Semicarbaxide hydrochloride
Synonym : Semicarbazide hydrochloride
CAS NO :563-41-7
Property :soluble in water, not soluble in anhydrous ethanol and ether.
Specification :
Appearance: White crystal
Content í¦ 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.
Precaution : Kept at normal temperature and stored in dry and ventilated warehouses. Kept away from water and moisture. Kept away from rain and sunlight in transportation. Be careful in loading and unloading. Stored and transported according to regulations for general drugs.
Ultraviolet absorber UV-531
Chemical Name: 2-Hydroxy-4-Octyloxy Benzophenone (Benzophenone-12)
CAS NO: 1843-05-6
Molecular Formula: C21H26O3
Structural Formula:
Property : Yellowish crystals;
Yellowish fine powder
Freely soluble in benzene, n-hexane, acetone, slightly soluble in ethanol, very slightly soluble in ethane dichloride.
Specification
Contentú¦í¦99 %
Melting Point: 47~49 ípC
Ash: í_0.1 %
Light Transmittance: (450nm)í¦90%
(500nm)í¦95%.
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.
Precaution: No toxicity kept away from moisture and fire in transportation; stored and transported as common chemicals with relatively good stability.
Ultraviolet absorber UV-9
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 í¦99 %
Melting Point : 62~65ípC
Loss on drying(55í+2ípC) í_0.3%
Content of Ash: í_0.1%
Light Transmittance(290-400nm)í¦ 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%.
Package : packed in cardboard drums lined with plastic bags with the net capacity of 25 kg per bag.
Precaution :No toxicity; kept away from moisture and fire in transportation; stored and transported as common chemicals with good stability.
2-Chloronicotinic acid
Chemical Name:2-Chloro-3-Pyridinecarboxylic acid
CAS NO: 2942-59-8
Chemical Formula: C6H4ClNO2
Structural Formula:
Specification :
Appearance:White crystal
Content :í¦ 99%
Melting Point:178-180íµ
TLC: Pass
Loss on Dryingí_0.4%
Ash í_0.3%
Use : As an important pharmaceutical and pesticide intermediate, it can be used in the synthesis of various antibiotics, drugs for cardiovascular disease, as well as bactericide, pesticide, herbicide etc.
Packing: 25kg in plastic nag lined carton.
Precaution: Sealed, in cool and airiness place, far away from fire.
UV absorber 531
Chemical Name: 2-Hydroxy-4-Octyloxy Benzophenone (Benzophenone-12)
CAS NO: 1843-05-6
Molecular Formula: C21H26O3
Structural Formula:
Property : ¢ÙYellowish crystals;
¢ÚYellowish fine powder
Freely soluble in benzene, n-hexane, acetone, slightly soluble in ethanol, very slightly soluble in ethane dichloride.
Specification
Content£º¡Ý99 %
Melting Point: 47~49 ¡ãC
Ash: ¡Ü0.1 %
Light Transmittance: (450nm)¡Ý90%
(500nm)¡Ý95%
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.
Precaution: No toxicity kept away from moisture and fire in transportation; stored and transported as common chemicals with relatively good stability.
25KG Carton or drum.