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ChemicaL name: Methylene bis[(3-(2-benzotriazolyl)-2-hydroxy-5-tert-octylphenyl]
CAS NO: 103597-45-1
Structure:

Specification:
Appearance: light yellow powder
Melting point: 193-198
Assay: 99% Min
Volatile: 0.5%max
Ash: 0.1%maxIntroduction:
Transmittance:  @460nm≥97%   @500nm≥98%

UV-360 is a very low volatile benzotriazole UV Absorber used in a variety of polymers and resin compositions. Its applications include acrylic resins, polyalkylene terephthalates, polycarbonates, modified polyhenylene ether or sulfide compounds, polyamides, polyacetals, polyolefins, styrenics, elastomers and high performance plastics.
Storage: UV-360 should be stored in a closed system,and be kept in a dry and dark place without any
light exposure.
Package: Net 25kg carton with inner plastic bag.

Product name: Sodium Hydrosulphite
Other name: Sodium disulfite
CAS NO: 7775-14-6
Molecular formula: Na2O4S2
Molecular weight: 174.1071
Structural formula：
 

Chemical name: 2-(2'-Hydroxy-5'-methylphenyl)-benzotriazole
CAS NO:2440-22-4

Introduction:
UV-P is a benzotriazole type UV absorber. It has a high absorption in the wavelength
of 270~340nm. It is also efficient for the light stabilization of polyvinyl chloride, unsaturated
polyurethane, polystyrene, coatings and lacquers.
Specification:
Appearance: white to yellowish crystal powder
Melting Point: 128~131℃
Content (HPLC) : 99% Min.
Transmittance: 440nm≥98%   500nm≥99%
Ash: 0.1% Max.
Volatiles: 0.5% Max.

Property:
Odorless, don’t bring smell to polymers.
Insensitive to metal ion
Non-flammable, non-explosion, non-toxic, harmless to health.
Very high photo stability for its strong ability to absorb light especially in UV region (270~340nm)
Very stable to heat and can be used in plastic which require high processing temperature.

Chemical Name：2,2'-(1, 4-phenylene) di4h-3, 1-benzoxazine-4-one
Molecular formula：C22H12N2O4
Molecular weight：368.34
Structural formula：
 
CAS NO：18600-59-4
Content：more than 99%
Melting point：310-315℃
Ash content：less than 0.1%
Volatile matter：less than 0.3%

Chemical name：Hexadecyl 3,5-bis-tert-butyl-hydroxybenzoate
Molecular formula：C31H54O3
Molecular weight：474.8
Structural formula：
 
CAS NO：67845-93-6
Melting point：59.0-66.0℃
Content (GC) ：≥98.5%
Volatile matter：≤0.5%
Ash content：≤0.2%
Appearance：White powder
Purpose：This product is an excellent light stabilizer, low volatility, small coloring, good chemical stability, acid and alkali resistance. Suitable for PP and PE polyolefin plastics, the general dosage is 0.25 ~ 0.1%. This product can be used alone or with benzophenone UV stabilizer or phosphite ester antioxidant, showing good synergistic effect.

Chemical Name: 2-(4,6-Diphenyl-1,3,5-triazin-2-yl)-5-[(hexyl)oxy]-phenol
Molecular Formula C25H27N3O2
Molecular Weight 425.25
CAS NO.: 147315-50-2Applications: Triazine type UV light absorber has very low volatility , but has good compatibility with other additives. As the ultraviolet absorption agent , it is available to acrylate , PVC , polyester and polyethylene high capability polymer etc.
Specification:
Appearance Lightly yellow powder
Assay ≥ 99%
Melting point 148-150°C
Loss on drying ≤ 0.1%
Ash ≤ 0.05%
PSD＞4000um ≤ 1.0%
Transmittance(2%Toluene solution) 450nm≥ 88%, 500nm≥ 98.5%
Solubility :soluble in chloroform, diphenylmethane, methylbenzene, ethyl acetate, slightly soluble in hexyl alcohol, ethanol.
Storage and transportation :
The chemical stability is good. It can be stored and transported according to the general chemical matter regulation.
Packing: 25kg cartons or durm(PE plastic inside)

Chemical name : 2-Hydroxy-4-n-octoxybenzophenone
Introduction : UV- 531 is an ultraviolet light absorber (UVA) of the benzophenone class, imparting good light stability for plastics and other organic polymers. Due to its highly effective broad UV absorption properties and excellent polymer compatibility, UV- 531 offers maximum polymer protection and low color contribution, retards yellowing and loss of physical properties.
CAS NO : 1843-05-6
 Formula : C21H26O3
Structure :

Specification:
Appearance : light yellow powder
Melting Range : 47-49 °C
Assay : 99% Min.
Volatile Matter : < 0.5% Max.
Transmissirity: 450nm≥ 95 %，500nm≥ 97%

Chemical name : 2- (2'-Hydroxy-5'-tert-octylphenyl)benzotriazole 
Formula : C20H25N3O
Molecular Weight : 323
CAS NO : 3147-75-9
Specification:
Appearance : white powder
Assay: 99%Min
Melting Range : 103-105 °C
Transmittance:  @440nm≥ 97 %；@500nm≥ 98%
Ash: 0.1%Max
Loss on drying: 0.5%Max
Introduction : UV-329 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers. UV-329 is an effective light stabilizer for a variety of plastics and other organic substrates.
Solubility At 20 °C (g/100ml solvent)

