Disproportionated Rosin
Synonyms
Rosin, disproportionated;
Category
Anionic Surfactant
> Carboxylate
>> Cyclic Carboxylate
>>> Alicyclic Carboxylate
>>>> Tricyclic Diterpene Carboxylate and its Derivatives
Chemical Numbering System
CAS: 8052-47-9
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Main ingredient:
Properties
Appearance (1), yellowish to yellow-red glassy solid, blue-violet fluorescence.
Solubility insoluble in water, soluble in benzene, ethanol.
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 film-forming, cleansing, emulsifying, dispersing, lubricating, solubilizing, foaming, wetting abilities.
Note (1), Mixture of dehydroabietic acid, dihydroabietate acid and tetrahydroabietic acid, dehydroabietic acid is the main component.
(2), The conjugated double bonds in abietic acid have a serious inhibitory effect on polymerization. Therefore, when applied to polymerization, the content of abietic acid should be strictly controlled, and the content should be below 0.5%.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
||
|
S |
1 |
||
|
Actives, %, ≥ |
95.0 |
||
|
Abietic acid, %, ≤ |
0.1 |
0.5 |
|
|
Dehydroabietic acid, %, ≥ |
52 |
45 |
|
|
Softening point (Ring and ball method), °C, ≥ |
75 |
75 |
|
|
Acid value, mgKOH/g, ≥ |
155 |
150 |
|
|
Unsaponifiable material, %, ≤ |
10 |
12 |
|
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
LY/T 1357 Disproportionated 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), LY/T 1357 Disproportionated rosin
4, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
Major Uses
1, Typical applications
Use as emulsifying agent, dispersing agent.
Use as cleansing agent.
Use as lubricant.
2, Organic synthesis
Emulsifying agent in synthetic rubber polymerization.
3, Coatings
Coloring vector in printing ink.
4, Polymer
Tackifier in adhesives.
Adhesives in water-soluble pressure-sensitive adhesives.
Manufacturers
Update: 20131114(1); 20181023(2);