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.
We are professional uv absorber manufacture in china. Have a good sales in china and international market. With good quanlity and competitive price. Please contact us directly for more information.King_success@126.Com
Chemical name: 2-hydroxy-4-methoxybenzophenone ú¿benzophenone-3ú¬
Cas no : 131-57-7
Molecular formula: c14h12o3
Structural formula :
Property :
Yellowish crystalline powder, freely soluble in most organic solvents, not soluble in water.
Specification :
Content í²99.9 %
Melting point : 62~65ípc
Loss on drying(55ía2ípc) ín0.3%
Content of ash: ín0.1%
Light transmittance(290-400nm)í² 93 %
Characteristics and uses:
This product is a high-efficienct uv radiation absorbing agent, capable of effectively absorbing uv radiation of 290-400 nm wavelength , but it almost does not absorb visible light, particularly applicable to light-colored transparent products. It is well stable to light and heat, not decomposable below 200ípc, applicable to paint and various plastic products, particular effective to polyvinyl chloirde, polystyrene, polyurethane, acrylic resin, light-colored transparent furniture, as well as to cosmetics , with the dosage of 0.1-0.5%.
20kg/25kg carton or drum. Or according to customer's require.
We have many years produce experience of semicarbazide hcl. Have a competitive price in china. Please contact me directly for more information.King_success@126.Com
Synonym : semicarbazide hydrochloride
Cas no :563-41-7
Property :
Soluble in water, not soluble in anhydrous ethanol and ether.
Specification :
Appearance: white crystal
Content í² 99%
Boiling point 173~177ípc
Water solubility: qualified
Use :
This product is a raw material for pharmaceutical industry, used in the manufacture of nitrofuran etc. Also used as reagent for assaying ketone and aldehyde, as reagent for chromatogram analysis, and solvent for separating hormone and essential oil.
Package : high-pressure cardboard drums lined with plastic membrane bags with the capacity of 25kg.
