PRODUCTS

THASORB UV-234

Thasorb UV-234 exhibits high absorbance in the 300–400nm region and minimal absorbance in the visible region (> 400 nm) of the spectrum.
Thasorb UV-234 is especially suited for polycarbonates, polyesters and other polymers usually processed at high temperatures.
Thasorb UV-234 can be used alone or in combination with other additives (HALS, antioxidants).

CAS Number: 70321-86-7 (this is the widely used CAS for UV-234)
EC Number: 274-570-6
Chemical Name:2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol
Molecular Formula: commonly reported as C₃₀H₂₉N₃O
Molecular Weight: ~ 447.6–448 g·mol⁻¹

SYNONYMS:
UV-234, Tinuvin 234, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, 2-(2-hydroxy-3,5-di-α-cumylphenyl)-2H-benzotriazole, 2-(2H-benzotriazol-2-yl)-4,6-bis(2-phenyl-2-propanyl)phenol, 2-(3',5'-bis(α,α-dimethylbenzyl)-2'-hydroxyphenyl)benzotriazole, BLS-234, Linsorb UV-234, Tinuvin®-234, UV-234, 2-(2H-BENZOTRIAZOL-2-YL)-4,6-BIS(1-METHYL-1-PHENYLETHYL)PHENOL, TINUVIN 234, TINUVIN 900, UV Absorber UV-234, 2-(2h-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)-pheno, Benzotriazol-2-yl-4,6-bis(1-methyl-1-phenylethyl)phenols (UV 234), BLS234, UV-900, Eusorb UV-900, Phenol,2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)-, 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, 2-(2H-Benzotriazol-2-yl)-4,6-bis(α,α-dimethylbenzyl)phenol, Tinuvin 234, Benzotriazole BT, Tinuvin 900, 2-[3′,5′-Bis(1-methyl-1-phenylethyl)-2′-hydroxyphenyl]benzotriazole, 2-[2-Hydroxy-3,5-bis(α,α-dimethylbenzyl)phenyl]benzotriazole, 2-[2′-Hydroxy-3′,5′-bis(α,α-dimethylbenzyl)phenyl]benzotriazole, 2-[2-Hydroxy-3,5-bis(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole, 2-(3′,5′-Bis(α,α-dimethylbenzyl)-2′-hydroxyphenyl)benzotriazole, 2-(2-Hydroxy-3,5-di-α-cumylphenyl)-2H-benzotriazole, Eversorb 234, Eversorb 76, Tinuvin 234D, UV 234, UV 234 (antioxidant), Lowilite 234, 2-[2-Hydroxy-3,5-di(1,1-dimethylbenzyl)phenyl]-2H-benzotriazole, 2-[2-Hydroxy-3,5-di(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole, 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-l-phenylethyl)phenol, Uvinul 3034, T 234, 2-(2-Hydroxy-3,5-dicumyl)benzotriazole, Songsorb 2340, Light Stabilizer 234, BLS 234, 2-(Benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, Jinwei 234, 2-[2-Hydroxy-3,5-di-(1,1-dimethylbenzyl)]-2H-benzotriazole, UVA 234, Milestab 234PD, Chiguard 234, Chisorb 234, Adeka Stab LA 24, UV Absorber 234, UL 234, Riasorb UV 234, 83931-73-1, 88653-64-9, 134531-15-0, 147614-31-1, 796971-91-0, 1357193-39-5, 1651840-20-8, 535753_ALDRICH, EINECS 274-570-6, CID112412, ZINC02504746, NCGC00164197-01, 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)-, 134531-15-0, 147614-31-1, 796971-91-0, 83931-73-1, 88653-64-9, UV-234, Tinuvin 234, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, 2-(2’-Hydroxy-3’,5’-bis(α,α-dimethylbenzyl)phenyl)benzotriazole, BLS-234, Linsorb UV-234, Omnistab UV-234, Eversorb 76, Milestab 234, UV 234, BLS234, UV-234, Eusorb UV-900, UV absorber-234, Absorber UV-234, UV Abosorber 234, UV Absorber UV-234, Ultraviolet absorbent UV-234, 2-(2H-benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, 2-(2h-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)-pheno, 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1 phenylethyl)phenol, 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, 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, MFCD00134705, 2-(benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, UV Absorber 234, C30H29N3O, 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)phenol, 2-(2H-Benzotriazol-2-yl)-4,6-bis(2-phenyl-2-propanyl)phenol [ACD/IUPAC Name], 2-(2H-Benzotriazol-2-yl)-4,6-bis(2-phenyl-2-propanyl)phenol [German] [ACD/IUPAC Name], 2-(2H-Benzotriazol-2-yl)-4,6-bis(2-phényl-2-propanyl)phénol [French] [ACD/IUPAC Name], 2-(2h-benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, 274-570-6 [EINECS], 70321-86-7 [RN], MFCD00134705 [MDL number], Phenol, 2-(2H-1,2,3-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)- [ACD/Index Name], PHENOL, 2-(2H-BENZOTRIAZOL-2-YL)-4,6-BIS(1-METHYL-1-PHENYLETHYL)-, UV-234, [70321-86-7], 134531-15-0 [RN], 147614-31-1 [RN], 2- -4,6-bis phenol, 2-(2-benzotriazolyl)-4,6-bis(1-methyl-1-phenylethyl)phenol, 2-(2-benzotriazolyl)-4,6-bis(2-phenylpropan-2-yl)phenol, 2-(2H -Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, 2-(2H -Benzotriazol-2-yl)-4,6-bis(1-methyl-l-phenylethyl)phenol, 2-(2H-Benzo[d][1,2,3]triazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, 2-(2H-BENZOTRIAZOL-2-YL)-4,6- BIS(1-METHYL-1- PHENYLETHYL) PHENOL, 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)-phenol, 2-(2-Hydroxy-3,5-dicumyl)benzotriazole, 2-(2-Hydroxy-3,5-di-α-cumylphenyl)-2H -benzotriazole, 2-(3′,5′-Bis(1-methyl-1-phenylethyl)-2′-hydroxyphenyl)benzotriazole, 2-(3′,5′-Bis(α,α-dimethylbenzyl)-2′-hydroxyphenyl)benzotriazole, 2-(benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenyl-ethyl)phenol, 2-(benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, 2-[2-Hydroxy-3,5-bis(α,α-dimethylbenzyl)phenyl]-2H -benzotriazole, 2-[2-Hydroxy-3,5-di(1,1-dimethylbenzyl)phenyl]2H-benzotriazole, 4,6-bis(1-methyl-1-phenylethyl)-2-(2-hydrobenzotriazol-2-yl)phenol, 70321-86-1 [RN], 83931-73-1 [RN], 88653-64-9 [RN], BENZOTRIAZOLE BT, EINECS 274-570-6, NCGC00164197-01, Ultraviolet absorbent UV-234, UV234, 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, 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1 phenylethyl)phenol, UV absorber-234, 2-(2H-benzotriazol-2-yl)-4,6-bis(2-phenylpropan-2-yl)phenol, 3,3'-(3,3'-dimethoxybiphenyl-4,4'-diyl)bis(2,5-diphenyl-2H-tetrazol-3-ium) dichloride - 1H-benzotriazole (1:1), UV Abosorber 234, UV 234, Hydroxy-Bis(Dimethyl-benzyl)-Phenyl-Benzotriazole

