Zinc citrate
Synonyms
1,2,3-Propanetricarboxylic acid, 2-hydroxy-, zinc salt (2:3);
Citric acid, zinc salt (2:3);
Trizinc dicitrate;
Category
Anionic Surfactant
> Carboxylate
>> Tricarboxylate
>>> Citrate
Chemical Numbering System
CAS: 546-46-3
EINECS: 208-901-2
Molecular Formula & Molecular Weight
Molecular Formula: C12H10O14Zn3; C6H8O7.3/2Zn
Molecular Weight: 574.43
Structure
Properties
Appearance (1), solid.
Solubility slightly 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: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent dispersing, emulsifying 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), Chinese Pharmacopoeia (2015 Edition) Zinc Citrate
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 dispersing agent, emulsifying agent.
2, Personal care products
Oral care agent, antiplaque agent in personal care products.
* * * * * *
Further information:
(1), In accordance with EU regulations (EC) No 1223/2009, directive 82/368/EEC, be included in Annex III/24.
Maximum concentration is 1.0% (as Zn).
(2), In accordance with Safety and Technical Standards for Cosmetics (2015 Edition) of China, be included in the restricted components.
Maximum concentration is 1.0% (as Zn).
3, Medicine
Use as pharmaceutical ingredient (zinc supplement). (This section is for reference only, should be implemented according to local Pharmacopoeia.)
Manufacturers
Update: 20140309(1); 20181015(2);