Sodium Dichromate Dihydrate 250g
for analysis EMSURE® ACS
Manufacturer: Merck
Catalog ID: 106336.0250
Stock: In Stock
Description
| Catalogue Number | 106336 |
| Synonyms | Sodium bichromate, Sodium pyrochromate |
Product Information
| CAS number | 7789-12-0 |
| EC index number | 024-004-00-7 |
| EC number | 234-190-3 |
| Grade | ACS |
| Hill Formula | Cr₂Na₂O₇*2H₂O |
| Chemical formula | Na₂Cr₂O₇ * 2 H₂O |
| Molar Mass | 298.00 g/mol |
| HS Code | 2841 30 00 |
Physicochemical Information
| Boiling point | 400 °C (1013 hPa) (decomposition) |
| Density | 2.35 g/cm3 (20 °C) |
| Melting Point | 356.7 °C (anhydrous substance) |
| pH value | 3.5 (100 g/l, H₂O, 20 °C) |
| Bulk density | 1200 kg/m3 |
| Solubility | 731.8 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat 50 mg/kg |
| LD 50 dermal | LD50 Rabbit 1000 mg/kg |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Assay (iodometric) | 99.5 - 100.5 % |
| Identity | passes test |
| Insoluble matter | ≤ 0.005 % |
| Chloride (Cl) | ≤ 0.002 % |
| Sulfate (SO₄) | ≤ 0.01 % |
| Al (Aluminium) | ≤ 0.002 % |
| Ca (Calcium) | ≤ 0.002 % |
| Cu (Copper) | ≤ 0.001 % |
| Fe (Iron) | ≤ 0.002 % |
| K (Potassium) | ≤ 0.01 % |
| Mg (Magnesium) | ≤ 0.005 % |
| Pb (Lead) | ≤ 0.002 % |