Thasorb UV-234 is a benzotriazole ultraviolet absorber, in order to slow down the aging process of plastics, extend the service life of plastics and in the processing of a plastic additive, belongs to the stabilizing effect of the additive.
Thasorb UV-234 is a class of products second only to hindered amines in the amount of light stabilizers, mostly used in polyolefin, the amount of UV absorbers in polyolefin accounts for about 50% to 60%.

Thasorb UV-234 is used for polypropylene outdoor products, you must add the product and antioxidant.
Thasorb UV-234 has almost no effect on the color of plastic products, and the light stability is better than benzophenone.

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, where loss of UVA is not tolerated as well as for polyvinylchloride, styrene homo- and copolymers.

Thasorb UV-234 is a high molecular weight UV absorber of the hydroxypheny benzotriazole class, showing outstanding light stability to a variety of polymers during its use.
Thasorb UV-234 is an excellent light stabilizer used in PE, pp, polyester and coatings.

Thasorb UV-234 is a low volatile, benzotriazole type, ultraviolet light absorber (UVA), which is highly effective for polymers being processed at high temperatures.
Thasorb UV-234 is a strong ultraviolet absorber.

Thasorb UV-234 is very effective for polymers that need to be processed at high temperature and no UV absorption loss allowed, such as polycarbonate, polyester, polyacetal, polyamide, polyphenylene sulfide, Polyphenylene oxide, aromatic copolymer, thermoplastic polyimide, polyimide fiber, and polyvinyl chloride, styrene monopolymer and copolymers.

