Na2S2O4
Properties
| Salt name | Sodium Dithionite |
| Formula | Na2S2O4 |
| Trade names (REACH) | Albite A Albite AF Albite B Albite D Albite DE Albite E Albite EB Albite EF Albite LA Albite LEF Albite PB Albite PC Albite PM Disodium dithionite Disodium hydrosulfite Dithionous acid, disodium salt (8CI, 9CI) Hydrosulfit E (PRD 30496991) Hydrosulfit F (PRD 30497001) Hydrosulfit Konz. BASF (PRD 30048423) Hydrosulfit P Natriumdithionit Sodium dithionite Sodium dithionite (Na2(S2O4)) Sodium dithionite (Na2S2O4) Sodium hydrosulfite Sodium hydrosulfite (Na2S2O4) Sodium hyposulfite |
| Molar Mass (g/mol) | 174,11 |
| CAS Number | 7775-14-6 |
| EC Number | 231-890-0 |
| Odor | faint sulfur odor |
| Density (g/cm3) | 2,38 |
| Melting Point ( °C) | 52 |
| Boiling Point ( °C) | decomposes |
| Solubility in Water (g/100g H2O) | 18.2 (20 °C) |
| Qualitative Solubility | slightly soluble in alcohol |
Uses at Industrial Sites
Sodium Dithionite (Na2S2O4) uses at industrial sites according to REACH descriptors: Product Category and Sector of Use. Data retrieved from ECHA registered substances database: https://echa.europa.eu/registration-dossier/-/registered-dossier/15288/3/1/4.
| Sector of End use (SU) | |
| CODE | NAME |
| SU 2a | Mining, (without offshore industries) |
| SU 2b | Offshore industries |
| SU 5 | Manufacture of textiles, leather, fur |
| SU 6b | Manufacture of pulp, paper and paper products |
| SU 7 | Printing and reproduction of recorded media |
| SU 8 | Manufacture of bulk, large scale chemicals (including petroleum products) |
| SU 9 | Manufacture of fine chemicals |
| SU 13 | Manufacture of other non-metallic mineral products, e.g. plasters, cement |
| SU 14 | Manufacture of basic metals, including alloys |
| SU 15 | Manufacture of fabricated metal products, except machinery and equipment |
| SU 16 | Manufacture of computer, electronic and optical products, electrical equipment |
| SU 17 | General manufacturing, e.g. machinery, equipment, vehicles, other transport equipment |
| SU 19 | Building and construction work |
| SU 20 | Health services |
| SU 23 | Electricity, steam, gas water supply and sewage treatment |
| Product Category (PC) | |
| CODE | NAME |
| PC 1 | Adhesives, sealants |
| PC 2 | Adsorbents |
| PC 3 | Air care products |
| PC 4 | Anti-Freeze and de-icing products |
| PC 7 | Base metals and alloys |
| PC 8 | Biocidal products |
| PC 9a | Coatings and paints, thinners, paint removers |
| PC 9b | Fillers, putties, plasters, modelling clay |
| PC 13 | Fuels |
| PC 14 | Metal surface treatment products |
| PC 15 | Non-metal-surface treatment products |
| PC 17 | Hydraulic fluids |
| PC 18 | Ink and toners |
| PC 19 | Removed from PC list and relocated in the technical function list (Table R.12- 15)24. |
| PC 20 | Processing aids such as pH-regulators, flocculants, precipitants, neutralization agents |
| PC 23 | Leather treatment products |
| PC 24 | Lubricants, greases, release products |
| PC 25 | Metal working fluids |
| PC 26 | Paper and board treatment products |
| PC 28 | Perfumes, fragrances |
| PC 30 | Photo-chemicals |
| PC 31 | Polishes and wax blends |
| PC 32 | Polymer preparations and compounds |
| PC 34 | Textile dyes, and impregnating products |
| PC 35 | Washing and cleaning products |
| PC 37 | Water treatment chemicals |
| PC 38 | Welding and soldering products, flux products |
| PC 39 | Cosmetics, personal care products |
| PC 40 | Extraction agents |