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31448
Fluka
Sodium metabisulfite
SKU
31448
Puriss. p.a., ACS Reagent, Reag. Ph. Eur., dry, 98-100.5%
Synonym(s)
Sodium disulfite; Sodium pyrosulfite
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General Information:
- Leading the industry for over 65 years
- Honeywell now delivers Fluka™ premium grade inorganic reagents worldwide – with consistency, purity and accuracy assured
| Brand Fluka | CAS Numbers (All) | EC Number | Linear Formula Na2S2O5 | MDL Number |
| Molar Mass 190.11 g/mol | RTECS Number UX8225000 | Synonyms Sodium disulfite; Sodium pyrosulfite |
Documents
Specifications
| Property | Value |
|---|---|
| assay | 98.0 - 100.5 % |
| pH (5 %, 20°C) | 3.5 - 5.0 |
| arsenic (As) | Max. 0.5 ppm |
| calcium (Ca) | Max. 0.005 % |
| cadmium (Cd) | Max. 0.005 % |
| cobalt (Co) | Max. 0.005 % |
| copper (Cu) | Max. 0.0005 % |
| iron (Fe) | Max. 5 ppm |
| potassium (K) | Max. 0.01 % |
| nickel (Ni) | Max. 0.005 % |
| lead (Pb) | Max. 0.0005 % |
| zinc (Zn) | Max. 0.001 % |
| heavy metals (as Pb) | Max. 10 ppm |
| chloride (Cl) | Max. 0.005 % |
| thiosulfate (S2O3) | complying |
| thiosulfate (S2O3) | Max. 0.01 % |
| water insoluble matter | Max. 0.005 % |
| appearance of the solution | complying |
Properties
| Property | Value |
|---|---|
| Autoignition Temperature | Not auto-flammable |
| Boiling Point/Range | Decomposes on heating |
| Certification | ACS Reagent, Ph. Eur. |
| Color | Colorless |
| Density | 2.36 g/cm3 (20 °C) |
| Flashpoint | Not applicable |
| Form | Solid |
| Grade | ACS Grade |
| Incompatible Materials | Contact with strong acids liberates sulphur dioxide, Oxidizing agents |
| Lower Explosion Limit | Not applicable |
| Melting Point/Range | >150 °C (Decomposes before melting) |
| Partition Coefficient | -3.7 |
| Purity Percentage | 98.00 |
| Purity Details | 98.00-100.50% |
| Solubility in Water | 667 g/l (20 °C) |
| Upper Explosion Limit | Not applicable |
| Vapor Pressure | Negligible |
| Viscosity | No data available |
| pH-Value | 3.5-5.0 at 50 g/l (20 °C) |
| Product Line | Puriss. p.a. |
| Storage Temperature | Ambient |
Safety Information
| Property | Value |
|---|---|
| Hazard Class | N/A |
| Package Group | N/A |
| UN ID | N/A |