Thasorb UV-234 has low volatility at high temperatures and good compatibility with polymers.
Thasorb UV-234 is highly effective for polymers usually processed at high temperatures, such as films and fiber.
Thasorb UV-234 is a white to light yellow crystalline powder.

Thasorb UV-234 is characterized by its high thermal stability and excellent UV absorption capability, particularly in the UV-B range.
Thasorb UV-234 has a melting point of about 137-141°C.
Thasorb UV-234 is highly soluble in many organic solvents but insoluble in water.

These physical properties make Thasorb UV-234 an ideal UV absorber for a variety of applications.
Thasorb 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.

Thasorb UV-234 is a high molecular weight hydroxyphenyl benzotriazole UV absorber with excellent photostability for a large number of polymers.
Thasorb UV-234 is especially suitable for large surface objects which can protect polymers and pigments from UV radiation, add and save their performance and appearance.

Thasorb UV-234 is a high-performance hydroxyphenyl-benzotriazole UV absorber (UVA).
Thasorb UV-234 is a benzotriazole-class UV absorber.
Thasorb UV-234 is a kind of light-yellow powder with a chemical formula of C30H29N3O and a molecular weight of 447.6.

Thasorb UV-234 is a kind of light-yellow powder.
Thasorb UV-234 has high compatibility, good thermal stability, and low volatility with polyolefins.
Thasorb UV-234 strongly absorbs 300 to 400 nm UV Light which belongs to ultraviolent rays.

Thasorb UV-234 is an excellent light stabilizer for polyethylene (PE), polyvinyl chloride (PVC), and polypropylene (PP).
Thasorb UV-234 is a kind of light-yellow powder.
Thasorb UV-234 has high compatibility, good thermal stability, and low volatility with polyolefins.

Thasorb UV-234 strongly absorbs 300 to 400 nm UV Light which belongs to ultraviolent rays.
Thasorb UV-234 is a high-molecular-weight ultraviolet light absorber (UVA) from the hydroxyphenylbenzotriazole class that imparts excellent light stability to a wide range of polymers.

Thasorb UV-234 is a low-volatility benzotriazole UV light absorber and stabilizer.
Thasorb UV-234 is a benzotriazole UV absorber, providing high thermal stability, excellent photostability.
These combinations make Thasorb UV-234 suitable for high performance coatings, especially those exposed to high thermal or extreme environmental stress.

Thasorb UV-234 is a high-performance hydroxyphenyl-benzotriazole class UV absorber (UVA) used to protect polymers, coatings and other organic materials from UV-induced degradation (yellowing, loss of mechanical properties, discoloration).
Thasorb UV-234 is a low-volatility, phenolic benzotriazole that provides long-term protection especially in thermally processed polymers (polycarbonate, polyesters, PVC, polyamides, etc.).

Thasorb UV-234 features low volatility, exceptional light absorbing characteristics and good compatibility in various substrates, which makes the product especially suitable for applications characterized by high surface area, such as films and fiber.
Thasorb UV-234 protects organic polymers as well as pigments from UV light, improving and preserving the technical and visual performance of such applications.

Thasorb UV-234 is used only with adequate ventilation.
Store Thasorb UV-234 in a cool, dry, well-ventilated area away from incompatible materials.
Thasorb UV-234 is a light stabilizer belonging to the benzotriazole class of UVAs.

USES and APPLICATIONS of THASORB UV-234:
Thasorb UV-234 is suitable for polycarbonates, polyesters, polyvinyl chloride, polyoxymethylene, polyamide, etc.
Thasorb UV-234 features low volatility, exceptional light absorption properties, and good compatibility with a variety of substrates.
This makes Thasorb UV-234 particularly suitable for high-surface area applications such as films and fibers.

Thasorb 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 fibers, as well as polyvinyl chloride, styrene homo- and copolymers.

Thasorb UV-234 is highly effective for polymers usually processed at high temperatures such as poly-carbonate, polyesters, polyacetal, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane and polyurethane fibers, where loss of UVA is not tolerated as well as for polyvinylchloride, styrene homo- and copolymers.

Applications of Thasorb UV-234 include molded articles, films, sheets and fibers.
Thasorb UV-234 absorbs UVA radiation and harmlessly dissipates the absorbed energy (non-radiative decay), protecting polymers, coatings and organic colorants from photodegradation (yellowing, loss of mechanical properties and discoloration).

