Sodium Sulfite Anhydrous 500 Gm
anhydrous for analysis EMSURE® Reag. Ph Eur
Manufacturer: Merck
Catalog ID: 106657.0500
Stock: In Stock
Description
| Catalogue Number | 106657 |
Product Information
| CAS number | 7757-83-7 |
| EC number | 231-821-4 |
| Grade | Reag. Ph Eur |
| Hill Formula | Na₂O₃S |
| Chemical formula | Na₂SO₃ |
| Molar Mass | 126.04 g/mol |
| HS Code | 2832 10 00 |
Physicochemical Information
| Density | 2.63 g/cm3 (20 °C) |
| Melting Point | >500 °C (decomposition) |
| pH value | 8.8 - 10 (50 g/l, H₂O, 20 °C) |
| Bulk density | 1480 kg/m3 |
| Solubility | 220 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat 2610 mg/kg |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Assay (iodometric) | 97.0 - 100.5 % |
| Identity | passes test |
| Appearance of solution | passes test |
| Insoluble matter | ≤ 0.005 % |
| Free acid | passes test |
| Titrable free base | ≤ 0.03 meq/g |
| Chloride (Cl) | ≤ 0.02 % |
| Thiosulfate (S₂O₃) | ≤ 0.1 % |
| Heavy metals (as Pb) | ≤ 0.0005 % |
| As (Arsenic) | ≤ 0.0001 % |
| Cu (Copper) | ≤ 0.0005 % |
| Fe (Iron) | ≤ 0.001 % |
| Pb (Lead) | ≤ 0.0005 % |
| Se (Selenium) | ≤ 0.0004 % |
| Zn (Zinc) | ≤ 0.001 % |
