THASORB UV-234

THASORB UV-234 is highly effective for polymers usually processed at high temperatures such as polycarbonate, polyesters, polyacetal, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane and polyurethane fibers.
THASORB UV-234 is a high molecular weight ultraviolet light absorber (UVA) of the hydroxy phenyl benzotriazole class. 
THASORB UV-234 is used for molded articles, films, sheets, and fibers. 

CAS Number: 3147-75-9
Molecular Formula: C20H25N3O
Molecular Weight: 323.43
EINECS Number: 221-573-5

Synonyms: OCTRIZOLE, 3147-75-9, 2-(2-Hydroxy-5-tert-octylphenyl)benzotriazole, 2-(2H-Benzo[d][1,2,3]triazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol, 2-(2H-Benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol, Sumisorb 340, Tinuvin 329, 2-Benzotriazolyl-4-tert-octylphenol, Cyasorb 5411, Cyasorb UV 5411, Seesorb 709, Viosorb 583, Spectra-Sorb UV 5411, 123307-21-1, 2-(benzotriazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol, 2-(2-Hydroxy-5-t-octylphenyl)benzotriazole, Phenol, 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)-, 52188-76-8, 2-(2-Hydroxy-5-tert-octylphenyl)-2H-benzotriazole, 2-(5-t-Octyl-2-hydroxyphenyl)benzotriazole, UV-329, 2-(2'-Hydroxy-5'-tert-octylphenyl)benztriazole, 2-(2'-Hydroxy-5'-tert-octylphenyl)benzotriazole, 2-(2-Hydroxy-5-t-octylphenyl)-2H-benzotriazole, 2-(5'-tert-Octyl-2'-hydroxyphenyl)benzotriazole, DTXSID9027522, 2-(2'-Hydroxy-5'-t-octylphenyl)benzotriazole, 2-(2'-Hydroxy-5'-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole, R775Y233N3, NCGC00164139-02, NCGC00164139-03, 2-benzotriazol-2-yl-4-(2,4,4-trimethylpentan-2-yl)phenol, DTXCID107522, Octrizolum, Octrizol, Octrizol [INN-Spanish], Octrizole [USAN:INN], Octrizolum [INN-Latin], 2-(2H-1,2,3-benzotriazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol, 2-(2H-benzotriazol-2-yl)-4-(1 pound not1 pound not3 pound not3-tetramethylbutyl)phenol, UV Absorber-5, CAS-3147-75-9, 2-[2-Hydroxy-5-tert-octylphenyl]-2H-benzotriazole, EINECS 221-573-5, 2-[2'-hydroxy-5'-(1,1,3,3-tetramethylbutyl)phenyl]benzotriazole, UNII-R775Y233N3, Eversorb 72, Kemisorb 79, MFCD00013338, Chisorb 5411, Chisorb-5411, Uvinul 3029, OCTRIZOLE [INN], Octrizole (USAN/INN), UV-329 (octrizole), OCTRIZOLE [USAN], EC 221-573-5, Oprea1_301042, SCHEMBL15508, MLS004773921, BIDD:ER0448, BIDD:GT0495, CHEMBL1886986, JF 83, Tox21_112086, Tox21_201456, Tox21_300498, UV 329, AKOS000521006, Tox21_112086_1, CS-W009876, UV 5411, NCGC00164139-01, NCGC00164139-04, NCGC00164139-05, NCGC00254486-01, NCGC00259007-01, AS-72774, SMR001595516, 1ST160793, DB-048049, DB-260804, H0716, NS00008577, 2-(2H-benzotriazol-2-yl)-4-tert-octylphenol, D05232, E78137, Octrizole Solution in Acetonitrile, 100mug/mL, 1ST160793-100, 2-(2'-hydroxy-5'-t-octyl phenyl) benzotriazol, A820874, W-106897, BRD-K74282937-001-01-6, Q27287879, 2-(2'-hydroxy-5'-tert.-octylphenyl)-2H-benzotriazole, 2-(2-benzotriazolyl)-4-(2,4,4-trimethylpentan-2-yl)phenol, 6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol, 2-((2H-benzotriazo)-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol, 2-(2H-Benzotriazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)-phenol, 2-(2H-Benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol, 98%, LABOTEST-BB LT00053579;EUSORB 323;2-(2'-HYDROXY-5'-TERT-OCTYLLPHENYL)BENZOTRIAZOLE;2-(2'-HYDROXY-5'-TERT-OCTYL PHENYL) BENZOTRIAZOLE;2-(2-HYDROXY-5-TERT-OCTYLPHENYL)BENZOTRIAZOLE;2-(2H-BENZOTRIAZOL-2-YL)-4-(1,1,3,3-TETRAMETHYLBUTYL)PHENOL;TINUVIN 329;OCTRIZOLE

THASORB UV-234 imparts very good light stability.
THASORB UV-234 provides low volatility and exceptional light-absorbing characteristics.
THASORB UV-234 is an ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, which is used as a light stabilizer for plastics and other organic substrates.

