Rosin
Synonyms
Gum rosin;
Colophonium;
Category
Anionic Surfactant
> Carboxylate
>> Cyclic Carboxylate
>>> Alicyclic Carboxylate
>>>> Tricyclic Diterpene Carboxylate and its Derivatives
Chemical Numbering System
CAS: 8050-09-7
EINECS: 232-475-7
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Main ingredient:
Properties
Appearance (1), pale yellow to yellow-red glassy solid.
Solubility insoluble in water, soluble in sodium hydroxide, soluble in petroleum ether, benzene, ethanol.
Stability stable. Easily oxidized.
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, cleansing, emulsifying, dispersing, lubricating, solubilizing, foaming, wetting, preservative abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
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|
S |
1 |
2 |
3 |
4 |
5 |
|
|
Actives, %, ≥ |
95.0 |
|||||
|
Softening point (Ring and ball method), °C, ≥ |
76 |
75 |
74 |
|||
|
Acid value, mg/g, ≥ |
166 |
165 |
164 |
|||
|
Unsaponifiable material, %, ≤ |
5 |
5 |
6 |
|||
|
Ethanol insoluble material, %, ≤ |
0.03 |
0.0.3 |
0.04 |
|||
|
Ash, %, ≤ |
0.02 |
0.03 |
0.04 |
|||
|
Color |
From "S" to "5", they are: slightly yellow, pale yellow, yellow, deep yellow, yellow-brown and yellow-red. |
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Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
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), Indexes other than "Actives"
GB/T 8146 Test methods for rosin
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/T 8145 Gum rosin
(1b), GB/T 29591 Gum rosin from Pinus. elliottii Engelm
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 emulsifying agent, dispersing agent.
Use as cleansing agent.
Use as lubricant.
2, Organic synthesis
Used in preparation of rosin acid salts.
Used in preparation of rosin acid esters. Rosin acid esters can be used in paint, plastics, resin, food.
3, Coatings
Carrier, drier, film-forming agent in paint, printing ink.
4, Polymer
Softening agent in rubber.
5, Electronic industry
Flux in electronic industry.
6, Personal care products
Film-forming agent, viscosity controlling agent, binding agent, depilatory in personal care products.
7, Paper
Sizing agent in paper making.
8, Musical instruments
Use as abrasive agent.
Manufacturers
Update: 20131114(1); 20181023(2);