UV Absorber 531

UV Absorber 531, CAS No.: 1843-05-6

UV Absorber 531 is a benzophenone-type ultraviolet absorber chemically known as 2-Hydroxy-4-(octyloxy)benzophenone. It is also known as Octabenzone, Benzophenone-12, UV-531, 2-Hydroxy-4-n-octyloxybenzophenone and 2-Benzoyl-5-(octyloxy)phenol. 

Product Chemical Properties

Chemical Name: 2-Hydroxy-4-(octyloxy)benzophenone

CAS No.: 1843-05-6

Molecular Formula: C₂₁H₂₆O₃

Molecular Weight: 326.43 g/mol

EC No.: 217-421-2

IUPAC Name: (2-Hydroxy-4-octoxyphenyl)(phenyl)methanone

Main Synonyms: UV Absorber 531, UV-531, Octabenzone, Benzophenone-12, 2-Hydroxy-4-n-octyloxybenzophenone, 2-Benzoyl-5-(octyloxy)phenol, Cyasorb UV 531, Spectra-Sorb UV 531, Chimassorb 81

Chemical Type: Benzophenone UV absorber

Product Technical Specification

Appearance: Light yellow crystalline powder or flakes

Purity: ≥99% (HPLC)

Melting Point: 47 - 49℃

Volatile Matter: ≤0.5%    

Ash Content: ≤0.1%    

Transmittance: ≥95% at 440nm, ≥97% at 500nm

Applications of UV Absorber 531

1. This product is a high-performance ultraviolet absorber capable of effectively absorbing UV light in the 270–340 nm range.

2. It features low color, low toxicity, good compatibility, low migration, and ease of processing.

3. It is suitable for use with polyethylene, polypropylene, polystyrene, AS resin, ABS resin, polycarbonate, PVC, PVDC, polyester, and polyamide.

Packaging

20kg carton or cardboard drum.

Production Capacity

8000MT/year.

Storage Requirements

Store in a cool, dry and well-ventilated area.

Keep the container tightly closed when not in use.

Protect from moisture, excessive heat and direct sunlight.

UV Absorber 531 Bulk Supply from China

Hosea Chem® supplies UV Absorber 531, CAS 1843-05-6, for plastic stabilization, polymer protection, coatings, adhesives, sealants, masterbatch and other industrial applications.

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