Model Number: HMHT0033-15
Other Name: SFS; Rongalite C; Sodium Formaldehyde Sulfoxylate
Hazard symbol: R36/37/38
Molecular formula: CH6Na2O5S
Molecular formula: CH6Na2O5S
Molecular weight: 176.1
Flash point: 223.8 ℃
It is prepared by combining formalin with sodium bisulfite and then reducing it. The chemical name is sodium formaldehyde sulfoxylate, and the chemical formula is CH2(OH)SO2Na. It is white block or crystalline powder, odorless or slightly leek odor.
|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. a. Carved white blocks (powders, granules) are susceptible to moisture and heat, and begin to decompose at 80°C, releasing H2S, which needs to be stored in a dry and low temperature. 6NaHSO2·CH2O+3H2O—→4NaHSO3+2HCOONa+2H2S+HCOOH+3CH3OHb. When the temperature chemicalbook rises to 110℃, the carved white block (powder, grain) is completely decomposed, and the formaldehyde in the molecule splits to release the new generation [H], reducing power the strongest. NaHSO2·CH2O—→NaHSO2+CH2ONaHSO2+H2O—→NaHSO2+2[H]c. Carving white block (powder, grain) should be in alkaline medium PH>8, acidity (acid limit PH>3) can make carving white The block decomposes into hydrogen sulfide. d. Carved white blocks (powder, granules) will decompose when encountering oxidants, such as with I2. NaHSO2·CH2O+2H2O+2I2—→NaHSO4+4HI+CH2O
Stored in a dry, cool, and dark place.
Protected from moisture and avoided exposure to direct sunshine.
Don’t let it be rained on.
Be sure not to store it together with oxidant and acid, no presence of acidic vapor in storage.
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
production, trade, and research & development of various chemical products.
Since its establishment, the company has been concentrating on constructing an international marketing
network and optimizing supply chain management, where we have established a long-term strategic
cooperation relationship with numerous large enterprises at home and abroad.
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