Sodium Formaldehyde Sulfoxylate (SFS)

Sodium Formaldehyde Sulfoxylate Manufacturer

Chemical Properties

Presenting a powerful reduction behavior, it acts as a salt of alkaline protection.
a. Easy to deliquescent, emit heat, begin to decompose at 80°C, and sulfured hydrogen H2S being release:
6NaHSO2·CH2O+3H2O — →4NaHSO3+2HCOONa+2H2S+HCOOH+3CH3OH
b.Decompose completely when the temperature rises to 110°C, the intermolecular formaldehyde are splitted out, and then nascent hydrogen which is possessed of the strongest reducing power are produced :
NaHSO2·CH2O —→ NaHSO2+ CH2O
NaHSO2 + H2O —→ NaHSO2+ 2[H] c.Under the influence of acidity, decompose at PH >3, emit H2S, so that it should be present in alkaline medium PH >8.
d.Decompose on contacting oxidant, take I2 for example:
NaHSO2·CH2O+2H2O+2I2 —→ NaHSO4+4HI+CH2O

Sodium Formaldehyde Sulfoxylate Supplier

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 decolorize 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 vapor in storage life is one year.