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 RN: 53910-28-4
EINECS: 611-063-4
Molecular Formula & Molecular Weight
Molecular Formula: C6H6Na2O9S; C6H8O9S.Na2 (SciFinder Hill Rules)
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 (Rev.6) 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
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Item
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Physical and chemical indexes
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Solid
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|
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Actives, %, ≥
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95.0
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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
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Item
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Hazardous substances indexes
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Solid
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|
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Heavy metals (as Pb), mg/Kg, ≤
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20
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As, mg/Kg, ≤
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3
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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);