Description

2-[2-Hydroxy-3-[(1,3,4,5,6,7-Hexahydro-1,3-Dioxo-2H-Isoindole-2-Yl)Methyl]-5-Methylphenyl]-2H-Benzotriazole CAS NO 59129-18-9 is a high-performance, hindered amine light stabilizer (HALS) derivative that offers exceptional protection against UV degradation. This compound is critical for enhancing the longevity and durability of polymers and coatings exposed to harsh environmental conditions. It is primarily needed by manufacturers in the plastics, automotive, and industrial coatings sectors seeking to prevent color fading, surface cracking, and loss of mechanical properties.

Application

• As a light stabilizer in polyolefins (PP, PE) for automotive parts, outdoor furniture, and agricultural films.
• As a UV absorber in industrial and automotive coatings to prevent gloss loss and chalking.
• For the stabilization of engineering plastics like polyamides (PA) and polycarbonates (PC) in electrical components and consumer goods.
• In adhesives and sealants to maintain performance integrity under sunlight exposure.
• As an additive in synthetic fibers and textiles to improve colorfastness and material strength.
• For the protection of packaging materials from UV-induced degradation, extending shelf life.

Basic Information

Product Name	2-[2-Hydroxy-3-[(1,3,4,5,6,7-Hexahydro-1,3-Dioxo-2H-Isoindole-2-Yl)Methyl]-5-Methylphenyl]-2H-Benzotriazole
CAS No.	59129-18-9
Molecular Formula	C22H20N4O3
Molecular Weight	388.42 g/mol
Synonyms	2-(2-Hydroxy-3-(1,3-dioxo-1,3,4,5,6,7-hexahydro-2H-isoindol-2-ylmethyl)-5-methylphenyl)-2H-benzotriazole; UV-3035; 2H-Benzotriazole, 2-[2-hydroxy-3-[(1,3,4,5,6,7-hexahydro-1,3-dioxo-2H-isoindol-2-yl)methyl]-5-methylphenyl]-; Light stabilizer 3035; 2-(2'-Hydroxy-3'-(1,3-dioxo-1,3,4,5,6,7-hexahydro-2H-isoindol-2-ylmethyl)-5'-methylphenyl)benzotriazole; Benzotriazole UV absorber 3035; 2-(2-Hydroxy-3-(1,3-dioxo-1,3,4,5,6,7-hexahydroisoindolin-2-ylmethyl)-5-methylphenyl)-2H-benzotriazole
EINECS	Contact for details

Quality Control

Our production of 2-[2-Hydroxy-3-[(1,3,4,5,6,7-Hexahydro-1,3-Dioxo-2H-Isoindole-2-Yl)Methyl]-5-Methylphenyl]-2H-Benzotriazole adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing, including HPLC and spectroscopic methods, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing assay, impurity profile, and physical characteristics are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque containers until use.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.