Thasorb UV-234 is formulated for low volatility and good thermal stability so it can be used in thermally processed polymers.
Polymers use of Thasorb UV-234: Polycarbonate (PC), polyesters (PET/PBT), polyamides (PA), polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polyoxymethylene (POM), PMMA and other engineering plastics — for parts that require long-term UV durability.

Thasorb UV-234 is used coatings, adhesives, inks, fibers & films: Used as an additive or in masterbatches to protect colorants and binders.
Typical product forms: Thasorb UV-234 is used neat powder, pre-dispersed concentrates, masterbatches for easier incorporation and handling.
Thasorb UV-234 exhibits high absorbance in the 300–400nm region and minimal absorbance in the visible region (> 400 nm) of the spectrum.

Thasorb UV-234 is especially suited for polycarbonates, polyesters and other polymers usually processed at high temperatures.
In polyolefins, Thasorb UV-234 has low volatility at high temperatures and high resistance to thermal degradation for polyolefin compounding and molding applications.

Thasorb UV-234 is especially suitable for applications of high surface area, such as films and fibers.
Thasorb UV-234 can be used alone or in combination with other additives (HALS, antioxidants).
Use levels of Thasorb UV-234 range between 0.15 and 0.60 %, depending on the substrate and performance requirements of the final application.

Thasorb 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.
Thasorb UV-234 is a high molecular weight ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting good light stability to a variety of polymers.

Applications of Thasorb UV-234 include molded articles, films, sheets and fibers.
Thasorb UV-234 also finds use in automotive OEM and industrial high-temperature baking coatings, powder- and coil coatings, overprint varnishes over metal, board, paper, laminates, adhesives and sealants.

For outdoor applications, Thasorb UV-234 needs to be combined with a hindered amine light stabilizer (HALS) such as LS-123 (for acid-catalyzed systems) or LS-292 (for 2K PUR).
Thasorb UV-234 is especially suited for polymers processed at high temperatures, such as polycarbonates, polyesters, and others.

Thasorb 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.

Applications of Thasorb UV-234 include molded articles, films, sheets and fibers.
In polyolefins, Thasorb UV-234 has low volatility at high temperatures and high resistance to thermal degradation for compounding and molding applications.

Thasorb UV-234 is ideal for applications of high surface area, such as films and fibers.
Thasorb UV-234 is also useful in the light stabilization of solvent-based coatings and powder coatings.
Thasorb UV-234 is especially suited for polycarbonates and polyesters.

Thasorb UV-234 protects the polymers from UV radiation helping to preserve the original appearance and physical integrity.
Thasorb UV-234 is a benzotriazole ultraviolet light absorber (UVA) designed to impart excellent light stability to a variety of polymers.

Thasorb UV-234 provides low volatility, exceptional light absorbing characteristics and good compatibility in various substrates making it particularly suitable for applications characterized by high surface area, such as films and fibers.
Thasorb UV-234 is mainly used for polycarbonate, polyesters, polyacetal, polyamides, polyphenylene sulfide, polyphenylene oxide, aromatic copolymers, thermoplastic polyurethane, and polyurethane fibers.

Thasorb UV-234 protects materials from ultraviolet radiation.
Thasorb UV-234 is UV absorber for PP, SBS, footwear, SEBS, acetal, acrylic, PET, PMMA, PBT, PC, recommended for thin section and fiber applications, suitable for food contact applications.

Thasorb UV-234 is excellent light stabilizer for PE, PP, polyester and coatings.
Thasorb UV-234 can also be used in mould, film, boards and fiber.

Thasorb UV-234 (2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol) 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 of Thasorb UV-234 include molded articles, films, sheets and fibers.
Use levels of Thasorb UV-234 (2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol) range between 0.15 and 0.60 %, depending on substrate and performance requirements of the final application.

Thasorb UV-234 can be used alone or in combination with other functional additives such as antioxidants (hindered phenols, phosphites) and light stabilizers, where often a synergistic performance is observed.
Extensive performance data of Thasorb UV-234 alone or in combination with other additives are available in many of the substrates listed above.

Thasorb UV-234 can be used in combination with HALS to achieve superior durability, exhibiting discoloration, gloss reduction, cracking, and delamination.
Uses of Thasorb UV-234: Low volatile benzotriazole UV light absorber and stabilizer.

Thasorb UV-234 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.

