Sodium Formaldehyde Sulfoxylate (SFS)

Product Price:  1,450$/Ton

Min Qty: 20 Tons

Product Details:
CAS No.:
149-44-0
Packaging 50KG/DRUM
Form White Powder/Lump
Application Textile Auxiliary Agents
Usage Rubber, Printing & Dyeing
Classification Organic acid
EINECS No 205-739-4
Other Names Rongalite
MF CH3NaO3S
Purity 98%
Category:

Description

Textile Chemicals for sale

Sodium Formaldehyde Sulfoxylate (SFS) for sale

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 Name
Sodium formaldehydesulfoxylate dihydrate; Rongalite; Sodium hydroxymethanesulfinate
Commercial Name
  Rongalite
Molecular Weight
154.12
Specific Gravity
1.8
Melting Point
64°C
  Appearance   White powder or white lump
Grade Standard
up to the Standard HG 228I-1992:Agriculture Grade, Electron Grade, Food Grade, Industrial Grade, Medicine Grade, Reagent Grade
Heat of Fusion
54.84 KJ/mol( 13.2Kcal/mol)
Hygroscopic Point
Relative Humidity 60%
Stable Pour-Point
50°C max
  Solution
clear or sight turbid
M.F
  NaHSO2.CH2O.2H2O
Content of NaHSO2·CH2O % ≥
98.0
State of solubleness
Water solution clear or microturbid
Sulphide
No presence of black color is allowed
Smell
No smell or a little smell of leek

 

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

 

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. Textile Chemicals for sale for sale

Storage Textile Chemicals for sale for sale

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.

Packing & Delivery
package: 25kg/drum

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