6035 47 8 Rongalite C Sodium Formaldehyde Sulfoxylate white lump

Model Number: HM03001
Other Names: SFS; Rongalite C; Sodium Formaldehyde Sulfoxylate
Molecular Formula: NaHSO2.CH2O.2H2O
Molecular Weight: 154.12
CAS NO.: 6035-47-8/ 149-44-0
EINECS NO.: 205-739-4
H.S. CODE NO.: 28311020
Standard: HG/T2281-2006
Purity: 98% min.;99% min.

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.

Chemical Properties
Presenting a powerful reduction behaviour, it acts as a salt of alkaline protection.
a. Easy to deliquescent, emit heat, begin to decompose at 80°C, and sulfurated hydrogen H2S being release:
6NaHSO2·CH2O+3H2O — →4NaHSO3+2HCOONa+2H2S+HCOOH+3CH3OH
b.Decompose completely when the temperature rises to 110°C, the intramolecular 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 sould be present in alkline medium PH >8.
d.Decompose on contacting oxidant, take I2 for example:
NaHSO2·CH2O+2H2O+2I2 —→ NaHSO4+4HI+CH2O

Detailed Images: 

1) Mainly used as a discharging agent, color-discharging agent, reductant in printing a dyeing industry.

2) Also used as an activating agent for production styrene-butadise rubber and synthetic resin.

3) Also used to decolourize and bleach some organic matters, for example: as a bleaching agent in synthetic rubber, sugar-making, and food industry.

4) Substituted for Sodium Hydrosulfite in some special cases.