EVERSORB 76

Eversorb 76 is often used in powder coatings, thermosets, and high-performance clear coatings subjected to continuous outdoor exposure.
Eversorb 76 is also incorporated in systems where colour retention, gloss preservation, and substrate integrity over long service life are critical—such as in façade panels, architectural components and specialty plastics.
Eversorb 76s thermal compatibility makes it suitable for processing conditions involving elevated temperatures, ensuring the additive remains effective and stable during curing or extrusion.

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

Synonyms: 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)-, Tinuvin 234, BENZOTRIAZOLE BT, EINECS 274-570-6, UNII-9B1ZX3NU45, 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, 274-570-6, 2-(3',5'-bis(alpha,alpha-dimethylbenzyl)-2'-hydroxyphenyl)benzotriazole, 2-[3',5'-bis(alpha,alpha-dimethylbenzyl)-2'-hydroxyphenyl]benzotriazole, RefChem:84131, 2-(2-hydroxy-3,5-di-alpha-cumylphenyl)-2h-benzotriazole, 2-(2H-BENZOTRIAZOL-2-YL)-4,6-BIS(ALPHA,ALPHA-DIMETHYLBENZYL)PHENOL, 2-(2'-HYDROXY-3',5'-BIS(ALPHA,ALPHA-DIMETHYLBENZYL)PHENYL)BENZOTRIAZOLE, OLFNXLXEGXRUOI-UHFFFAOYSA-N, 70321-86-7, UV-234, 2-(2H-Benzo[d][1,2,3]triazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, 2-(benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, C30H29N3O, MFCD00134705, UV Absorber 234, 2-(1,2,3-BENZOTRIAZOL-2-YL)-4,6-BIS(2-PHENYLPROPAN-2-YL)PHENOL, SCHEMBL29903, Ultraviolet AbsorbentUV-234, CHEMBL1892237, SCHEMBL29354035, MSK3462, 2-(benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenyl-ethyl)phenol, Tox21_202571, MSK3462-100A, AKOS015895747, NCGC00164197-01, NCGC00260120-01, AS-13201, CAS-70321-86-7, B3717, CS-0135912, NS00004642, UV-234 Solution in Acetonitrile, 100ug/mL, D97736, 321B867, A836845, Q27272294, 2-(2-benzotriazolyl)-4,6-bis(2-phenylpropan-2-yl)phenol, 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-[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

Eversorb 76 is a high molecular weight ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting excellent light stability to a variety of polymers.
Eversorb 76 acts as a UV absorber, particularly recommended for use in automotive coatings, automotive refinish, coil coatings, wood and powder coatings.
UV absorber used as a light stabiliser, mainly used for coatings. 

Excellent stability to heat, odourless, provides no effect on initial colour of the substrate.
Eversorb 76 is a benzotriazole-type UV absorber, identified chemically as 2-[2H-benzotriazol-2-yl]-4,6-bis(1-methyl-1-phenylethyl)phenol.
Eversorb 76 typically appears as a fine pale powder and is designed to withstand high temperatures and extreme environmental conditions without significant degradation.

The material is characterized by low volatility, good thermal stability, and negligible effect on the initial colour of the substrate when incorporated.
In its formulation and processing behaviour, Eversorb 76 integrates readily into coatings, plastics, and other polymer systems where prolonged UV exposure would otherwise cause yellowing or property loss.

The presence of the benzotriazole group enables efficient absorption of high-energy UV radiation in the 300–400 nm range, thereby protecting the host polymer from photochemical breakdown.
Because of its robust performance under demanding conditions, it is especially suited to applications such as automotive OEM and refinish coatings, coil coatings, and other high-end exterior finishes.

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 temperature : 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 °C
InChI : InChI=1S/C30H29N3O/c1-29(2,21-13-7-5-8-14-21)23-19-24(30(3,4)22-15-9-6-10-16-22)28(34)27(20-23)33-31-25-17-11-12-18-26(25)32-33/h5-20,34H,1-4H3
InChIKey : OLFNXLXEGXRUOI-UHFFFAOYSA-N
SMILES : C1(O)=C(C(C)(C2=CC=CC=C2)C)C=C(C(C)(C2=CC=CC=C2)C)C=C1N1N=C2C=CC=CC2=N1

Eversorb 76 is a high-performance ultraviolet (UV) absorber belonging to the benzotriazole chemical family, specifically developed to protect polymers, coatings, and films from UV degradation.
It is chemically identified as Eversorb 76, a compound known for its strong UV absorption capacity and excellent stability under harsh environmental conditions.
In its pure form, it appears as a pale yellow to off-white crystalline powder with very low volatility and outstanding resistance to thermal decomposition.

