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UV Stabilizer (Tinuvin 234) protects organic polymers as well as pigments from UV light, improving and preserving the technical and visual performance of such applications.
UV Stabilizer (Tinuvin 234) is a high molecular weight ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting excellent light stability to a variety of polymers.
UV Stabilizer (Tinuvin 234) is a high-performance ultraviolet light absorber used in many polymer applications.
CAS Number: 2440-22-4
Molecular Formula: C13H11N3O
Molecular Weight: 225.25
EINECS Number: 219-470-5
Synonyms: Drometrizole, 2440-22-4, 2-(2-HYDROXY-5-METHYLPHENYL)BENZOTRIAZOLE, 2-(2H-Benzotriazol-2-yl)-4-methylphenol, Drometrizol, 2-(2'-Hydroxy-5'-methylphenyl)benzotriazole, Phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-, Drometrizolum, DTXSID1027479, 5X93W9OFZL, NSC-91885, DTXCID207479, 219-470-5, RefChem:590441, 607-063-9, Benazol P, 2-(2H-Benzotriazol-2-yl)-p-cresol, Tinuvin P, 2-(2H-benzo[d][1,2,3]triazol-2-yl)-4-methylphenol, 2-(2-Benzotriazolyl)-p-cresol, UV Absorber-1, Tin P, Porex P, 2-Benzotriazolyl-4-methylphenol, 2240-22-4, UV-P, 2-(benzotriazol-2-yl)-4-methylphenol, 2-(2-Hydroxy-5-methylphenyl)-2H-benzotriazole, p-Cresol, 2-(2H-benzotriazol-2-yl)-, Ultraviolet Absorbent UV-P, NSC 91885, MFCD00022903, 2-Benzotriazol-2-yl-4-methyl-phenol, 2-(2H-1,2,3-Benzotriazol-2-yl)-4-methylphenol, 2-(2'-Hydroxy-5-methylphenyl)benzotriazole, NCGC00166243-01, benazol II, Tinuvin II, Drometrizole [USAN:INN], Drometrizolum [INN-Latin], CAS-2440-22-4, Drometrizol [INN-Spanish, French], EINECS 219-470-5, UNII-5X93W9OFZL, BRN 0615546, BenazolP, Uvazol P, Lowilite 55, Topanex 100BT, UV-P (drometrizole), 2-(benzotriazol-2-yl)-4-methyl-phenol, Drometrizole (Standard), DROMETRIZOLE [MI], ChemDiv2_000180, Drometrizole (USAN/INN), DROMETRIZOLE [INN], DROMETRIZOLE [USAN], EC 219-470-5, NCIOpen2_005624, SCHEMBL15616, DROMETRIZOLE [MART.], MLS000713327, DROMETRIZOLE [USP-RS], DROMETRIZOLE [WHO-DD], CHEMBL1564747, SCHEMBL11462292, SCHEMBL11594636, SCHEMBL29046137, SCHEMBL29350665, MCPKSFINULVDNX-UHFFFAOYSA-, MSK3457, CHEBI:134926, HMS1369I04, HMS2650F14, 2-(2H-bentriazol-2-yl)-p-cresol, NSC91885, Tox21_112369, Tox21_200876, Tox21_303578, WLN: T56 BNNNJ CR BQ E1, BBL013151, STK096143, (BENZOTRIAZOL-2-YL)-P-CRESOL, AKOS000369894, Tox21_112369_1, CCG-103301, HY-131551R, NCGC00166243-02, NCGC00166243-03, NCGC00257391-01, NCGC00258430-01, 2(2'hydroxy5'-methylphenyl)benzotriazole, AC-11259, AS-12550, DA-52699, MSK3457-1000, SMR000272808, 4-methyl-2-(2H-benzotriazol-2-yl)phenol, o-[2H-benzotriazol-2-yl)-4-methylphenol, phenol, 2-(benzotriazol-2-yl)-4-methyl-, 2-(2-hydroxy-5-methylphenyl) benzotriazole, 2-(2H-benzotriazol-2-yl)-4-methyl-phenol, 2-(2h-benzotriazole-2-yl)-4-methylphenol, DB-226477, DB-226478, HY-131551, 2-(2-hydroxyl-5-methylphenyl) benzotriazole, CS-0136496, EU-0000279, H0560, NS00010695, ST50271127, 2-(2'-hydroxy-5'-methylphenyl) benzotriazol, 2-(2-hydrobenzotriazol-2-yl)-4-methylphenol, 2-(2'-hydroxy-5'-methylphenyl) benzotriazole, 2-(2'-hydroxy-5'-methylphenyl)-benzotriazole, D03913, 2-(2'-Hydroxy-5-methylphenyl)2H-benzotriazole, 2-(2-Hydroxy-5-methylphenyl)benzotriazole, 97%, AE-641/02338040, F238745, SR-01000390735, 3-(2H-benzotriazole-2-yl)-4-hydroxyphenyl methane, SR-01000390735-1, 2-(2H-1,2,3-Benzotriazol-2-yl)-4-methylphenol #, Q27263002, Drometrizole, United States Pharmacopeia (USP) Reference Standard, 2-(2-Hydroxy-5-methylphenyl)benzotriazole Solution in Methanol, 1000 µg/mL, InChI=1/C13H11N3O/c1-9-6-7-13(17)12(8-9)16-14-10-4-2-3-5-11(10)15-16/h2-8,17H,1H3, (2'-Hydroxy-5mg-methylphenyl) benzotriazole;2-(2H-Benzotriazol-2-yl)-p-cresol(UV-P);TinuvinP/2-(2H-Benzotriazol-2-yl)-p-cresol;LOTSORB UV P;2-(2H-1,2,3-Benzotriazol-2-yl)-4-methylphenol;2-(2h-benzotriazol-2-yl)-4-methyl-pheno;2-(2h-benzotriazol-2-yl)-p-creso;2-(2-hydroxy-5-methyl-phenyl)-2H-benzotriazole
