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| LC5403 Sodium disulfite (sodium metabisulfite) extra pure Ph Eur,BP,JP,NF,E 223 |
| Order number | Packaging | Quantity | Price € |
| AC32403 | Plastic bottle | 5 kg | Inquire |
| AC32403 | Double PE Sack | 25 kg | Inquire |
| Product information | |
| Grade | Ph Eur,BP,JP,NF,E 223 |
| Synonyms | Sodium metabisulfite, Sodium pyrosulfite, Disulfite, Pyrosulfite |
| Hill Formula | Na2O5S2 |
| HS Code | 2832 10 00 |
| EC number | 231-673-0 |
| Molar mass | 190.11 g/mol |
| EC index number | 016-063-00-2 |
| CAS number | 7681-57-4 |
| Chemical and physical data | |
| Solubility | 650 g/l (20 °C) |
| Melting point | ca.150 °C (decomposition) |
| Molar mass | 190.11 g/mol |
| Density | 2.36 g/cm3 (20 °C) |
| Bulk density | 1000 – 1200 kg/m3 |
| pH value | 4.0 – 4.8 (50 g/l, H2O, 20 °C) |
| Safety information according to GHS | |
| Hazard Statement(s) | H302: Harmful if swallowed. H318: Causes serious eye damage. EUH031: Contact with acids liberates toxic gas. |
| Precautionary Statement(s) | P280: Wear protective gloves/ protective clothing/ eye protection/ face protection. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P313: Get medical advice/ attention. |
| Signal Word | Danger |
| Hazard Pictogram(s) |   |
| RTECS | UX8225000 |
| Storage class | 10 – 13 Other liquids and solids |
| WGK | WGK 1 slightly water endangering |
| Disposal | 6 Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E. |
| Safety information | |
| R Phrase | R 22-31-41 Harmful if swallowed.Contact with acids liberates toxic gas.Risk of serious damage to eyes. |
| S Phrase | S 26-39-46 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear eye/face protection.If swallowed, seek medical advice immediately and show this container or label. |
| Categories of danger | harmful, irritant |
| Hazard Symbol |  Harmful |
| Transport information | |
| Declaration (transport by sea) IMDG-Code | No Dangerous Good |
| Declaration (transport by air) IATA-DGR | No Dangerous Good |
| Toxicological data | |
| LD 50 oral | LD50 rat 1540 mg/kg |
| LD 50 dermal | LD50 rat > 2000 mg/kg |
| Specifications | |
| Assay – iodometric |
97.0 – 100.0 % |
| – iodometric, SO2 | 65.4 – 67.4 % |
| Identity | passes test |
| Appearance of solution | passes test |
| pH-value – 5 %; water |
3.5 – 5.0 |
| – 10 %; water | 4.0 – 5.0 |
| Chloride (Cl) | ≤ 0.01 % |
| Heavy metals (as Pb) | ≤ 0.001 % |
| Thiosulphate (S2O3) | passes test |
| Thiosulfate (S2O3) | ≤ 0.02 % |
| As (Arsenic) | ≤ 0.0002 % |
| Fe (Iron) | ≤ 0.001 % |
| Hg (Mercury) | ≤ 0.0001 % |
| Pb (Lead) | ≤ 0.0005 % |
| Se (Selenium) | ≤ 0.0006 % |
| Residual solvents (Ph.Eur./USP/ICH) | excluded by production process |