Sodium Disulfite(Sodium Metabisulfite) GR 100grm
(sodium metabisulfite) for analysis EMSURE® ACS,Reag. Ph Eur
Manufacturer: Merck
Catalog ID: 106528.0100
Stock: In Stock
Description
| Catalogue Number | 106528 |
| Synonyms | Sodium metabisulfite, Sodium pyrosulfite, Disulfite, Pyrosulfite |
Product Information
| CAS number | 7681-57-4 |
| EC index number | 016-063-00-2 |
| EC number | 231-673-0 |
| Grade | ACS,Reag. Ph Eur |
| Hill Formula | Na₂O₅S₂ |
| Molar Mass | 190.11 g/mol |
| HS Code | 2832 10 00 |
Physicochemical Information
| Density | 2.36 g/cm3 (20 °C) |
| Melting Point | 150 °C (decomposition) |
| pH value | 3.5 - 5 (50 g/l, H₂O, 20 °C) |
| Bulk density | 1000 - 1200 kg/m3 |
| Solubility | 650 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat 1540 mg/kg |
| LD 50 dermal | LD50 Rat > 2000 mg/kg |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Assay (iodometric) | 98.0 - 100.5 % |
| Identity | passes test |
| Appearance of solution | passes test |
| pH-value (5 %; water) | 3.5 - 5.0 |
| Insoluble matter | ≤ 0.005 % |
| Chloride (Cl) | ≤ 0.005 % |
| Thiosulfate (S₂O₃) | ≤ 0.05 % |
| passes test | |
| Heavy metals (as Pb) | ≤ 0.001 % |
| As (Arsenic) | ≤ 0.0001 % |
| Fe (Iron) | ≤ 0.0005 % |