The ultraviolet absorber THASORB UV-234is a highly effective anti-aging additive with excellent performance. 
It is soluble in benzene, styrene Chemicalbook, dichloromethane and cyclohexane, slightly soluble in alcohols, insoluble in water; it can effectively absorb 270- 380 nanometer ultraviolet light; non-flammable, non-explosive, non-toxic, safe and harmless to use.

THASORB UV-234 is highly effective for polymers usually processed at high temperatures such as polycarbonate, polyesters, polyacetal, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane and polyurethane fibers.
THASORB UV-234 has the advantages of good compatibility, low volatility, strong UV absorption, and excellent thermal stability. Suitable for polycarbonate, polyester, polyoxymethylene, polydilute amine, polyphenylene ether, thermoplastic polyurethane and polyurethane fiber, etc.

THASORB UV-234 is a trade name for a UV stabilizer product primarily composed of 2-(2H-Benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, also commonly known as UV-234. 
THASORB UV-234 is part of the benzotriazole class of UV absorbers, designed to protect materials from the damaging effects of ultraviolet (UV) radiation by absorbing UV light and dissipating it as harmless heat.
THASORB UV-234 shares the same core structure as UV-234, featuring a benzotriazole moiety and phenolic groups that provide excellent UV absorption properties.

It is typically provided as a powder or granules for industrial applications.
Exhibits high thermal stability, making it suitable for use in high-temperature processing environments.
THASORB UV-234 is used in various industrial applications to enhance the durability and longevity of materials exposed to sunlight and UV radiation:

THASORB UV-234 protects plastics like polycarbonate, polyester, polyamide, and polyurethane from UV degradation.
THASORB UV-234 is used in automotive parts, packaging materials, and construction components.
Incorporated into paints, varnishes, and clear coatings to prevent fading, chalking, or discoloration caused by sunlight.

THASORB UV-234 prevents deterioration in adhesive and sealant materials exposed to sunlight.
THASORB UV-234 is used in outdoor fabrics and geotextiles to maintain strength and appearance over prolonged UV exposure.
Effectively absorbs a wide range of UV wavelengths, protecting against both UVA and UVB radiation.

THASORB UV-234 mixes well with various polymers and additives without significantly altering the mechanical or aesthetic properties of the material.
Offers resistance to weathering, yellowing, and brittleness in outdoor environments.

THASORB UV-234, like other UV stabilizers, should be handled with care to avoid dust generation, skin contact, or inhalation.
It is considered environmentally hazardous if released in significant quantities, particularly to aquatic ecosystems, and must be managed per local environmental regulations.

Melting point: 106-108 °C(lit.)
Boiling point: 471.8±55.0 °C(Predicted)
Density: 1.10±0.1 g/cm3(Predicted)
vapor pressure: 0Pa at 20℃
storage temp.: 2-8°C
solubility: Chloroform (Slightly), Methanol (Slightly)
form: Solid
pka: 8.07±0.45(Predicted)
color: White to Off-White
Water Solubility: 2μg/L at 20℃
InChI: InChI=1S/C20H25N3O/c1-19(2,3)13-20(4,5)14-10-11-18(24)17(12-14)23-21-15-8-6-7-9-16(15)22-23/h6-12,24H,13H2,1-5H3
InChIKey: IYAZLDLPUNDVAG-UHFFFAOYSA-N
SMILES: C1(O)=CC=C(C(C)(C)CC(C)(C)C)C=C1N1N=C2C=CC=CC2=N1
LogP: 7.290 (est)

THASORB UV-234 is a high-performance UV absorber and stabilizer from the benzotriazole family, specifically designed to protect various materials from the harmful effects of ultraviolet (UV) radiation. 
Its chemical backbone, 2-(2H-Benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, provides strong UV absorption and excellent compatibility with numerous materials. 
This product is particularly valued in industries requiring robust UV protection for outdoor and high-performance applications.

THASORB UV-234 protects polymers from UV radiation, helping to preserve the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor weathering.
The use levels of THASORB UV-234 range between 0.1 and 1.0 %, depending on substrate and performance requirements of the final application. 
The product can be used alone or in combination with other additives such as light stabilizers (hindered amines), antioxidants (hindered phenols, phosphites, thiosynergists, hydroxylamines), and other functional stabilizers and additives. 

