Disodium malate
Synonyms
Sodium DL-maleate;
Butanedioic acid, hydroxy-, disodium salt;
Category
Anionic Surfactant
> Carboxylate
>> Dicarboxylate
>>> Hydroxy Alkyl Dicarboxylate
>>>> Hydroxy Linear Alkyldicarboxylate
Chemical Numbering System
CAS: 676-46-0
EINECS: 211-627-6
Molecular Formula & Molecular Weight
Molecular Formula: C4H4Na2O5; C4H6O5.2Na
Molecular Weight: 178.05
Structure
Properties
Appearance (1), solid.
Solubility soluble in water.
Stability stable.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. 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
|
rabbit subcutaneous LDLo |
3300mg/kg[1] |
|
rat subcutaneous LD50 |
3500mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent chelating, dispersing abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
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), GB 30608 Food safety national standard -- Food additive -- Sodium DL-maleate
4, 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, according to local regulations and standards.
Major Uses
1, Typical applications
Use as chelating agent.
Use as dispersing agent.
2, Food
Use as food additive (acidity regulator).
Manufacturers
References
[1]: ChemIDplus. 676-46-0, Disodium malate
Update: 20181015(1);