Shellac
Synonyms
Lacca;
Gum lac;
Category
Natural Surfactant
> Animal Origin
>> Multicomponent Extract
Chemical Numbering System
CAS: 9000-59-3
EINECS: 232-549-9
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Properties
Appearance (1), solid.
Solubility insoluble in water.
Stability stable. Under strong acid or strong alkali condition, easily hydrolyzed.
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 film-forming, lubricating, dispersing, emulsifying, solubilizing abilities.
Note (1), Ingredient description: consist primarily of esters or polyesters of hydroxy fatty acids and terpenic acids.
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 1886.114 Food safety national standard -- Food additive -- Shellac
(1b), GB/T 7643 Sticklac
(1c), GB/T 8137 Seed lac
(1d), GB/T 8138 Shellac
(1e), GB/T 8139 Dewaxed shellac, decolorized shellac, decolorized and dewaxed shellac
(1f), GB/T 8140 Bleached shellac
(1g), GB/T 8141 Shellac for use in arms
(1h), GB/T 22347 Kusmi shellac
(1i), LY 1193 Shellac used as food additive
(1j), LY/T 1322 Sticklac
(1k), LY/T 1931 Kusmi sticklac
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 lubricant.
Use as dispersing agent, emulsion stabilizer.
Use as film-forming agent.
Use as adhesive.
Use as brightening agent.
2, Personal care products
Conditioning agent, emollient, viscosity controlling agent, hair fixing agent, binding agent, film-forming agent in personal care products.
2, Food
Use as food additive (coating agent, chewing gum base).
Manufacturers
Update: 20201108(1);