Thasorb UV-234 is used in: Engineering Plastics: Polycarbonate, PET, polyoxymethylene, polyamide, PPS, PPO.
Flexible Polymers: Thasorb UV-234 is used TPU, polyurethane fibers.
Commodity Plastics: Thasorb UV-234 is used PVC, styrene and copolymers.

Forms use of Thasorb UV-234: Molded articles, films, sheets, fibers.
High Surface Area Applications of Thasorb UV-234: Especially effective in films and fibers.
Recommended Dosage: Thasorb UV-234: 0.15% to 0.60% (general use)

Typical applications/uses of Thasorb UV-234: UV-stabilization of polycarbonates, PET, polyesters, PVC, polyamides, polyacetal, polyurethanes, elastomers and other engineering plastics.

Thasorb UV-234 is used additive in coatings, adhesives, sealants, inks, fibers, films, molded parts to improve weathering and colour stability.
Thasorb UV-234 is used in masterbatches and additive packages for long-term outdoor exposure applications (automotive, construction, consumer goods).
Applications of Thasorb UV-234 include molded articles, films, sheets and fibers.

-Plastic Industry uses of Thasorb UV-234:
Thasorb UV-234 is frequently used in the plastics industry to extend the lifespan and durability of plastic products.
Thasorb UV-234 protects polymers from degradation caused by UV rays, which is crucial for outdoor applications.
Thasorb UV-234 is used in polyethylene, polypropylene, PVC, and other plastics to preserve their color and material stability.

-Automotive Industry uses of Thasorb UV-234:
In the automotive industry, Thasorb UV-234 is used to protect car parts and coatings from UV-induced damage.
Thasorb UV-234helps maintain the color and finish of vehicles and prevents cracking and discoloration.
This improves the aesthetics and longevity of vehicle components.

-Coating Industry uses of Thasorb UV-234:
In the coatings industry, Thasorb UV-234 is used in paints, varnishes, and coatings.
Thasorb UV-234 protects coated surfaces from UV-induced damage such as cracking, discoloration, and degradation.
Adding Thasorb UV-234 helps maintain and extend the aesthetic and protective properties of coatings, which is particularly important for outdoor applications.

-Textile Industry uses of Thasorb UV-234:
Thasorb UV-234 is also used in the textile industry to protect fabrics from UV radiation.
Thasorb UV-234 helps preserve the colors of textiles and extend their lifespan.

Thasorb UV-234 can be integrated into various textile treatments to produce UV-protective clothing and other UV-resistant textile products.
Thasorb UV-234 is a versatile and indispensable raw material used in numerous industries.

From the plastics and automotive industries to coatings and textiles, the outstanding UV absorption properties of Thasorb UV-234 provide comprehensive protection and contribute to improving the durability and quality of products.
With its high thermal stability and broad applicability, Thasorb UV-234 will continue to play a key role in various technologies and industrial processes in the future.

FEATURES & USES of THASORB UV-234:
Thasorb UV-234 is a light yellow powder with a melting point of 135-145 °C.
Thasorb UV-234 is soluble in chloroform, dichloromethane, benzene, ethyl acetate and other organic solvents, slightly soluble in alcohols, insoluble in water.
Thasorb UV-234 is used benzotriazole ultraviolet absorber, suitable for polycarbonate, polyvinyl chloride, polyoxymethylene, polyamide, polyester, coating, etc.

Thasorb UV-234 is an excellent light stabilizer for PE, PP, polyesters and coatings.
Thasorb UV-234 is used low-volatility benzotriazole UV absorbers and stabilizers.

Thasorb UV-234 is a highly effective chemical additive widely used in many industries due to its excellent properties.
Thasorb UV-234 offers optimal protection against the harmful effects of ultraviolet radiation and helps extend the lifespan of numerous products.

FEATURES of THASORB UV-234:
Thasorb UV-234 is a strong ultraviolet absorber.
Thasorb UV-234 has low volatility at high temperatures and good compatibility with polymers.
Thasorb UV-234 is highly effective for polymers usually processed at high temperatures, such as films and fiber.

ADVANTAGES of THASORB UV-234:
*Low Volatility:
Thasorb UV-234 is suitable for high-temperature polymer processing.

*Strong UV Absorption:
Thasorb UV-234 protects polymers and pigments from UV degradation.

*High Compatibility:
Thasorb UV-234 works well with a wide range of polymers and additives.

*Durability:
Thasorb UV-234 enhances resistance to discoloration, gloss loss, cracking, and delamination.