UV Stabilizer (Tinuvin 234) is a high molecular weight ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting excellent light stability to a variety of polymers.
Possesses features such as low volatility, very good light absorbing characteristics and good compatibility in various substrates.
UV Stabilizer (Tinuvin 234) is used in hotmelt, solvent based, reactive and radiation curing adhesives and sealants for molded articles, films, sheets and fibers.
UV Stabilizer (Tinuvin 234) belongs to the class of hydroxyphenyl benzotriazole compounds.
Its main function is to protect materials from degradation caused by UV radiation.
UV Stabilizer (Tinuvin 234) works by absorbing harmful UV light and converting it into harmless thermal energy.
This prevents the breakdown of chemical bonds within the polymer structure.
As a result, materials retain their color, gloss, and mechanical strength for a longer time.
UV Stabilizer (Tinuvin 234) is commonly used in plastics, coatings, and adhesives that are exposed to sunlight.
These include polycarbonate, polyester, polyurethane, acrylic, and PVC systems.
By reducing photo-oxidation, Tinuvin 234 enhances durability and outdoor performance.
The compound appears as a light yellow crystalline powder or solid.
UV Stabilizer (Tinuvin 234) is stable under normal storage conditions and has a high melting point.
It dissolves in many organic solvents but is practically insoluble in water.
UV Stabilizer (Tinuvin 234) is particularly suited for transparent or light-colored polymers.
It allows materials to maintain optical clarity without introducing haze or discoloration.
This makes it ideal for films, sheets, and optical components that require transparency.
In automotive and industrial coatings, UV Stabilizer (Tinuvin 234) prevents fading and chalking.
It works synergistically with hindered amine light stabilizers (HALS) for stronger protection.
Together, they provide long-lasting resistance to sunlight, heat, and weathering.
In packaging applications, it safeguards the contents and container materials from UV exposure.
This is especially useful for food, beverage, and cosmetic packaging that must remain stable under light.
By doing so, it extends both product shelf life and aesthetic quality.
UV Stabilizer (Tinuvin 234) is also used in adhesives, sealants, and inks.
It prevents yellowing and maintains flexibility in products cured or stored under light.
This ensures consistent performance even under continuous UV illumination.
It has excellent thermal stability, making it suitable for processing at high temperatures.
This property allows it to be used in extrusion, molding, and coating operations without decomposition.
It remains effective even after repeated heating and cooling cycles.
UV Stabilizer (Tinuvin 234) is a versatile UV stabilizer known for its efficiency and stability.
It provides long-term light protection for plastics, coatings, and elastomers.
Its compatibility, transparency, and durability make it one of the most reliable UV absorbers in modern materials.
UV Stabilizer (Tinuvin 234) is an ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting good light stability to a wide variety of polymers.
