UV-P(Benzotriazole UV Absorber )

 UV ABSORBER UV-P CAS NO.:2440-22-4

UV-P is an ultraviolet light absorber (UVA) of the hydroxyphenol benzotriazole class, imparting good light stability to a wide variety of polymers during its use.

 

1. Item name:

2-(2-benzotriazole)-4-methylphenol, 2-(2-hydroxy-5-methylphenyl)-2H-benzotriazole);

2-(2-hydroxy-5-methylphenyl)benzotriazole

 

2. Specifications:

CAS No: 2440-22-4

EC No: 219-470-5

Molecular formula: C13H11N3O

Molecular weight: 225

IUPAC Name: 2-(benzotriazol-2-yl)-4-methylphenol

Structural formula：

 

3. Properties:

Appearance: White crystalline powder

Assay: 99.0% min.

Melting point: 128.0 ~ 133.0 °C

Ash content: 0.1% max.

Light transmittance

 440 (nm): 97.0% min.

 500 (nm): 98.0% min.

 Melting Range 128-132°C

Flashpoint 205°C

Specific Gravity (20°C) 1.38 g/cm3

Vapor Pressure (20°C) 1.5 E-4 Pa

Solubility (20°C) % w/w

Water < 0.01

Acetone 3

Benzene 7

Chloroform 13

Cyclohexane 1

Ethyl acetate 3.5

n-Hexane 0.8

Methanol 0.2

Methylene chloride 16

Volatility (pure substance; TGA, heating rate 20°C/min in air)

Weight loss (%) Temperature (°C)

1.0 153

2.0 170

5.0 190

 

4. Application:

UV-P provides ultraviolet protection in a wide variety of polymers including styrene homo- and

copolymers, engineering plastics such as polyesters and acrylic resins, polyvinyl chloride, and

other halogen containing polymers and copolymers (e.g. vinylidenes), acetals and cellulose

esters. Elastomers, adhesives, polycarbonates, polyurethanes, and some cellulose esters and

epoxy materials also benefit from the use of UV-P

 

Features/ Benefits

UV-P features a strong absorption of ultraviolet radiation in the 300-400 nm region. It also has a high degree of photostability over long periods of light exposure. The high absorbance combined with photostability and the ability to release absorbed energy in non sensitizing ways make UV-P an effective stabilizer against the effects of ultraviolet light. UV-P has Food Contact Approvals in rigid and flexible PVC applications for food, consumer care products and pharmaceuticals, preserving the package contents from the detrimental effects of light.

 

 

5.Storage:

Avoid sun, high light, moisture, and light stabilizers containing sulfur or halogen elements. It needs to be stored in sealed, dry and away from light.