UV 234

UV 234 is a trade name for a chemical compound primarily used as a UV absorber. 
UV 234 is part of the benzotriazole family of ultraviolet light stabilizers and is commonly employed in plastics, coatings, adhesives, and other materials to protect them from degradation caused by UV radiation. 
UV 234 is particularly effective in enhancing the weatherability and durability of materials exposed to sunlight for prolonged periods.

CAS Number: 70321-86-7
Molecular Formula: C30H29N3O
Molecular Weight: 447.57
EINECS Number: 274-570-6

Synonyms: 70321-86-7, 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)-, UV-234, 2-(2H-Benzo[d][1,2,3]triazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, Tinuvin 234, BENZOTRIAZOLE BT, EINECS 274-570-6, UNII-9B1ZX3NU45, 2-(benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, 9B1ZX3NU45, DTXSID2028985, DTXCID008985, UV 234 (ANTIOXIDANT), EC 274-570-6, 2-(2h-benzotriazol-2-yl)-4,6-bis(1-methyl-l-phenylethyl)phenol, 2-(2-HYDROXY-3,5-DI-.ALPHA.-CUMYLPHENYL)-2H-BENZOTRIAZOLE, Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl), 2-(2-HYDROXY-3,5-DI(1,1-DIMETHYLBENZYL)PHENYL)-2H-BENZOTRIAZOLE, 2-(2'-HYDROXY-3',5'-BIS(.ALPHA.,.ALPHA.-DIMETHYLBENZYL)PHENYL)BENZOTRIAZOLE, 2-(2H-BENZOTRIAZOL-2-YL)-4,6-BIS(.ALPHA.,.ALPHA.-DIMETHYLBENZYL)PHENOL, 2-(3',5'-BIS(.ALPHA.,.ALPHA.-DIMETHYLBENZYL)-2'-HYDROXYPHENYL)BENZOTRIAZOLE, UV Absorber 234, 2-(1,2,3-BENZOTRIAZOL-2-YL)-4,6-BIS(2-PHENYLPROPAN-2-YL)PHENOL, 2-(3',5'-bis(alpha,alpha-dimethylbenzyl)-2'-hydroxyphenyl)benzotriazole, 2-[3',5'-bis(alpha,alpha-dimethylbenzyl)-2'-hydroxyphenyl]benzotriazole, MFCD00134705, SCHEMBL29903, Ultraviolet AbsorbentUV-234, CHEMBL1892237, Tox21_202571, AKOS015895747, 1ST3462, NCGC00164197-01, NCGC00260120-01, AS-13201, CAS-70321-86-7, B3717, CS-0135912, NS00004642, 1ST3462-100, D97736, UV-234 Solution in Acetonitrile, 100mug/mL, A836845, W-104560, Q27272294, 2-(2-benzotriazolyl)-4,6-bis(2-phenylpropan-2-yl)phenol, 2-(2-hydroxy-3,5-di-alpha-cumylphenyl)-2h-benzotriazole, 2-[2-Hydroxy-3,5-di(1,1-dimethylbenzyl)phenyl]2H-benzotriazole, 2-(2H-Benzotriazol-2-yl)-4 pound not6-bis(1-methyl-1-phenylethyl)phenol, 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, powder, 2-(2H-BENZOTRIAZOL-2-YL)-4,6-BIS(ALPHA,ALPHA-DIMETHYLBENZYL)PHENOL, 2-[2-hydroxy-3,5-di-(alpha,alpha-dimethylbenzyl)phenyl]-2H-benzotriazole, 2-(2h-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)-pheno,BLS234,2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol UV-234,2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol powder,Eusorb UV-900,2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol,UV Absorber UV-234,Absorber UV-234

UV 234 is chemically phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl) grade. 
It is a high molecular weight product belonging to hydroxyphenyl benzotriazole class.
Imparts excellent light stability to a variety of polymers.

Features low volatility, exceptional light absorbing characteristics and good compatibility in various substrates.
UV 234 makes the product particularly suitable for applications characterized by high surface area, such as films and fibers.
Suitable for polycarbonates, polyalkylene terephthalates, polyacetals, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane and polyurethane fibers, as well as for polyvinylchloride, styrene homo- and copolymers.

Applications include molded articles, films, sheets and fibers.
Use levels of UV 234 ranges between 0.15 and 0.60%, depending on substrate and performance requirements of the final application.
UV 234 is a high molecular weight ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting excellent light stability to a variety of polymers.

Protects polymers like polycarbonate, polyesters, and polyamides from UV-induced degradation.
UV 234 ensures durability and prevents yellowing or cracking of surface coatings.
Enhances stability under UV exposure.