*Thermal & Photostability:
Ideal for demanding applications of Thasorb UV-234 like automotive, outdoor films, and fibers.

STORAGE of THASORB UV-234:
Store Thasorb UV-234 in a cool, dry, well-ventilated area.
*Shelf life of Thasorb UV-234:
24 months from manufacture date if stored properly.

*Handling:
Use Thasorb UV-234 protective equipment.

CHEMICAL PROPERTIES & BEHAVIOUR of THASORB UV-234:
*Functional class:
Hydroxyphenyl benzotriazole UV absorber (UVA)

*Mode of action:
Thasorb UV-234 absorbs UVA radiation and dissipates the energy as non-damaging heat, protecting polymer chains and colourants from photodegradation.
The phenolic group and benzotriazole core enable strong UVA absorption and photostability.

*Stability:
Thermally stable under normal processing temperatures for many engineering plastics; chemically stable in neutral environments but phenolic nature means Thasorb UV-234 may be reactive under strong oxidizing or strongly acidic/basic extremes.

*Reactivity:
Thasorb UV-234 has low chemical reactivity in typical use; avoid strong oxidizers.

*Partitioning / environmental behavior:
Thasorb UV-234 has low water solubility and a tendency to partition into organic phases; potential for bioaccumulation has been raised in environmental assessments for phenolic benzotriazoles.

ADVANTAGES of THASORB UV-234:
*Strong absorption of ultraviolet radiation in the 300-400 nm region.
*Low color contribution.
*Low volatility during high processing temperatures.
*Good extraction resistance.

GUIDELINES FOR USE of THASORB UV-234:
Typical recommended use levels of Thasorb UV-234 in plastics range between 0.1% and 0.6%, and in coatings between 1% and 3.0% based on total solids.
Combinations Thasorb UV-234 with other light stabilizers and benzoates often show enhanced performance in both plastics and coatings.
The exact formulation to be used is dependent on the substrate, performance requirements, and other factors, and should be determined by the user based on testing to simulate actual conditions of use.

CHARACTERIZATION of THASORB UV-234:
Thasorb 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.

FEATURES of THASORB UV-234:
*Low Volatile Benzotriazole UV Absorber;
*high molecular weight.

PERFORMANCE CHARACTERISTICS & BENEFITS of THASORB UV-234:
High UVA protection (prevents polymer chain scission and color change).
Low volatility & good thermal stability — suitable for high-temperature processing and extrusion/molding.
Good compatibility with many polymers; performs well at low dosages (economical).
Synergy: Often used with hindered amine light stabilizers (HALS) and antioxidants for extended weathering performance.

FEATURES/BENEFITS of THASORB UV-234:
Thasorb UV-234 features low volatility, exceptional light absorbing characteristics and good compatibility in various substrates.
This makes Thasorb UV-234 especially suitable for applications characterized by high surface area, such as films and fiber.
Thasorb UV-234 protects organic polymers as well as pigments from UV light, improving and preserving the technical and visual performance of such applications.

CHEMICAL PROPERTIES & MODE OF ACTION of THASORB UV-234:
Chemical class / functional group:
Hydroxyphenyl-benzotriazole (benzotriazole UV absorber).

*Mode of action:
Strong UVA absorption (typically 300–400 nm range) and dissipation of excitation energy as heat; the phenolic group and benzotriazole core give photostability and efficient UVA screening.

*Stability / reactivity:
Thermally stable under normal polymer processing conditions; chemically stable in neutral environments.
Avoid strong oxidizing conditions or extremely acidic/basic extremes that may degrade the phenolic structure.

CHARACTERIZATION of THASORB UV-234:
Thasorb UV-234 (2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol) is a high molecular weight ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class, imparting excellent light stability to a variety of polymers.

Thasorb UV-234 can be used alone or in combination with other functional additives such as antioxidants (hindered phenols, phosphites) and light stabilizers, where often a synergistic performance is observed.
Thasorb UV-234 is a low volatile benzotriazole UV light absorber and stabilizer.

Uses of Thasorb UV-234:
Low volatile benzotriazole UV light absorber and stabilizer.
Thasorb UV-234 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.
Thasorb UV-234 is also highly effective for polyvinylchloride, styrene homo- and copolymers.

BENEFITS / PERFORMANCE CHARACTERISTICS of THASORB UV-234:
High UV absorption in UVA range — Thasorb UV-234 is excellent protection against long-term sunlight exposure.
Low volatility and good thermal stability — Thasorb UV-234 is suitable for polymer processing at elevated temperatures.
Good compatibility with many polymers (often used in combination with HALS and antioxidants for synergistic performance).
Effective at low dosages (economical).
Thasorb UV-234 improves product lifetime and appearance retention.

