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Sodium Hydrosulfite
Hazard Class: 4.2
UN NO. : UN1384
Synonyms : Disodium salt; Sodium Sulfoxylate
CAS No.: 7775-14-6
Molecular Weight: 174.10
Chemical Formula: Na2S2O4 -
Sodium Metabisulphite
Product name : Sodium Metabisulphite
Other Names: Sodium Metabisufite;Sodium Pyrosulfite; SMBS; Disodium Metabisulfite; Disodium Pyrosulphite;Fertisilo;Metabisulfitede Sodium; Sodium Metabisulfite (Na2S2O5);Sodium Pyrosulfite(Na2S2O5); Sodium Dissulfite;Sodium Disulphite; Sodium Pyrosulphite.
Appearance: white or yellow crystal powder or small crystal ;Storage for a long time color gradient yellow.
PH: 4.0 to 4.6
Category: Antioxidants.
Molecular formula : Na2S2O5
The molecular weight : 190.10
CAS : 7681-57-4
EINECS : 231-673-0
Melting point: 150℃ (decomposition)
Relative density (water =1) : 1.48
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Sodium Sulfite
Appearance and appearance: white, monoclinic crystal or powder.
CAS:7757-83-7
Melting point (℃) : 150 (water loss decomposition)
Relative density (water =1) : 2.63
Molecular formula: Na2SO3
Molecular Weight: 126.04(252.04)
Solubility: Soluble in water (67.8g /100 mL (seven water, 18 °C), insoluble in ethanol, etc.