UV 234 is used in lenses, films, and sheets to maintain optical clarity.
UV 234 is a high-performance ultraviolet (UV) absorber widely used in plastics, coatings, and adhesives to enhance their resistance to UV degradation.
UV 234 provides excellent thermal stability and UV absorption, making it particularly eective for applications requiring long-term exposure to sunlight and high temperatures.

This UV 234 stabilizer is valued for its high eciency in protecting materials from discoloration, cracking, and loss of physical properties due to UV radiation.
UV 234 covers a wide spectrum of UV light, providing superior protection.
Performs better at high temperatures compared to other stabilizers like benzophenones.

UV 234s bulky molecular structure reduces migration, especially in thin films or coatings.
UV 234 is extensively used in the plastics industry to protect polycarbonate, polyester, and polyamide products from UV degradation.
UV 234 is applied in polypropylene and polyethylene formulations to improve outdoor durability and prevent yellowing.

UV 234 is found in polyvinyl chloride (PVC) applications, enhancing UV resistance and prolonging material life.
UV 234 is incorporated into automotive coatings, where it protects paint and plastic components from fading and cracking due to UV exposure.
UV 234 is used in industrial coatings for outdoor equipment and structures, ensuring long-lasting color and nish.

UV 234 is included in architectural coatings, where it provides enhanced UV resistance for exterior surfaces.
UV 234 is a highly ecient UV absorber derived from benzotriazole, specically designed for applications requiring superior UV stability and durability.
Phenolic Benzotriazole (Tinuvin 234) provides excellent thermal stability, making it suitable for high-temperature processing and outdoor applications.

The versatility of UV 234 allows its use across diverse industries, including automotive, construction, electronics, and packaging.
UV 234 is non-migratory and compatible with a wide range of polymers, ensuring long-lasting UV protection without aecting material properties.
As a benzotriazole-based stabilizer, UV 234 exhibits high resistance to light and oxidation, preserving the appearance and mechanical integrity of treated materials.

UV 234 is an environmentally friendly UV stabilizer, with low volatility and minimal leaching, making it suitable for eco-conscious formulations.
UV 234 is a high molecular weight ultraviolet light absorber (UVA) of the hydroxy phenyl benzotriazole class. 
It is used for molded articles, films, sheets, and fibers. Imparts very good light stability.

UV 234 provides low volatility and exceptional light-absorbing characteristics.
UV absorbers like UV 234 play a crucial role in protecting materials from UV-induced deterioration. 
UV 234 radiation can lead to color fading: Dyes and pigments in materials fade over time.

UV 234 coatings and plastics develop fine cracks, reducing their utility and aesthetic appeal.
The molecule contains a benzotriazole core, which is key to its UV-absorbing properties.
The attached phenolic and bulky substituents increase its compatibility with various polymers and improve its performance by making the molecule more resistant to volatilization and leaching.

UV 234 is highly stable under thermal and light exposure. 
Its resistance to degradation ensures long-term protection for the materials it is incorporated into.
Effective at processing temperatures above 300°C, making it suitable for high-performance polymers.

UV 234 blends easily with most thermoplastics, thermosets, and coatings. 
The hydrophobic nature of its structure enhances its retention in nonpolar matrices.
UV 234 is often used in combination with other stabilizers for improved performance:

These stabilize against long-term UV exposure by scavenging free radicals formed during degradation.
UV 234 protect against thermal oxidation and enhance overall material durability.
UV 234 is used in pigmented materials to reduce surface discoloration caused by sunlight.

UV 234 is not easily biodegradable, which may lead to environmental persistence if not managed properly.
It is stable and low in toxicity but should be handled carefully to minimize environmental release.
Does not interfere with the recycling of most thermoplastics.

Melting point: 139-143 °C(lit.)
Boiling point: 589.3±60.0 °C(Predicted)
Density: 1.12±0.1 g/cm3(Predicted)
Flash point: 383 °F(lit.)
storage temp.: Refrigerator
solubility: H2O: <0.04 ppm at 20 °C, insoluble
form: powder
pka: 9?+-.0.10(Predicted)
color: White to Off-White
Odor: fresh fruity raspberry rose
Water Solubility: insoluble, <0.04 ppm at 20 ºC
InChIKey: OLFNXLXEGXRUOI-UHFFFAOYSA-N

UV 234 prevents yellowing of polycarbonate lenses, ensuring clear visibility.
Protects dashboards, trims, and panels from discoloration and cracking.
UV 234 is used in UV-resistant paints and varnishes.

Protects clear films and containers from UV degradation while maintaining transparency.
Extends the shelf life of materials stored outdoors by preventing UV damage.
UV 234 protects UV-exposed electronic casings and components from environmental stress.

UV 234 is used in window films, roofing sheets, and façade coatings to maintain aesthetic and functional properties under sun exposure.
Commonly added to synthetic fibers like polyester and nylon to reduce fading and improve durability for outdoor uses.
UV 234 enhances the longevity of protective coatings and polymer components in solar panels, which are constantly exposed to sunlight.

