M Chemical GUARD DOG™ UV234 Light Absorber, Benzotriazole Derivative

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M Chemical GUARD DOG™ UV234 Light Absorber, Benzotriazole Derivative
Categories:	Other Engineering Material; Additive/Filler for Polymer
Material Notes:	GUARD DOG™ UV234 UV absorber is a low volatile benzotriazole based UV absorber which is highly effective in polymers that are processed at high temperature (decomposition temperature > 350°C). Applications: Extremely effective in PP, SBS, footwear, SEBS, acetal, acrylic, PET, PMMA, PBT, PC and is recommended for thin section and fiber applications suitable for food contact applications. Performance Benefits: Strong absorption of UV radiation in the 300 - 400 nm range. The absorption maxima are 302 nm and 343 nm Low initial color and low volatility during high processing temperatures and has good extraction resistance Typical Properties: Free flowing pale yellow powder Solubility (g/100g @ 25°C): Acetone - 2, Benzene - 10, CHCl3 - 35, MeCl - 34, MEK - 13, Toluene 20
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Physical Properties	Metric	English	Comments

Specific Gravity	1.22 g/cc @Temperature 20.0 °C	1.22 g/cc @Temperature 68.0 °F
Molecular Weight	447.58 g/mol	447.58 g/mol
Vapor Pressure	2.00e-15 bar	1.50e-12 torr

Thermal Properties	Metric	English	Comments
Melting Point	137 - 141 °C	279 - 286 °F
Flash Point	>= 150 °C	>= 302 °F	Ignition

Optical Properties	Metric	English	Comments
UV Transmittance	>= 95 % @Thickness 0.460 mm	>= 95 % @Thickness 0.0181 in
	>= 97 % @Thickness 0.500 mm	>= 97 % @Thickness 0.0197 in

Descriptive Properties
CAS Number	70321-86-7
Molecular Formula	C₃₀H₂₉N₃O₃
Name	2-[2-Hydroxy-3, 5-di(1, 1-dimethylenezyl)-phenyl] 2H-benzotriazole
Recommended Dosage	0.15 - 0.60%		depending upon the substrate and performance requirements

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PMCHEM906 / 135145

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