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Sodium metabisulfite
Product details:
- Product Name: Sodium metabisulfite
- Formulas : Na2S2O5
- Chemical composition : Italia-Foog grade-25kg
- Product Type: Chemical for Sugar refinery
Product description :
Sodium metabisulfite or sodium pyrosulfite (IUPAC spelling Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium (metabisulfite). It is used as a disinfectant, antioxidant and preservative agent.
- Added to local anaesthetic(lidocaine etc) solutions to prevent oxidation of vasoconstrictor adrenaline and thus improve the shelflife of the solution
- It is used in photography.[9]
- Concentrated sodium metabisulfite can be used to remove tree stumps. Some brands contain 98% sodium metabisulfite, and cause degradation of lignin in the stumps, facilitating removal.[10]
- It is also used as an excipient in some tablets, such as paracetamol. Approximately 0.5 mg is used in epinephrine autoinjectors such as the EpiPen.
- A very important health related aspect of this substance is that it can be added to a blood smear in a test for sickle cell anaemia (and other similar forms of haemoglobin mutation). The substances causes defunct cells to sickle (through a complex polymerisation) hence confirming disease.
- It is also used to precipitate gold from auric acid (gold dissolved in aqua regia).
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CAS number 7681-57-4
PubChem 24346 EC number 231-673-0 RTECS number UX8225000 Properties Molecular formula Na2S2O5, Na-O-(S=O)-O-(S=O)-O-Na Molar mass 190.107 g/mol Appearance white powder Density 1.48 g/cm3 Melting point
>170 °C (begins at 150 °C)Solubility in water 54 g/100 ml Hazards MSDS Mallinckrodt MSDS EU Index 016-063-00-2 EU classification Harmful (Xn)
Irritant (Xi) R-phrases R22 R31 R41 S-phrases (S2) S26 S39 S46 NFPA 704 Related compounds Other anions Sodium sulfite
Sodium bisulfite Other cations Potassium metabisulfite Related compounds Sodium dithionite
Sodium thiosulfate
Sodium sulfate(verify) (what is:
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references
Identifiers
Vichemfloc 62424-Anion flocculant |
Vichemfloc 84812 |
Activated carbon granular-Norit |
Vichemfloc 85610 |
Vichemfloc 63020 |
Sodium carbonate |
Sodium chloride |
Na2EDTA |
Sodium chloride |