Sodium formaldehyde sulfoxylate
Synonyms
Methanesulfinic acid, hydroxy-, monosodium salt;
Sodium hydroxymethanesulphinate;
Sodium oxymethylene sulfoxylate;
Category
Anionic Surfactant
> Sulfinate
>> Alkyl Sulfinate
>>> hydroxyalkyl Sulfinate
>>>> Hydroxy Linear Alkyl Sulfinate
Chemical Numbering System
CAS: 149-44-0
EINECS: 205-739-4
Molecular Formula & Molecular Weight
Molecular Formula: CH3NaO3S; CH4O3S.Na
Molecular Weight: 118.09
Structure
Properties
Appearance (1), solid.
Solubility soluble in water.
Stability stable to alkali. Easily oxidized. At high temperature, easy to decompose. Unstable to acid, release formaldehyde.
Risk Solid form: irritation, irritation to skin, eye, respiratory system.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
rat oral LD50 |
> 2000mg/kg[1] |
|
rat intraperitoneal LD50 |
> 2000mg/kg[1] |
|
mouse oral LD50 |
4000mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent bleaching, reducing abilities.
Note It is strictly forbidden to use in food field.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
|
As, mg/kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents -- Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents -- Determination of total arsenic
3, Product standards
(1), Chinese standards
(1a), HG/T 2281 Rongalite
4, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
Major Uses
1, Typical Applications
Use as reducing agent.
Use as bleaching agent.
2, Personal care products
Reducing agent in personal care products.
3, Textile, paper
Reducing agent, bleaching agent in textile, paper.
Manufacturers
References
[1]: ChemIDplus. 149-44-0, Sodium sulfoxylate formaldehyde
Update: 20131027(1); 20171204(2);