Chemical name：2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol
Molecular formula：C22H29N3O
Molecular weight：351.5
Structural formula：
 
CAS NO：21615-48-6
Content：≥99%
Melting point：80-83℃
Dry weight loss：≤0.5%
Ash content：≤0.1%
Appearance：White - light yellow powder
Solubility：Dissolved in benzene, toluene, styrene, cyclohexane, methyl methacrylate, ethyl acetate, ketone and other organic solvents.
Transmittance：460nm≥97%; 500nm≥98%
Features and Uses：Uv-328 is an efficient UV absorber with a maximum UV absorption peak of 345nm. Its photostability is similar to that of UV-326 and UV-327. However, it has a good miscibility with resins, low thermal volatilization, and high scrubber resistance. The general dosage is about 1%. It also has excellent light stabilization effect in various coatings.
Packing：20 or 25 kg cardboard drum or carton packing.

Important points about UV absorbers:
UV absorbers are compounds added to materials to protect them from the harmful effects of ultraviolet (UV) radiation. Ultraviolet radiation from the sun can cause serious damage to a variety of materials, including plastics, paints, textiles, and even human skin. The primary function of UV absorbers is to absorb UV rays and dissipate them as low levels of heat, thereby preventing degradation or other harmful effects of UV radiation.

Chemical name: 2-(2'-Hydroxy-3'-tert-5'-methylphenyl)-5-chlorobenzotriazole

CAS NO:  3896-11-5
Introduction:
UV-326 is a benzotriazole type UV absorber. It has a high absorption in the wavelength
of 290~400nm. It is also efficient for the light stabilization of polyvinyl chloride, unsaturated
polyurethane, polystyrene, polycarbonate, coatings and lacquers.

Specification:
.Appearance: slightly yellowish powder
.Melting Point: 137~142℃
.Content (HPLC) : 99% Min.
.Transmittance: 460nm≥97%   500nm≥98%
.Ash: 0.1% Max.
.Loss on drying: 0.5% Max.

Chemical name: 2-[2'-hydroxy-3',5'-bis(-dimethyl benzyl)-phenyl]benzotriazole
Molecular Formula ： C30H29N3O
CAS NO.:70321-86-7
Application ： UV-234 is a kind of yellowish powder, melting point is 139.5-141 ℃ , it is a fine light stabilizer, suitable for PP, TPE , hard PVC, POM, PA, PC, PBT/PET, PMMA,etc.
Specification ： 
Appearance: light yellow powder 
Melting Point: ≥ 139.5-141 ℃ 
Volatile Matter: ≤ 0.5% 
Ash Content: ≤ 0.05% 
Purity: ≥ 99% 
Transmissirity: 460nm≥ 97 %   500nm≥ 98% 
Packing: 25kg paper drum or carton

- High-quality Orthanilic Acid for pharmaceutical applications
- Manufactured by a factory integrating production and trade
- Exceptional physical and chemical properties
- Reliable supply chain and competitive pricing
- Compliant with industry standards and regulations

- High-purity Oleic Acid for pharmaceutical applications
- Produced in an integrated factory ensuring quality and consistency
- Superior physical and chemical properties
- Reliable supply chain and competitive pricing

Chemical name: poly {[6 - [(4 methyl butyl,1,3,3) amino]] - 1,3,5 - triazine - 2, 4 - double [(,2,6,6, 2 - methyl - piperidine) of amino] - 1, 6 - adipic hold [,2,6,6 (2 - methyl - 4 - piperidine) of amino]}
Molecular formula: [C35H64N8]n
CAS NO. : 70624-18-9

Specification
Appearance: white powder or granules
Volatile content: ≤1. 0%
Ash content: ≤0. 1%
Transmittance: @425 nm: 95Min  ,@500 nm: 97% Min
Application: LS-944 is used in polyolefin plastics (such as PP, PE), olefin copolymers (such as EVA, propylene and rubber mixture, etc.), and in crosslinked polyethylene, it can show its good efficacy. In addition to polyolefin plastics, it can also be used in polyphenylene ether compound (PPE), polyformaldehyde, polyamide, polyurethane, soft and hard PVC and PVC blends, styrene, rubber and adhesive also have a good effect. Ls-944 is compatible with uv absorbers. Ls-944 can be used in systems that require low volatilization and a small amount of migration. It is particularly suitable for the antioxidant effect of ls-944 in thin films and fibers, as well as the long-term thermal stability effect on polymers.
Storage : LS-944 is stable , storage to avoid high temperature and humidity.
Package:  25KG carton with pallet

Chemical name: bis (2,2,6, 6-tetramethyll-4-piperidinyl) sebacate
Molecular formula: C28H52O4N2
Molecular weight: 48
CAS NO. : 52829-07-9
Specification:
Appearance: white or yellowish crystalline powder
Content: ≥ 99%
Volatile content: ≤ 0.5%
Melting point: 81-86 ℃
Ash content: ≤ 0.1%
Transmittance: 425nm≥98%, 500nm≥99%
Application: light stabilizer 770 is suitable for polypropylene, high-density polyethylene, polyurethane, polystyrene, ABS resin, etc. Its light stabilizing effect is better than the commonly used light stabilizing agent at present
Packing: 25kg PE bags or carton packing.