The primary function of Eversorb 76 is to absorb harmful UV radiation in the 300–400 nm wavelength range before it can reach and damage the polymer chains.
By doing so, it prevents photo-oxidation, yellowing, surface cracking, and loss of mechanical strength that occur in plastics and coatings exposed to sunlight.
The absorbed UV energy is harmlessly dissipated as heat, ensuring that the polymer retains its physical and optical properties over time.

Eversorb 76 is particularly valued for its exceptional compatibility with a broad range of thermoplastics and thermosetting resins.
It can be easily incorporated into materials such as polycarbonate, polyamide, polyacetal, polyphenylene sulfide, and polyesters without affecting clarity or transparency.
This makes it ideal for use in engineering plastics, automotive parts, optical films, and outdoor equipment where long-term exposure to sunlight is unavoidable.

In coatings and paints, Eversorb 76 serves as a protective additive that maintains color stability, gloss, and surface smoothness.
It is widely used in automotive topcoats, powder coatings, architectural finishes, and industrial coatings that require durability and weather resistance.
When combined with hindered amine light stabilizers (HALS), it creates a synergistic system that enhances both UV and thermal stability, offering superior long-term protection.

The additive is also employed in transparent coatings and plastic films that must retain optical clarity even after extended UV exposure.
Its non-yellowing nature ensures that transparent or light-colored materials remain visually appealing without discoloration.
Because of its low volatility, it remains effective throughout the product’s life cycle, even when subjected to high-temperature processing or curing.

Eversorb 76 is designed for applications that demand resistance to photodegradation under outdoor or high-radiation conditions.
It is commonly used in the manufacture of automotive components, protective films, fibers, adhesives, and electronic housings.
Its ability to endure both high heat and prolonged UV exposure makes it a preferred additive in industries that prioritize material longevity and aesthetic performance.

From a processing perspective, Eversorb 76 exhibits excellent solubility in most organic solvents and uniform dispersion in polymer matrices.
It does not interfere with curing reactions, pigment dispersion, or polymer flow properties, making it compatible with standard extrusion, injection molding, and coating techniques.
Its high molecular weight minimizes migration and blooming, ensuring long-term stability and consistent surface appearance.

In terms of performance benefits, Eversorb 76 protects polymers from surface chalking, microcracking, and gloss loss caused by solar radiation.
It slows the oxidation of surface layers and inhibits the formation of free radicals that degrade polymer chains.
As a result, treated materials exhibit extended service life, reduced maintenance costs, and improved resistance to weathering and aging.

Environmental and safety considerations also make Eversorb 76 an attractive option compared to older UV stabilizers.
It is non-toxic, non-corrosive, and compliant with international environmental regulations for polymer additives.
Its chemical inertness prevents leaching or contamination, allowing it to be safely used in long-term outdoor and industrial applications.

Because of its balance between efficiency and stability, Eversorb 76 is frequently chosen as a reference-grade UV absorber in research and high-end product formulations.
It serves as a benchmark for evaluating the durability and UV resistance of new polymer systems.
In both industrial-scale production and laboratory use, it remains one of the most effective light-stabilizing agents available for polymer and coating protection.

In summary, Eversorb 76 is a thermally stable, non-volatile, and highly efficient benzotriazole-based UV absorber.
It offers superior protection against sunlight-induced degradation in plastics, paints, and coatings while maintaining optical clarity and material strength.
Through its versatile application and durable performance, it contributes significantly to the longevity, safety, and visual appeal of modern engineered materials.

Eversorb 76 absorbers enable polymer retain color, gloss, and physical properties under long term UV light exposure, regarded an effective solution for polymer degradation caused by high-energy light. 
Eversorb 76 series deliver superior UV protection to enhance the performance of polymers in coatings, plastics and many advanced applications, preventing against degradation problems such as discoloration, gloss loss, as well as surface chalking

Eversorb 76 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.
Use levels of UV Absorber 234 Eversorb 76 range between 0.15 and 0.60 %, depending on substrate and performance requirements of the final application. 

Eversorb 76 can be used alone or in combination with other functional additives such as antioxidants (hindered phenols, phosphites) and HALS light stabilizers, where often a synergistic performance is observed.
Extensive performance data of UV Absorber 234 alone or in combination with other additives are available in many of the substrates listed above.
Eversorb 76 exhibits a very low order of oral toxicity and does not present any abnormal problems in its handling or general use. 

Detailed information on handling and any precautions to be observed in the use of the product(s) described in this leaflet can be found in our relevant health and safety information sheet.
Eversorb 76 is a benzotriazole type UV absorber. 
Eversorb 76 is compatible with coating exposed to high temperatures and/or extreme environmental stresses.