The use of UV-329 in combination with hindered amine light stabilizers is particularly noteworthy in that a synergistic performance is often observed. 
Performance data of UV-329 alone or in combination with other additives are available in selected substrates.
THASORB UV-234 is a 2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-1,1,3,3-tetramethylbutyl)phenol). 

THASORB UV-234 acts as a low volatile UV absorber.
Commonly used in thermoplastics such as polycarbonate, polyamide, polyester, polyurethane, and acrylics.
THASORB UV-234 reduces brittleness, discoloration, and loss of mechanical properties due to prolonged UV exposure.

Essential for automotive parts (dashboards, bumpers, etc.), construction materials (roofing sheets, outdoor piping), and electronics housings.
Added to transparent and pigmented coatings to prevent yellowing, fading, and loss of gloss.
Common in architectural coatings, automotive paints, and industrial finishes.

THASORB UV-234 enhances durability by preventing cracking or weakening caused by UV-induced degradation.
THASORB UV-234 is used in protective films, packaging materials, and textiles to maintain flexibility, strength, and appearance in outdoor settings.
Protective layers for solar panels.

THASORB UV-234 enhances the lifespan of materials in aerospace and marine environments.
Effectively blocks UV-A, UV-B, and UV-C radiation, protecting materials from a wide range of UV damage.
Resists photochemical degradation, ensuring long-lasting protection.

THASORB UV-234 performs well in environments requiring high processing temperatures or exposure to thermal cycling.
Can be used in combination with other stabilizers, such as hindered amine light stabilizers (HALS), for enhanced performance.
Reduces material degradation, thereby extending product life and reducing maintenance costs.

THASORB UV-234 prevents yellowing and fading, preserving the appearance of materials.
Maintains the structural integrity of plastics and other materials exposed to UV and weathering conditions.
By extending the service life of products, it helps minimize waste and replacement frequency.

THASORB UV-234 protective layers in car interiors and exteriors, headlamp lenses, and trim parts.
Roofing membranes, siding materials, and window profiles.
THASORB UV-234 casings and housings for consumer electronics.

THASORB UV-234 protection for photovoltaic panels and wind turbine components.
THASORB UV-234 potentially hazardous to aquatic ecosystems if improperly disposed of. 
It is recommended to use eco-friendly formulations and follow disposal guidelines.

THASORB UV-234 avoid direct inhalation or prolonged skin contact. 
Use protective equipment during handling and processing.
THASORB UV-234 often meets regulatory requirements for safety and performance in the EU, US, and other regions.

Uses:
THASORB UV-234 is used in the following products: coating products.
Other release to the environment of this substance is likely to occur from: indoor use and outdoor use resulting in inclusion into or onto a materials (e.g. binding agent in paints and coatings or adhesives).
Release to the environment of THASORB UV-234 can occur from industrial use: industrial abrasion processing with low release rate (e.g. cutting of textile, cutting, machining or grinding of metal).

Other release to the environment of THASORB UV-234 is likely to occur from: indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment), outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials) and outdoor use in long-life materials with high release rate (e.g. tyres, treated wooden products, treated textile and fabric, brake pads in trucks or cars, sanding of buildings (bridges, facades) or vehicles (ships)).
THASORB UV-234 can be found in products with material based on: plastic (e.g. food packaging and storage, toys, mobile phones) and rubber (e.g. tyres, shoes, toys).

THASORB UV-234 is used in the following products: coating products and polymers. 
THASORB UV-234 is used for the manufacture of: chemicals and . Other release to the environment of this substance is likely to occur from: indoor use and outdoor use resulting in inclusion into or onto a materials (e.g. binding agent in paints and coatings or adhesives).
THASORB UV-234 is used in the following products: polymers and coating products.

Release to the environment of THASORB UV-234 can occur from industrial use: formulation in materials and formulation of mixtures.
THASORB UV-234 is used in the following products: polymers and coating products.
THASORB UV-234 is used in the following areas: formulation of mixtures and/or re-packaging.

THASORB UV-234 is used for the manufacture of: plastic products and .
Release to the environment of THASORB UV-234 can occur from industrial use: in the production of articles and industrial abrasion processing with low release rate (e.g. cutting of textile, cutting, machining or grinding of metal).
THASORB UV-234 is widely utilized in the plastics and polymer industry to enhance the durability of plastic materials exposed to sunlight for extended periods. 

By integrating this UV absorber into polymers such as polycarbonate, polyamide, polyester, acrylics, and polyurethane, manufacturers can ensure that these materials retain their structural integrity, flexibility, and aesthetic properties despite prolonged UV exposure. 
For example, it is a crucial additive in the production of automotive components, such as dashboards, trims, and headlamp lenses, where the material is exposed to both heat and sunlight. 
Additionally, it is frequently used in the construction industry for roofing sheets, siding, outdoor piping, and window profiles to prevent cracking, yellowing, and loss of strength, thereby extending the lifespan of these products. 

