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Uv Absorber Tancals 531

Supplier From China
Mar-14-13

Appearance pale yellow crystalline powder
Melting point(¡æ) 46.5 ~ 49
Ash content£¨%£© ¨q0.10
Volatile loss (%) ¨q0.50
Transmittance(440nm) (%) ¨r79.0
Transmittance(460nm) (%) ¨r89.0
Assay£¨%£© ¨r99.0

Tancals 531 is a benzophenone light stabilizer, capable of absorbing the uv
Radiation of 240-340nm wavelength. It is of light color, non-toxicity, good
Compatibility, small mobility and easy processing. It is widely applied to
Pe, pvc, pp, ps, pc organic glass, pp fiber, ethylene-vinyl acetate etc.
Moreover, it has very good light-stability on drying phenol aldehyde, varnish of
Alcohol, polyurethane, acrylate, etc.

20kg/pc


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Uv absorber 531

Chemical name: 2-hydroxy-4-octyloxy benzophenone (benzophenone-12)
Cas no: 1843-05-6
Molecular formula: c21h26o3
Structural formula:


Property : ó·yellowish crystals;
ó·yellowish fine powder
Freely soluble in benzene, n-hexane, acetone, slightly soluble in ethanol, very slightly soluble in ethane dichloride.

Specification
Contentú¦í²99 %
Melting point: 47~49 ípc
Ash: ín0.1 %
Light transmittance: (450nm)í²90%
(500nm)í²95%
Characteristics and uses:
This product is a light stabilizer with good performance, capable of absorbing the uv radiation of 240-340 nm wavelength with the characteristics of light color, nontoxic , good compatibility, small mobility, easy processing etc. It can protect the polymer to its maximum extent, helps to reduce the color. It can also delay the yellowing and obstacle the loss of its physical function. It is widely applied to pe, pvc, pp, ps, pc organic glass, polypropylene fiber, ethylene-vinyl acetate etc. Moreover, it has very good light-stability effect on drying phenol aldehyde, varnish of alcohol and acname, polyurethane, acrylate, expoxnamee etc. Its dosage is 0.1%-0.5%.




Package: packed in cardboard drums lined with plastic bags with the net capacity of 20 kg per bag.

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