Casein
Synonyms
Caseins;
Milk protein, casein;
Category
Polymer Surfactant
> Protein and its Derivatives
>> Protein and its Salts
Chemical Numbering System
CASRN: 9000-71-9
EINECS: 232-555-1
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Properties
Appearance (1), white to pale yellow solid.
Solubility slightly soluble in water. Soluble in alkali solution, such as sodium hydroxide solution. Soluble in strong acid solution.
Hygroscopicity hygroscopic.
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 (Rev.10) label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent film-forming, dispersing, antistatic, emulsifying, adsorbing abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
80.0 |
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 31638 Food safety national standard -- Casein
(1b), QB/T 3780 Casein for industrial uses
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 film-forming agent.
Use as dispersing agent, emulsifying agent.
Use as adhesive.
Use as thickening agent.
Use as non-metallic material. For example, used in preparation of edible film.
Use as food raw material.
2, Personal care products
Antistatic agent, conditioning agent in personal care products.
3, Paper-making
Sizing agent, adhesive in paper-making.
4, Textile, leather
Finishing agent, adhesive in textile, leather.
5, Coatings
Use as paint additive, base material.
Manufacturers
Update: 20140818(1); 20201030(2);