UV Absorber 531

UV Absorber 531

CAS Number: 1843-05-6
Molecular Formula: C₂₁H₂₆O₃

About UV Absorber 531

UV Absorber 531 is a benzophenone derivative that functions as an ultraviolet light absorber, protecting polymers and coatings from UV-induced degradation. It is characterized by its low volatility, resistance to migration, and ease of processing. This compound is effective in a variety of polymers, including polyethyl...

UV Absorber 531 Specifications

CAS Number

1843-05-6

Molecular Formula

C₂₁H₂₆O₃

Molecular Weight

326.43 g/mol

IUPAC Name

(2-Hydroxy-4-(octyloxy)phenyl)(phenyl)methanone or by 2-Hydroxy-4-octyloxybenzophenone

Canonical SMILES

CCCCCCCCOC1=CC(=CC(=C1)O)C(=O)C2=CC=CC=C2

InChI Key

1S/C21H26O3/c1-2-3-4-5-6-10-15-24-18-13-14-19(20(22)16-18)21(23)17-11-8-7-9-12-17/h7-9,11-14,16,22H,2-6,10,15H2,1H3

InChI

QUAMTGJKVDWJEQ-UHFFFAOYSA-N

EINECS Number

217-421-2

MDL Number

MFCD00003089

eClass

39021701

CAS Number

1843-05-6

Molecular Formula

C₂₁H₂₆O₃

Molecular Weight

326.43 g/mol

IUPAC Name

(2-Hydroxy-4-(octyloxy)phenyl)(phenyl)methanone or by 2-Hydroxy-4-octyloxybenzophenone

Canonical SMILES

CCCCCCCCOC1=CC(=CC(=C1)O)C(=O)C2=CC=CC=C2

InChI Key

1S/C21H26O3/c1-2-3-4-5-6-10-15-24-18-13-14-19(20(22)16-18)21(23)17-11-8-7-9-12-17/h7-9,11-14,16,22H,2-6,10,15H2,1H3

InChI

QUAMTGJKVDWJEQ-UHFFFAOYSA-N

EINECS Number

217-421-2

MDL Number

MFCD00003089

eClass

39021701

Appearance

Light yellow to colorless solid

Melting Point

47–49°C

Molecular Weight

326.43 g/mol

Solubility

Slightly soluble in water; soluble in organic solvents

Volatility

Low

Ash Content

≤0.1%

Transmittance

At 440 nm: ≥84% At 460 nm: ≥96% At 500 nm: ≥97%

Handling Precautions

Avoid dust formation and inhalation of vapors, mist, or gas. Prevent contact with skin and eyes. Use personal protective equipment, including gloves and protective eyewear. Ensure adequate ventilation in the workspace. Keep away from sources of ignition; the product can form explosive dust/air mixtures.

Storage Conditions

Store in a tightly closed container in a cool, dry, and well-ventilated area. Keep away from foodstuffs and incompatible materials. Protect from direct sunlight and moisture.

Firefighting Measures

Use dry chemical, carbon dioxide, alcohol-resistant foam, or water fog to extinguish fires.

Plastic

Enhances UV resistance in PE, PP, PVC, and PS products

Coatings

Improves weatherability in automotive paints, powder coatings, and polyurethane systems

Adhesives

Provides UV stability in various adhesive formulations

Rubber Products

Protects against UV degradation in rubber materials

Temperature

Store in a cool, dry place at temperatures below 25°C (77°F).

Environment

Keep away from moisture, direct sunlight, and sources of ignition.

Protection

Store in sealed, airtight containers to prevent contamination.

Compatibility

Avoid contact with strong oxidizing agents and acids.

Packaging Options

Available in 25 kg fiber drums, plastic-lined cartons, or as per customer requirements.

COA

UV Absorber 531 FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

Technical expert support

Rounded Top

Explore Industrial Chemicals Portfolio

CAS No 68082-96-2

Rosin Modified Phenolic resins

Category

Industrial Polymers

Sub-Category

Rosin-Based Resins & Binders

DescriptionOur Rosin Modified Phenolic Resins are high-performance complex polymers engineered through the cond...

CAS No 94581-16-5

Rosin Modified Maleic Resins

Category

Industrial Polymers

Sub-Category

Rosin-Based Resins & Binders

DescriptionOur Rosin Modified Maleic Resins are high-melting thermoplastic resins engineered through the precis...

CAS No 68002-19-7

Category

Industrial Polymers

Sub-Category

Metal Packaging & Can Coatings

DescriptionOur Phenol Formaldehyde Resins are high-performance thermosetting polymers specifically engineered f...

CAS No 25054-06-2

Category

Industrial Polymers

Sub-Category

Specialty Pigment Binders & Synthetic Resins

DescriptionOur Hard Ketone Aldehyde Resins are condensation polymers specifically developed for the ink, coatin...