Description

Uv Absorber 384 is a high-performance, benzotriazole-based ultraviolet light stabilizer widely used to protect polymers and coatings from photodegradation. Its primary value lies in its exceptional ability to absorb harmful UV radiation, thereby significantly extending the service life and maintaining the aesthetic properties of finished products. This additive is essential for manufacturers in the plastics, coatings, and synthetic fiber industries seeking to enhance the durability and color stability of their materials under prolonged sunlight exposure.

Application

• Stabilizer for engineering plastics such as polycarbonate (PC), polyamide (PA), and polyester (PBT, PET).
• UV protection for industrial and automotive coatings, including clearcoats and pigmented systems.
• Additive in synthetic fibers and textiles to prevent strength loss and color fading.
• Stabilizer for adhesives, sealants, and other polymer-based formulations.
• Protection of packaging materials from UV-induced degradation.
• Use in agricultural films to improve weatherability and longevity.

Basic Information

Product Name	Uv Absorber 384
CAS No.	127519-17-9
Molecular Formula	C22H29N3O
Molecular Weight	351.49 g/mol
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)-; UV-384; BLS 1711; Tinuvin 384; Lowilite 55; Everstab 384; UV Absorber 384
EINECS	Contact for details

Quality Control

Our Uv Absorber 384 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for assay and purity, to ensure it meets precise specifications and delivers consistent performance. A Certificate of Analysis (COA) detailing all quality parameters is provided with each shipment to guarantee traceability and compliance.

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 product is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product performance.

Specification

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

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