UV 234 absorbs strongly between 300 and 400 nm, which includes UVA (315–400 nm) and UVB (280–315 nm).
Provides maximum absorption at specific wavelengths for polymers like polycarbonate and polyester.
UV 234 can withstand high extrusion or molding temperatures, making it ideal for engineering plastics.

Resistant to leaching, making it suitable for applications requiring water exposure (e.g., marine coatings).
UV 234 absorbs UV light in the range of 300–400 nm, preventing it from penetrating materials. 
This absorption mechanism reduces the photo-degradation processes.

Breakage of chemical bonds in polymer chains caused by UV energy.
UV 234 oxidative reactions that lead to discoloration, embrittlement, or loss of mechanical properties.
UV 234 is highly effective for polymers processed at high temperatures such as polycarbonates, polyalkylene terephthalates, polyacetals, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane and polyurethane fibers, as well as for polyvinylchloride, styrene homo- and copolymers. 

UV 234 applications include molded articles, films, sheets and fibers.
UV Absorber 234 features low volatility, exceptional light absorbing characteristics and good compatibility in various substrates. 
This makes the product particularly suitable for applications characterized by high surface area, such as films and fibers.

UV 234 is utilized in adhesive formulations to prevent degradation and maintain bond strength under UV exposure.
UV 234 is found in sealants used for outdoor applications, where it enhances resistance to UV-induced brittleness and discoloration.
UV 234 is applied in exible packaging lms, providing protection against UV-induced degradation of both the packaging and contents.

UV 234 is used in photovoltaic panels, where it enhances the UV resistance of encapsulation materials.
UV 234 is incorporated into optical bers and cables, protecting them from UV damage and extending their functional life.
UV 234 is employed in agricultural lms and nets, where it prevents UV-induced breakdown and ensures durability.

UV 234 is a key additive in marine coatings and applications, providing UV protection for boats, docks, and other structures exposed to harsh sunlight.
UV 234 is applied in sports and recreational equipment, enhancing the durability of items exposed to prolonged outdoor use.
UV 234 is found in consumer electronics housings, where it protects plastics and coatings from UV discoloration.

UV 234 is used in clear plastics and lms, ensuring transparency and preventing yellowing over time.
UV 234 is incorporated into automotive headlight lenses, preserving optical clarity and preventing UVinduced damage.
UV 234 is included in synthetic ber treatments to enhance UV resistance for textiles used in outdoor settings.

UV 234 is a high-performance UV absorber belonging to the benzotriazole class. 
It is widely utilized in the plastics and coatings industry for its ability to prevent the degradation of materials caused by ultraviolet (UV) light exposure.
Strong protection against UVA (long wave) and UVB (short wave).

Does not evaporate during high-temperature processing, ensuring consistent performance.
Mixes well with most polymers and other stabilizers, enabling customized formulations.
UV 234 increases the service life of materials exposed to sunlight and UV radiation.

Works well in combination with antioxidants, light stabilizers, and other additives to form synergistic protection.
UV 234 is a powerful and versatile UV stabilizer, offering superior protection against the harmful effects of sunlight. 
Its high thermal stability and effectiveness across multiple polymer systems make it indispensable for industries requiring weather-resistant materials.

Typical use levels range between 0.1% and 1.0% by weight, depending on the application and polymer system.
Should be blended with polymers or coatings during the compounding or formulation stage.
Stable under extrusion, injection molding, or blow-molding processes.

Uses:
UV 234 low volatile benzotriazole UV light absorber and stabilizer.
Imparts outstanding light stability for polymers processed at high temperatures such as polycarbonate, polyesters, polyacetal, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane and polyurethane fibers also highly effective for polyvinylchloride, styrene homo- and copolymers.
UV 234 is often used in tandem with other stabilizers (like antioxidants) to provide comprehensive protection against environmental factors.

Widely used in polycarbonate (PC), polyesters (PET, PBT), polyamides (PA), acrylics, and polypropylene.
Common in transparent and semi-transparent plastics to prevent yellowing and loss of clarity.
UV 234 is used in automotive, industrial, and architectural coatings to prevent fading, discoloration, and cracking.

Particularly beneficial for outdoor coatings exposed to high levels of sunlight.
UV 234 enhances long-term stability of adhesives used in UV-exposed environments.
UV 234 protects against yellowing while maintaining high optical clarity.

UV 234 is used in synthetic fibers to ensure UV resistance for outdoor applications.
Protects transparent plastics like those used in eyeglasses, automotive headlamps, and greenhouse panels from yellowing and cracking.
UV 234 is a critical component in the formulation of protective coatings, varnishes, and paints, where its role is to shield surfaces from the deleterious effects of ultraviolet radiation. 