PRACTICAL ADVICE — FORMULATION & HANDLING TIPS of THASORB UV-234:
Thasorb UV-234 is used at recommended concentrations (typical 0.15–0.6% by weight for many polymers) and test for bleed, extraction and discoloration in your specific system.

Thasorb UV-234 is combine with hindered amine light stabilizers (HALS) and antioxidants for synergistic long-term protection.
Pre-disperse or use masterbatch formulations to improve dispersion in polymers and reduce dust exposure during handling.
Confirm compatibility and thermal stability with your processing window (conduct melt-stability tests for high-temperature processes).

FUNCTIONS of THASORB UV-234:
*Light Stabilizer,
*UV Absorber

FEATURES of THASORB UV-234:
*Crack Resistance,
*Good Compatibility,
*Good Gloss Retention,
*Good Heat Stability,
*Good Light Stability,
*High Durability,
*High Performance,
*Low Volatility

PHYSICAL and CHEMICAL PROPERTIES of THASORB UV-234:
Common name / trade names: THASORB UV-234, UV-234, Tinuvin® 234 (and other vendor trade names)
Preferred IUPAC / systematic name: 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol (common formulation/structural variant).
CAS number: 70321-86-7 (this is the widely used CAS for UV-234).
EC (EINECS/ELINCS) number: 274-570-6.
Molecular formula: commonly reported as C₃₀H₂₉N₃O.
Molar mass / molecular weight: ~ 447.6–448 g•mol⁻¹.
PubChem / ChemSpider / ECHA records: registered and catalogued (see references)
Appearance: Light yellow to off-white solid (powder).
Physical state: Solid (powder/granulate).
Melting point / range: ~137–145 °C (typical ranges reported ~139–143 °C).
Density: ≈ 1.2–1.22 g•cm⁻³ (some sources report ~1.22 g/cm³ at 20 °C).

Solubility: Practically insoluble in water (very low water solubility, < 5 µg•L⁻¹ reported); soluble in common organic solvents (chloroform, dichloromethane, toluene, ethyl acetate, etc.).
Vapor pressure / volatility: Very low — low volatility (suitable for high-temperature polymer processing).
Appearance in formulations: usually supplied as a solid powder or as a pre-dispersed masterbatch.
Typical use level in polymers / coatings: ~0.15–0.6 wt% (depends on substrate and performance needs).
Molecular Weight, g/mol 447.6
Appearance Slightly yellow powder
Specific Gravity @20°C, g/cm3 1.22
Melting Range, °C 137-141
Flash Point, °C >150
Appearance: Slightly yellow powder

Melting Range: 137.0-141.0°C
Volatiles: ≤0.30%
CBNumber:CB8280129
Molecular Formula:C30H29N3O
Molecular Weight:447.57
MDL Number:MFCD00134705
MOL File:70321-86-7.moL
Appearance: Light yellow to off-white powder (fine solid).
Physical state: Solid (powder/granules).

Melting point / range: ~137–143 °C (typical literature/TDS ranges ~138–143 °C).
Density: approx. 1.12–1.22 g•cm⁻³ (vendor/predicted values vary).
Solubility: Practically insoluble in water (water solubility reported <0.04 ppm or effectively insoluble); soluble in common organic solvents (chloroform, dichloromethane, toluene, ethyl acetate, acetone, etc.).
Vapor pressure: Very low — low volatility (suitable for high-temperature polymer processing).
Thermal behavior / volatility: Good thermal stability; low volatility (recommended for melt-processing).
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
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
CAS DataBase Reference: 70321-86-7(CAS DataBase Reference)
Indirect Additives used in Food Contact Substances: 2-(2H-BENZOTRIAZOL-2-YL)-4,6-BIS(1-METHYL-1-PHENYLETHYL)PHENOL
FDA UNII: 9B1ZX3NU45
EPA Substance Registry System: Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)- (70321-86-7)
UNSPSC Code: 41116107
NACRES: NA.24
Product Name: 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol

CAS No.: 70321-86-7
Molecular Formula: C30H29N3O
InChIKeys: InChIKey=OLFNXLXEGXRUOI-UHFFFAOYSA-N
Molecular Weight: 447.57
Exact Mass: 447.57
EC Number: 274-570-6
UNII: 9B1ZX3NU45
DSSTox ID: DTXSID2028985
HScode: 29339900
PSA: 50.9
XLogP3: 9.21

