China manufacturer sodium formaldehyde sulfoxylate
Product Description
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Chemical Name
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Sodium formaldehydesulfoxylate dihydrate; Rongalite; Sodium hydroxymethanesulfinate
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Commercial Name
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Rongalite |
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Molecular Weight
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154.12
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Specific Gravity
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1.8
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Melting Point
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64°C
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| Appearance | White powder or white lump |
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Grade Standard
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up to the Standard HG 228I-1992:Agriculture Grade, Electron Grade, Food Grade, Industrial Grade, Medicine Grade, Reagent Grade
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Heat of Fusion
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54.84 KJ/mol( 13.2Kcal/mol)
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Hygroscopic Point
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Relative Humidity 60%
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Stable Pour-Point
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50°C max
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| Solution |
clear or sight turbid
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M.F
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NaHSO2.CH2O.2H2O |
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Content of NaHSO2·CH2O % ≥
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98.0
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State of solubleness
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Water solution clear or microturbid
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Sulphide
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No presence of black color is allowed
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Smell
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No smell or a little smell of leek
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Solubility
45%(20 °C):1.2 dose of water is necessary for dissolving away 1 dose of Rongalite at 20°C. 50%(70 °C):1 dose of water is necessary for dissolving avay 1 dose of Rongalite at 70°C.
Application
It is mainly used as a discharging agent, color-discharging agent, reductant in printing and dyeing industry, as an activating agent for production styrene-butadise rubber and synthetic resin, also be used to decolourize and bleach some organic matters, for example: as a bleaching agent in synthetic rubber, sugar-making, and food industries. It may be substituted for the sodium hydrosulfite in some special conditions.
Storage
Should be stored in a dry, cool and dark place. Protected from moisture, avoided exposure to direct sunshine. Don’t to let it be rained on. Be sure not to store it together with oxidant and acid, no presence of acidic vapour in storage life is one year.