UV Stabilizer (Tinuvin 234), also referred to as phenolic benzotriazoles, are an important class of UV absorbers comprising the benzotriazole building block.
UV Stabilizer (Tinuvin 234) is a class of organic compounds that contain both a phenol and a benzotriazole group in their molecular structure.
These two parts work together to provide powerful ultraviolet (UV) light absorption properties.
Because of this, they are commonly used as UV stabilizers in many industrial and consumer products.
They protect polymers, plastics, coatings, and fibers from degradation caused by sunlight exposure.
By absorbing harmful UV radiation, they prevent discoloration, brittleness, and loss of mechanical strength.
This makes them essential additives in outdoor materials such as automotive coatings and packaging films.
Melting point: 125.5–129.5 °C (lit.)
Boiling point: 225 °C at 10 mmHg
Density: 1.38
Vapor pressure: 0 Pa at 20 °C
Refractive index: 1.5600 (estimated)
Flash point: 54 °C
Storage temperature: 15–25 °C
Solubility: Slightly soluble in DMSO and methanol
Form: Solid
pKa: 8.15 ± 0.43 (predicted)
Color: Off-white to pale yellow
Water solubility: 173 µg/L at 20 °C
Merck: 14,3447
Stability: Hygroscopic
InChIKey: MCPKSFINULVDNX-UHFFFAOYSA-N
LogP: 4.2 at 25 °C
UV Stabilizer (Tinuvin 234) is a benzotriazole-type UV absorber specifically designed for long-term outdoor protection.
Its molecular structure contains aromatic rings that strongly absorb ultraviolet radiation in the 290–400 nm range.
This makes it highly effective at shielding polymers and coatings from photo-oxidative degradation.
UV Stabilizer (Tinuvin 234) acts by intercepting UV photons before they can reach the polymer chains.
It dissipates the absorbed energy safely as low-level heat without altering the polymer itself.
This process prevents chain scission, crosslinking, and surface cracking in treated materials.
UV Stabilizer (Tinuvin 234) is compatible with a wide range of thermoplastics and thermosetting resins.
It is especially efficient in polycarbonate, polyesters, polymethyl methacrylate, and polyacetal.
In these materials, it helps maintain transparency, toughness, and resistance to embrittlement.
It is frequently used in combination with antioxidants and hindered amine light stabilizers (HALS).
While UV Stabilizer (Tinuvin 234) absorbs UV radiation, HALS neutralize free radicals formed by residual light exposure.
Together, they form a synergistic stabilization system that offers superior protection and longevity.
In automotive applications, it protects clear coats, base coats, and plastic components from sunlight damage.
It prevents color fading, gloss reduction, and surface microcracking caused by extended UV exposure.
This contributes to the preservation of both aesthetic and mechanical properties in vehicles.
In the construction industry, UV Stabilizer (Tinuvin 234) is used in architectural coatings and sealants.
It allows exterior materials such as plastics, composites, and paints to resist sunlight and weathering.
This ensures longer maintenance intervals and sustained appearance for outdoor structures.
In optical and electronic components, it protects sensitive materials from ultraviolet light degradation.
These include lenses, display covers, and protective films that must remain clear and functional.
Its high optical purity ensures minimal interference with light transmission.
UV Stabilizer (Tinuvin 234) is also used in agricultural films and greenhouse covers.
It stabilizes the plastic material used in these films against sunlight-induced brittleness.
This extends their service life and helps maintain light transmission for plant growth.
In adhesives and sealants, it maintains flexibility and transparency under light exposure.
It prevents yellowing and hardening, which are common issues in UV-sensitive bonding materials.
This is important for high-performance glazing, laminating, and encapsulation applications.
The product performs well in powder coatings and UV-cured coatings.
It helps maintain surface smoothness and gloss, even under intense UV radiation.
Its high thermal stability prevents degradation during the curing or baking process.
UV Stabilizer (Tinuvin 234) is effective at very low concentrations, typically between 0.1% and 1% by weight.
This makes it cost-efficient and easy to incorporate into formulations.
It distributes uniformly throughout the polymer matrix, providing consistent protection.
The compound is non-volatile and resistant to leaching or migration.
This ensures that the stabilizer remains within the product throughout its lifetime.
It is particularly useful in outdoor applications where water resistance is essential.
