HALS UV – 123
Basic Information:
Product name: HALS UV -123
Chemical name: (1-octyl-2,2,6,6-tetramethyl-4-piperidyl) decanediate;
The reaction product of two (2,2,6,6-tetramethyl-4-piperidyl) ester with tert-butyl hydrogen peroxide and octane;
English name: Bis- (1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate
CAS number: 129757-67-1
Molecular formula: C44H84N2O6
Molecular weight: 737
Structural formula：
Related categories: photostabilizer; ultraviolet absorber; organic chemical raw materials;
Melting point: 1.028 g/mL at 25°C (lit.)
Steam pressure: 0Pa at 20-25℃
Density 1.077 g/cm3 (rough estimate)
Refractive index: n20/D 1.479(lit.)
Solubility:Solsoluble in benzene, toluene, styrene, cyclohexane, methyl methacrylate, ethyl acetate, ketones and other organic solvents, insoluble in water.
Properties: Light yellow to yellow liquid.
Flash point:> 230 F
It have low alkaline, especially Apply to containing acid, catalyst residue in the special factors such as system;Effectively prevent the coating from losing light, cracking, foaming, peeling and discoloration, thus improving the service life of the coating; Used with UV absorbent for better weather resistance.
| Specification | Unit | Standard |
| Appearance | Light yellow to yellow liquid | |
| Main content | % | ≥99.00 |
| Volatiles | % | ≤2.00 |
| Ash content | % | ≤0.10 |
| Light transmittance | ||
| 450nm | % | ≥96.00 |
| 500nm | % | ≥98.00 |
UV-123 is a potent amine light stabilizer, with low alkaline, can minimize the reaction with the acid components in the coating system, especially suitable in the system containing special factors such as acid substance and catalyst residue; can effectively prevent light loss, cracking, foaming, falling off and discoloration, thus improve the service life of coating; use with ultraviolet absorbent to achieve better weather resistant application performance.
Suitable for: automotive coatings, industrial coatings, decorative coatings and wood coatings.
Add amount: generally 0.5-2.0%. Appropriate tests shall be used to determine the appropriate amount added in the particular use.
Packed in 25 Kg / plastic drum or 200 Kg / drum.
Store in a cool, dry and ventilated place.