In automotive coatings, UV 234 is used to preserve the gloss, color vibrancy, and structural integrity of vehicle finishes, ensuring that cars retain their aesthetic appeal even under prolonged sun exposure. 
In industrial applications, this UV stabilizer is incorporated into coatings applied to pipelines, machinery, and outdoor equipment to prevent surface deterioration, thereby enhancing their operational lifespan and resistance to environmental stressors. 
For architectural coatings, UV 234 protects paints and varnishes used on building facades, window frames, and outdoor decorative features, ensuring these structures maintain their original appearance while withstanding the harsh effects of UV rays over time.

UV 234 protects clear plastic films and containers used for food storage from UV degradation while maintaining transparency.
Increases the durability of packaging materials for goods stored outdoors.
UV 234 stabilizes adhesives and sealants used in UV-exposed environments, such as outdoor signage, construction materials, and automotive assembly.

UV 234 maintains optical clarity in products like camera lenses, sunglasses, and protective shields.
Protects transparent polymer films and sheets used in display screens and protective coatings.
In the packaging sector, UV 234 is extensively used to stabilize materials employed in both consumer and industrial applications, ensuring durability and functionality under prolonged UV exposure. 

UV 234 is used in clear films and containers to maintain the visual clarity and protective properties of the packaging while preventing the contents from being damaged by ultraviolet radiation. 
Similarly, in industrial packaging, UV 234 enhances the UV resistance of heavy-duty plastic bags, tarpaulins, and wraps, making them suitable for storing materials and equipment outdoors without suffering from degradation due to sunlight exposure. 
UV 234 is widely used in agricultural films, such as greenhouse covers and mulching sheets, where it ensures that these films remain structurally sound and transparent, enabling effective light transmission for agricultural productivity.

Enhances the UV resistance of protective layers in solar panels, ensuring long-term functionality and efficiency.
UV 234 protects casings, connectors, and enclosures for electronic devices exposed to sunlight.
Ensures UV stability in outdoor electrical equipment.

UV 234 protects bumpers, trims, and other plastic components from fading and cracking.
Stabilizes dashboards, instrument panels, and other interior elements against UV exposure through car windows.
Provides UV resistance for polymers used in boats, docks, and marine equipment exposed to harsh sunlight and water conditions.

UV 234 prevents fading and ensures color stability in light-sensitive films.
Stabilizes plastics in outdoor sports gear like helmets, paddles, and playground equipment.
UV 234 is extensively utilized in the plastics industry as an ultraviolet absorber to stabilize and protect various polymers, including thermoplastics and engineering plastics, against the harmful effects of prolonged UV radiation. 

UV 234 is particularly effective in polycarbonate (PC), where it safeguards transparent materials such as headlight lenses, protective screens, and optical devices from yellowing, cracking, and loss of structural integrity caused by prolonged sunlight exposure. 
In polyesters like polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), UV 234 enhances the durability of packaging films, electrical insulation components, and high-performance fibers by preventing photo-degradation and maintaining mechanical strength. 

UV 234 is widely used in polypropylene (PP) to provide outdoor items such as garden furniture, storage containers, ropes, and construction textiles with resistance to fading and brittleness when subjected to ultraviolet light for extended periods.
In the automotive sector, UV 234 is an indispensable additive that provides long-term UV protection to both interior and exterior vehicle components.

For exterior parts, including bumpers, side mirrors, trims, and painted surfaces, it ensures that these components remain visually appealing by preventing fading, discoloration, and cracking, which are often caused by constant exposure to intense sunlight. 
Meanwhile, in interior automotive applications, UV 234 is used to stabilize polymers used in dashboards, instrument panels, and synthetic upholstery, which are prone to heat and light-induced degradation through car windows. 
By offering such protection, UV 234 contributes to extending the lifespan of automotive parts, reducing maintenance costs, and maintaining the overall aesthetic and functional quality of the vehicle.

Safety Profile:
UV 234 is considered hazardous to aquatic environments, particularly to fish, algae, and aquatic invertebrates. 
It may bioaccumulate and persist in the environment, causing long-term ecological effects.
Improper disposal or accidental release into soil or water bodies can result in contamination, potentially impacting local ecosystems.

Generally considered low in toxicity. 
Handle with care to avoid inhalation or ingestion.
UV 234 stable under environmental conditions but not readily biodegradable.

Direct contact with UV 234 powder or solutions can cause irritation to the skin, eyes, and mucous membranes. 
Prolonged exposure may lead to redness, itching, or discomfort.
Inhalation of dust or fine particles of UV 234 can irritate the respiratory tract, leading to coughing, sneezing, or shortness of breath. 

This is especially a concern in poorly ventilated environments.
UV 234 prolonged or repeated exposure may sensitize some individuals, causing allergic skin reactions.
Although not highly toxic, ingestion of large quantities may cause gastrointestinal irritation, nausea, or other symptoms.