Description

Uv-1577 is a high-performance ultraviolet (UV) light absorber and stabilizer, identified by CAS No. 147315-50-2. This compound is essential for protecting polymers and coatings from the degrading effects of UV radiation, thereby significantly extending product lifespan and maintaining material integrity. It is a critical additive for manufacturers in the plastics, paints, and advanced materials industries who require reliable photostabilization for their high-value products.

Application

• As a primary UV stabilizer in engineering plastics such as polycarbonate (PC), polyamide (PA), and polyester (PBT, PET).
• Enhancing the weatherability and color retention of automotive coatings, exterior paints, and industrial finishes.
• Protecting packaging materials and films from UV-induced degradation to preserve contents.
• Formulation additive in adhesives and sealants to prevent loss of performance due to sunlight exposure.
• Use in advanced composite materials to maintain structural properties under outdoor conditions.
• Stabilizing synthetic fibers and textiles against photoyellowing and strength loss.

Basic Information

Product Name	Uv-1577
CAS No.	147315-50-2
Molecular Formula	C₂₀H₂₅N₃O₅
Molecular Weight	387.43 g/mol
Synonyms	2-(2H-Benzotriazol-2-yl)-4,6-di-tert-pentylphenol; 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol; UV-1577; Bumetrizole; Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)-; Light stabilizer 1577; Benzotriazole UV absorber 1577
EINECS	Contact for details

Quality Control

Our Uv-1577 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including HPLC for assay and related substances, to meet exacting industry specifications. A Certificate of Analysis (COA) detailing all quality parameters is provided with every shipment.

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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
Melting Point	138°C - 142°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Transmittance (425nm)	≥ 95%
Transmittance (500nm)	≥ 97%

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