From a chemical standpoint, UV Stabilizer (Tinuvin 234) has excellent photostability and oxidation resistance.
It maintains its molecular integrity even after prolonged sunlight exposure.
This feature makes it more durable than many older-generation UV absorbers.
UV Stabilizer (Tinuvin 234) is also used in aerospace and marine coatings that face extreme UV conditions.
It prevents material fatigue and color change in components exposed to high-altitude or maritime sunlight.
This helps extend service intervals and maintains structural reliability.
In packaging for pharmaceuticals and cosmetics, it prevents degradation of light-sensitive ingredients.
It protects both the contents and the packaging polymer from UV-induced discoloration.
This keeps products stable and visually appealing during storage and transport.
The compound’s effectiveness does not diminish under repeated exposure cycles.
Even after years of sunlight, materials stabilized with UV Stabilizer (Tinuvin 234) retain their clarity and toughness.
This long-term stability is one of its most valued properties in high-end materials.
UV Stabilizer (Tinuvin 234) is also compatible with pigment systems used in colored plastics.
It prevents color fading by filtering UV radiation that would otherwise break down colorants.
This ensures that bright and uniform coloration is maintained for extended periods.
In summary, UV Stabilizer (Tinuvin 234) is a high-efficiency, non-yellowing UV absorber for demanding applications.
It provides excellent long-term protection for transparent and colored materials exposed to sunlight.
Its durability, broad compatibility, and optical clarity make it a preferred stabilizer in modern polymer technology.
UV Stabilizer (Tinuvin 234) is chemically phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl) grade.
UV Stabilizer (Tinuvin 234) 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.
It 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 Stabilizer (Tinuvin 234) ranges between 0.15 and 0.60%, depending on substrate and performance requirements of the final application.
Uses:
An ultraviolet light absorber for stabilizing plastics and other organic materials against discoloration and deterioration.
UV Stabilizer (Tinuvin 234) are primarily used as ultraviolet (UV) light absorbers in industrial and consumer products.
They protect polymers and coatings from photodegradation caused by sunlight exposure.
This makes them essential components in materials that must maintain color and strength outdoors.
They are widely used in plastics to prevent yellowing, brittleness, and cracking.
These additives absorb UV radiation before it can break down the polymer chains.
They are especially effective in transparent materials such as polycarbonate, acrylic, and PVC.
UV Stabilizer (Tinuvin 234) is mainly used as a UV stabilizer in plastics, coatings, and adhesives.
Its primary function is to protect materials from degradation caused by ultraviolet radiation.
It helps preserve the color, gloss, and mechanical strength of polymers exposed to sunlight.
UV Stabilizer (Tinuvin 234) is widely applied in transparent and light-colored thermoplastics.
Materials such as polycarbonate, polyester, acrylic, and polyacetal benefit from its UV absorption ability.
These plastics retain clarity and toughness even after long-term outdoor exposure.
UV Stabilizer (Tinuvin 234) is frequently used in automotive coatings and plastic components.
It protects car exteriors, dashboards, and trim parts from color fading and surface cracking.
This ensures that vehicles maintain their appearance and durability under intense sunlight.
In the construction industry, it is incorporated into architectural coatings, sealants, and plastics.
It prevents discoloration, embrittlement, and weathering in outdoor materials.
This improves the longevity and maintenance cycle of building façades and exterior finishes.
UV Stabilizer (Tinuvin 234) is also used in powder coatings and UV-cured coatings to improve resistance against sunlight.
It maintains the coating’s surface smoothness, gloss, and mechanical integrity.
These benefits make it valuable for industrial equipment, machinery, and outdoor metal parts.
In packaging applications, UV Stabilizer (Tinuvin 234) protects both the container and its contents from UV exposure.
It is used in food, beverage, cosmetic, and pharmaceutical packaging materials.
This prevents light-induced degradation and extends product shelf life.
In adhesives and sealants, it enhances stability under exposure to natural or artificial light.
UV Stabilizer (Tinuvin 234) prevents yellowing, hardening, and loss of adhesion in transparent bonding systems.
This makes it useful in glass lamination, construction adhesives, and flexible joints.
UV Stabilizer (Tinuvin 234) is a preferred stabilizer in agricultural films and greenhouse covers.
It prevents the plastic film from becoming brittle or opaque after continuous sunlight exposure.
This ensures better durability, flexibility, and light transmission for plant growth.
