Model Number: HMHT0033-12
Other Name: SFS; Rongalite C; Sodium Formaldehyde SulfoxylateHazard symbol: R36/37/38
Temperature resistance: It decomposes at high temperature to produce toxic gases such as formaldehyde and hydrogen sulfide.
Molecular formula: CH6Na2O5S
Solubility: easily soluble in water, insoluble in absolute ethanol, ether and benzene.
Properties: Also known as sodium sulfoxylate formaldehyde (rongalite). The apparent density is 1.80～1.85g/cm3. The melting point of 64 ° C (dissolved in its crystal water). Decomposes above 120°C. Soluble in water, slightly soluble in alcohol. Anhydrous salts are more stable. But it will gradually decompose in moist air. It has strong reducibility at high temperature. The slurry is prepared from zinc powder and water, and sulfur dioxide is introduced into the slurry for reaction to generate zinc dithionite, which is then added with formaldehyde, and the zinc powder is reduced and then reacted with sodium hydroxide. It is used as a dye discharge agent and reducing agent for printing and dyeing, and can be used in synthetic rubber, sugar production, and indigo dye and vat dye production.
|Flash point||223.8 ℃|
|Application||Industrial bleach; reducing agent|
|Security description||S26; S36|
|Solubility||easily soluble in water, insoluble in absolute ethanol, ether and benzene.|
|Features||It has strong reducibility at high temperature. Has fading properties.|
|Temperature resistance||It decomposes at high temperature to produce toxic gases such as formaldehyde and hydrogen sulfide.|
|Acid resistance||it decomposes when it encounters dilute acid, and its solution is neutral.|
|Melting point||63～64 ℃.|
|Surface density||1.80～1.85 g/cm3|
We can provide 25kg bag; 50kg iron drum or as per customers' requirement
Mainly used in printing and dyeing industry as dye discharge agent, color release agent, reducing agent and as activator for styrene-butadiene rubber and synthetic resin, and also used for decolorization and bleaching of some organic substances (such as: synthetic rubber, sugar, food industry as bleaching agent) agent), can be used instead of hydrosulfite under certain conditions. Not for use in food bleaching.
Wuxi High Mountain Hi-tech Development Co., Ltd is a professional industrial company engaged in special
chemical production, technology research & development, and import & export. The company focuses on the
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