Sodium hydroxymethane sulfonate
Synonyms
Methanesulfonic acid, hydroxy-, monosodium salt;
Sodium hydroxymethanesulphonate;
Formaldehyde sodium bisulfite;
Category
Anionic Surfactant
> Sulfonate
>> Chain Sulfonate
>>> Hydroxyl Alkyl Sulfonate
>>>> Hydroxyl Linear Alkyl Sulfonate
Chemical Numbering System
CAS: 870-72-4
EINECS: 212-800-9
Molecular Formula & Molecular Weight
Molecular Formula: CH3NaO4S; CH4O4S.Na
Molecular Weight: 134.09
Structure
Properties
Appearance (1), white solid.
Solubility soluble in water.
Stability stable.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
rat oral LD50 |
3200mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent antimicrobial, antibacterial, preservative abilities. Formaldehyde slow-release agent.
Note (1), Avoid using in children products, such as shower gels, shampoo, skin care products, and so on.
Synthesis
Formaldehyde reacts with sodium bisulfite, then obtain.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
90.0 |
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, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances; or furtherly test for microorganisms.
Major Uses
1, Typical Applications
Use as antimicrobial agent, preservative.
2, Personal care products
Antimicrobial agent, reducing agent in personal care products.
* * * * * *
Further informations:
(1), EU CosIng: No use restriction.
(2), China “Safety and Technical Standards for Cosmetics (2015)”: Not included, but include formaldehyde and bisulfite salts.
3, Textile, printing and dyeing
Use as discharging agent.
4, Pets
Antimicrobial agent, preservative in shampoos and other pet products.
Manufacturers
References
[1]: ChemIDplus. 870-72-4, Sodium formaldehyde bisulfite
Update: 20131027(1); 20170730(2);