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Chemical
name
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2-(2’-hydroxy-3’,5’-ditert-butyl)benzotriazole
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CAS
NO.
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3846-71-7
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M.W.
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323
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Introduction
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UV-320 is
a high molecular weight benzotriazole type UV absorber. It exhibits strong
absorbance in the 270-380 nm region and minimal absorbance in the visible
region of the spectrum.
UV-320
is particularly suitable for PVC, consumer care products and pharmaceuticals,
it can be also used for PET, PC, PA, ABS, resin, etc.
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Physical
properties
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1. Appearance: Slightly yellowish crystal powder
2. M.P.: 152-156 ℃
3. Assay: 99% min.
4. Transmittance: 460nm:
97% min.
500nm: 98% min.
5. Ash content: 0.3% max.
6. Volatile content: 0.5% max.
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Advantage
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1.
Very high photostability
for its strong ability to absorb light.
2.
Odorless, does not bring
smells to the polymers.
3.
Very stable to heat and
light, and can be used in plastics which require high processing
temperature.
4.
Low vapor pressure,
very little or no loss during processing.
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Applications
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Suggested 0.20-0.50%, depending on
substrate and performance.
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Toxicity
& Safety
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UV-320
can be safely handled without irritation caused to the skin.
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Package
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In 25 kg fiber drum with inner plastic
bag.
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Storage
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In a closed system and dry, dark place
without any light exposure.
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UV ABSORBER: UV-320
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Tel:86-571-8565-5918
86-571-8821-2363
Fax:86-571-8821-2215
Email:
sales@sunnychemical.com
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