Eversorb 76 is a high molecular weight ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting excellent light stability to a variety of polymers.
Eversorb 76 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.

Uses Of Eversorb 76:
Eversorb 76 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. 
Applications include molded articles, films, sheets and fibers.
Eversorb 76 is a 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.
Eversorb 76 is widely used across multiple industries for the long-term protection of polymers, coatings, and films from ultraviolet (UV) degradation.
It serves as a high-performance UV absorber that maintains the color, gloss, and structural integrity of materials exposed to sunlight or other UV sources.

Because of its low volatility and strong UV absorption, it remains one of the most reliable additives for outdoor and high-temperature applications.
In the plastics industry, Eversorb 76 is commonly used in thermoplastics such as polycarbonate, polyester, polyamide, and polyacetal.
It prevents yellowing, embrittlement, and loss of transparency caused by UV radiation, thereby extending the service life of plastic components.

Typical applications include automotive lenses, transparent housings, optical films, and protective sheets.
In the automotive sector, Eversorb 76 is added to both exterior coatings and interior polymer parts to prevent discoloration and degradation.
It helps maintain the clarity and gloss of automotive topcoats and transparent plastics such as headlights or dashboard panels.

Its high thermal stability ensures effectiveness during high-temperature paint baking or polymer molding processes.
Within the architectural and industrial coatings field, Eversorb 76 is used in powder coatings, clear lacquers, and weather-resistant finishes.
It provides long-term gloss retention, color stability, and surface protection under prolonged sunlight and harsh weather.

When combined with HALS (Hindered Amine Light Stabilizers), it delivers synergistic resistance against UV and thermal oxidation.
In the packaging and optical materials sector, Eversorb 76 ensures transparency and light stability for films and sheets.
It prevents hazing and photochemical discoloration in applications such as food packaging, display films, and optical filters.

Its non-yellowing properties make it particularly valuable for maintaining clarity in high-purity optical or electronic films.
In the textile and fiber industry, Eversorb 76 enhances UV resistance of synthetic fibers such as polyester, nylon, and acrylic.
It helps preserve strength and color in fabrics, ropes, and nets used outdoors in marine, automotive, and construction applications.

This ensures that fibers retain elasticity and durability even after long-term exposure to sunlight.
In adhesives, sealants, and elastomers, the compound is incorporated to maintain flexibility and prevent cracking or discoloration.
It protects bonding materials from sunlight-induced deterioration, which can compromise adhesion or mechanical properties.

This makes it ideal for outdoor structural adhesives and flexible sealant systems used in construction and transport.
Eversorb 76 also finds use in electronics and optical devices, where components require high transparency and UV stability.
It protects transparent housings, display screens, and light guides from photodegradation and color shifting.

By maintaining optical clarity, it enhances both performance and longevity of sensitive electronic assemblies.
In marine and outdoor applications, Eversorb 76 is used in coatings and composites that endure intense sunlight, humidity, and salt exposure.
It minimizes surface erosion and discoloration of boats, outdoor furniture, and fiberglass-reinforced components.

Its hydrophobic and thermally stable structure ensures consistent performance even in harsh environmental conditions.
Eversorb 76 is also a key additive in research and high-performance formulations where precise UV stabilization is required.
It serves as a benchmark material in polymer stabilization studies and long-term weathering tests.

Its consistent performance makes it valuable for evaluating the UV resistance of new coatings and polymer systems.
In summary, Eversorb 76 is used in plastics, coatings, films, adhesives, textiles, and composite materials wherever long-term UV protection is critical.

Eversorb 76 enhances color retention, transparency, gloss, and mechanical properties by preventing photochemical degradation.
Its combination of thermal endurance, non-yellowing behavior, and compatibility makes it a preferred UV stabilizer for modern material protection.

Safety Profile Of Eversorb 76:
Eversorb 76 is generally considered a low-hazard additive, but proper handling precautions are necessary to ensure health and environmental safety.
In its fine powder form, it can irritate the eyes, skin, and respiratory tract if inhaled or handled carelessly.
Although not acutely toxic, continuous exposure without protection may lead to localized irritation or discomfort over time.

When it comes into contact with skin, Eversorb 76 may cause slight dryness or irritation due to its organic aromatic composition.
Repeated contact without gloves can strip the skin’s natural oils, leading to mild redness or roughness.
Workers should wear protective gloves and wash exposed areas thoroughly after use to prevent irritation.

Eye exposure to dust or airborne particles may result in redness, tearing, or temporary discomfort.
Because the compound can become airborne during weighing or mixing, goggles or face shields are strongly recommended.
In the event of eye contact, immediate rinsing with water for several minutes can prevent inflammation or lasting irritation.