Disodium ascorbyl sulfate
Synonyms
Disodium L-ascorbate 2-sulfate;
L-Ascorbic acid 2-sulfate disodium salt;
L-Ascorbic acid, 2-(hydrogen sulfate), disodium salt;
L-Ascorbic acid, 2-(hydrogen sulfate), sodium salt (1:2);
Category
Anionic Surfactant
> Sulfate
>> Ester-based Sulfate
>>> Lactone Sulfate
>>>> Alkenyl-based Unsaturated Lactone Sulfate
Chemical Numbering System
CAS: 53910-28-4
EINECS: 611-063-4
Molecular Formula & Molecular Weight
Molecular Formula: C6H6Na2O9S; C6H8O9S.2Na
Molecular Weight: 300.15
Structure
Properties
Appearance (1), white to pale yellow powder.
Solubility readily soluble in water.
Stability stable in weak alkali, weak acid. easily oxidized.
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: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent anti-oxidizing, dispersing abilities.
Synthesis
Obtained by esterification of ascorbic acid and sulfur trioxide, and neutralization by sodium hydroxide.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 5173 Surface active agents and detergents -- Determination of anionic-active matter by direct two-phase titration procedure
ISO 2271 Surface active agents -- Detergents -- Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure
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 average molecular weight.
Major Uses
1, Typical applications
Use as antioxidant.
2, Personal care products
Use as antioxidant.
Good anti-aging, whitening effects.
Manufacturers
Update: 20131018(1); 20160927(2);