melting Point | 985 °C |
| pH value | 9.0 - 9.8 (50 g/l, H₂O, 20 °C) |
| Bulk density | 1400 kg/m3 |
| Solubility | 637 g/l |
Storage and Shipping Information
| Storage | Store below +30°C. |
Specifications
| Assay (iodometric) | ≥ 99.5 % |
| In water insoluble matter | ≤ 0.005 % |
| pH-value (5 %; water) | 9.0 - 9.8 |
| Chloride (Cl) | ≤ 0.001 % |
| Sulfate (SO₄) | ≤ 0.01 % |
| Ca (Calcium) | ≤ 0.005 % |
| Na (Sodium) | ≤ 0.02 % |
| Pb (Lead) | ≤ 0.005 % |