Similarly, packaging films made with THASORB UV-234, especially those used for food and electronic goods, maintain their transparency and protective qualities over time.
In the coatings and paints industry, THASORB UV-234 is incorporated into formulations to prevent the degradation of surface coatings exposed to direct sunlight. 
For instance, automotive paints benefit greatly from this UV stabilizer, as it helps maintain the original gloss, vibrancy, and smooth finish of the vehicle’s surface for years, even under harsh sunlight. 

Industrial finishes applied to machinery and equipment exposed to outdoor conditions also utilize THASORB UV-234 to resist fading and chalking, ensuring the machinery remains visually appealing and corrosion-resistant. 
Furthermore, architectural coatings for buildings and outdoor furniture rely on this additive to combat discoloration and preserve aesthetic appeal.
Outdoor fabrics and textiles, such as those used in awnings, canopies, tents, and tarpaulins, are exposed to continuous sunlight, making them prone to fading and loss of strength. 

THASORB UV-234, when incorporated into these materials, significantly enhances their UV resistance, enabling them to maintain their color, flexibility, and durability over time. 
Geotextiles used in landscaping and construction also benefit from its protective properties, ensuring these materials can withstand prolonged UV exposure without compromising performance.
Adhesives and sealants used in outdoor applications, such as in construction joints, facades, and window installations, are prone to cracking and loss of adhesion due to UV-induced degradation. 

THASORB UV-234 in their formulations, manufacturers can ensure that these products maintain their bonding strength and elasticity, even in environments with intense sunlight exposure, ultimately increasing the reliability and lifespan of the structures in which they are used.
The electronic industry leverages the protective benefits of THASORB UV-234 to safeguard the housings and components of devices that are frequently exposed to sunlight. 
For instance, consumer electronics such as laptops, smartphones, and outdoor electronic displays can experience discoloration, brittleness, and surface damage when exposed to UV rays. 

THASORB UV-234 helps preserve the aesthetic and functional properties of these products, ensuring they remain durable and visually appealing even after prolonged outdoor use.
In the renewable energy sector, materials used in solar panels and wind turbines face intense sunlight and UV radiation for extended periods, which can cause significant degradation and loss of efficiency. 
THASORB UV-234 is employed in coatings and protective layers for these components to ensure they retain their optical clarity, structural stability, and performance over time.

For example, solar panel encapsulants treated with this UV absorber are better protected against yellowing and surface cracking, leading to improved energy conversion efficiency and extended operational life.
THASORB UV-234 is also widely used in consumer products that are regularly exposed to sunlight, such as sports equipment, sunglasses, and outdoor furniture. 
For instance, helmets, goggles, and other sports gear are designed to endure harsh environments, and this UV stabilizer ensures they remain functional and aesthetically intact.

Similarly, sunglasses benefit from the additive by maintaining the clarity and quality of their lenses, preventing UV-induced yellowing or brittleness. 
In household items like storage bins, outdoor chairs, and decorative items, THASORB UV-234 ensures these products retain their structural strength and appearance despite constant exposure to sunlight.

By incorporating THASORB UV-234 into materials and products, manufacturers can significantly enhance their performance and longevity in UV-exposed environments. 
THASORB UV-234 not only reduces maintenance and replacement costs but also ensures that the materials retain their mechanical properties, aesthetic appeal, and overall functionality for extended periods.

Safety Profile:
Breathing in dust, vapors, or aerosols of THASORB UV-234 can cause respiratory irritation. 
Prolonged or repeated exposure may lead to more serious respiratory issues or lung damage. 
It is advised to avoid inhaling any airborne particles or vapors.

Prolonged or repeated skin exposure to THASORB UV-234 could lead to mild irritation or allergic reactions. 
Although not highly corrosive, direct contact with the skin should be avoided, and protective gloves should be worn when handling it.
Direct contact with the eyes can cause irritation, redness, or discomfort. 

In severe cases, it may lead to more significant eye injury, so eye protection is recommended when working with the substance.
Ingestion of THASORB UV-234 can lead to digestive discomfort or more severe health effects if consumed in large quantities. 
Symptoms may include nausea, vomiting, or stomach irritation. 

If ingested, medical attention should be sought immediately.
Like many chemicals, THASORB UV-234 may be harmful to aquatic life if it enters water sources. 
Its persistence in the environment can lead to long-term ecological effects, affecting aquatic organisms such as fish, invertebrates, and plants. 

Care should be taken to avoid accidental discharge into water systems.
There is a potential for THASORB UV-234 to bioaccumulate in aquatic organisms over time, leading to ecological imbalances. 
Thus, preventing environmental contamination is crucial.