Appearance: powder
Density: 1.1±0.1 g/cm3
Melting Point: 139-143 °C(lit.)
Boiling Point: 589.3±60.0 °C at 760 mmHg
Flash Point: 383 °F(lit.)
Refractive Index: 1.619
Water Solubility: H2O: insoluble , <0.04 ppm at 20 ºC
Typical Use Level: ~0.15–0.6 wt% in polymers (substrate-dependent)
Appearance: White powder
Purity: ≥99.0% by HPLC

Volatile Matter: ≤0.5%
Melting Point: 137.0-141°C
Ash Content: ≤0.1%
Transmittance: 460nm 97.0% min
500nm 98.0% min
CAS: 70321-86-7
EINECS: 274-570-6
InChI: InChI=1/C40H32N8O2.C6H5N3.2ClH/c1-49-37-27-31(23-25-35(37)47-43-39(29-15-7-3-8-16-29)41-45(47)33-19-11-5-12-20-33)32-24-26-36(38(28-32)50-2)48-44-40(30-17-9-4-10-18-30)42-46(48)34-21-13-6-14-22-34;1-2-4-6-5(3-1)7-9-8-6;;/h3-28H,1-2H3;1-4H,(H,7,8,9);2*1H/q+2;;;/p-2
Molecular Formula: C30H29N3O

Molar Mass: 447.57
Density: 1.12±0.1 g/cm3(Predicted)
Melting Point: 139-143°C(lit.)
Boiling Point: 589.3±60.0 °C(Predicted)
Flash Point: 383°F(lit.)
Water Solubility: insoluble, <0.04 ppm at 20 ºC
Solubility: H2O: <0.04ppm at 20°C, insoluble
Appearance: powder
Color: White to Off-White

pKa: 9?+-.0.10(Predicted)
Storage Condition: Refrigerator
Appearance: slightly yellow powder or granules
Melting Point: 137 – 141 °C
Flash Point: > 150°C
Solubility (20℃): Water < 0.01, MeoH < 0.1, EtoH 0.3, Acetone 2, CH2Cl2 15, Hexane 0.6
Physical and Chemical Properties:
Appearance: light yellow powder
Content: ≥99% (HPLC)

Melting Point: 137-141℃
Transmittance: 460nm≥98%, 500nm≥99%
Volatiles: ≤0.3%
Molecular Weight: 447.6 g/mol
XLogP3-AA: 8.6
Hydrogen Bond Donor Count: 1
Hydrogen Bond Acceptor Count: 3
Rotatable Bond Count: 5
Exact Mass: 447.231062557 Da
Monoisotopic Mass: 447.231062557 Da

Topological Polar Surface Area: 50.9 Å²
Heavy Atom Count: 34
Formal Charge: 0
Complexity: 652
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1

Compound Is Canonicalized: Yes
SMILES: CC(C)(c1ccccc1)c2cc(c(c(c2)n3nc4ccccc4n3)O)C(C)(C)c5ccccc5
StdInChI: 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
StdInChIKey: OLFNXLXEGXRUOI-UHFFFAOYSA-N
Molecular Formula: C30H29N3O
Molecular Weight: 447.57
EINECS: 274-570-6
MDL Number: MFCD00134705
Properties:
Appearance: Light yellow powder

Melting Point: 139.5-141°C
CAS: 70321-86-7
MF: C30H29N3O
MW: 447.57
EINECS: 274-570-6
Product Categories: Polymer Additives; Polymer Science; Polymer Additives; Polymer Science; Stabilizers
Mol File: 70321-86-7.mol
Melting Point: 139-143 °C(lit.)
Boiling Point: 589.3±60.0 °C(Predicted)
Density: 1.12±0.1 g/cm3(Predicted)
Fp: 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
Water Solubility: insoluble, <0.04 ppm at 20 ºC
InChIKey: OLFNXLXEGXRUOI-UHFFFAOYSA-N
CAS DataBase Reference: 70321-86-7(CAS DataBase Reference)
EPA Substance Registry System: Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)- (70321-86-7)

FIRST AID MEASURES of THASORB UV-234:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of THASORB UV-234:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.

FIRE FIGHTING MEASURES of THASORB UV-234:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of THASORB UV-234:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of THASORB UV-234:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of THASORB UV-234:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available