In optical and electronic devices, it protects lenses, screens, and covers from UV damage.
It maintains optical transparency and prevents yellowing of sensitive components.
This improves the performance and lifespan of visual and display systems.
In marine and aerospace coatings, it provides resistance against intense UV and environmental stress.
It prevents fading, microcracking, and surface erosion caused by prolonged light exposure.
This helps maintain both visual and structural integrity in extreme environments.
UV Stabilizer (Tinuvin 234) is used in paints, inks, and varnishes that require color retention and gloss stability.
UV Stabilizer (Tinuvin 234) keeps coatings vibrant and prevents dulling caused by prolonged sunlight exposure.
This makes it suitable for decorative, protective, and industrial coatings.
UV Stabilizer (Tinuvin 234) is often combined with HALS (Hindered Amine Light Stabilizers) for synergistic protection.
This combination offers superior defense against both UV radiation and oxidation.
UV Stabilizer (Tinuvin 234) ensures that polymers remain stable even under harsh outdoor conditions.
UV Stabilizer (Tinuvin 234) is applied in the production of films, sheets, and molded parts that must remain clear.
These include safety glasses, optical discs, display panels, and protective screens.
Its ability to protect without affecting transparency makes it ideal for such uses.
In fibers and textiles, UV Stabilizer (Tinuvin 234) helps prevent fading and loss of strength.
It stabilizes fabrics used in outdoor clothing, furniture, and industrial applications.
This ensures that fibers retain flexibility, softness, and color under sunlight.
UV Stabilizer (Tinuvin 234) is incorporated into lubricant and oil additives for UV protection in exposed systems.
This reduces oxidation and discoloration in oils or greases that experience light exposure.
As a result, the quality and stability of lubricants are improved over time.
In 3D printing and polymer processing, UV Stabilizer (Tinuvin 234) ensures the stability of light-exposed resins.
It prevents UV-cured materials from discoloring or degrading during post-processing.
This helps produce durable, aesthetically consistent final parts.
UV Stabilizer (Tinuvin 234) is used in high-performance composites and protective films.
It safeguards resin matrices in carbon fiber or fiberglass structures against photo-degradation.
This makes it essential in aerospace, automotive, and outdoor engineering materials.
UV Stabilizer (Tinuvin 234) is used wherever sunlight protection, color stability, and surface durability are critical.
Its effectiveness, compatibility, and optical clarity make it one of the most trusted UV stabilizers.
It remains a key additive for maintaining the performance and appearance of modern polymer products.
Safety Profile:
In accordance with good industrial practice, handle with care and avoid unnecessary personal contact.
Prevent contamination of the environment avoid dust formation and ignition sources.
UV Stabilizer (Tinuvin 234) are generally considered low in toxicity when handled properly.
However, direct exposure to high concentrations of dust or powder may cause mild irritation.
Therefore, it is recommended to handle them with standard protective measures.
UV Stabilizer (Tinuvin 234) is considered a low-toxicity UV stabilizer, but it can still present some health and environmental hazards if not handled properly.
In its raw powder or dust form, it may cause irritation to the eyes, skin, or respiratory tract.
For this reason, protective gloves, goggles, and masks are recommended during handling.
Eye contact with Tinuvin 234 may lead to mild irritation or redness.
Although it is not corrosive, fine particles can cause discomfort and temporary tearing.
Eyes should be rinsed thoroughly with water if contact occurs.
Skin contact may result in dryness or irritation, particularly with prolonged or repeated exposure.
UV Stabilizer (Tinuvin 234) is not known to cause serious burns or allergic reactions, but sensitive skin may react mildly.
Washing with soap and water after handling is advised to avoid irritation.
Inhalation of dust or aerosolized particles can irritate the nose, throat, and lungs.
Symptoms may include coughing, sneezing, or slight throat discomfort.
Adequate ventilation and the use of a dust mask help minimize this risk.
Ingestion is not expected to occur under normal use, but accidental swallowing may cause stomach upset.
It can lead to nausea or irritation of the gastrointestinal tract if consumed in significant quantities.
Medical attention should be sought if ingestion occurs accidentally.
At high processing temperatures, UV Stabilizer (Tinuvin 234) may decompose and release organic vapors.
These vapors can cause mild respiratory irritation or an unpleasant odor if inhaled in confined spaces.
Proper exhaust ventilation should be used during melting, extrusion, or coating operations.
