China Largest factory sales Octabenzone/UV-531/BP-12 CAS 1843-05-6 CAS NO.1843-05-6

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Octabenzone Basic information Description Characterization Applications Physical properties Uses Features/benefits Analytic Laboratory Methods Guidelines for use Handling & Safety References Product Name: Octabenzone Synonyms: [2-Hhydroxy-4-(octyloxy)phenyl]phenylmethanone;2-HYDROXY-4-N-OCTOXYBENZOPHENONE;2-HYDROXY-4-N-OCTYLOXYBENZOPHENONE;2-HYDROXY-4-(OCTYLOXY)BENZOPHENONE;2-HYDROXY-4-(OCTYLOXYL)-BENZOPHENONE;CHIMASSORB 81;BENZOPHENONE-12;Octabenzone CAS: 1843-05-6 MF: C21H26O3 MW: 326.43 EINECS: 217-421-2 Product Categories: Polymer Additives;Polymer Science;Additives for Plastic;Aromatic Benzophenones & Derivatives (substituted);Organics;Polymer Additives;Industrial/Fine Chemicals;Polymer Science;Stabilizers Mol File: 1843-05-6.mol   Octabenzone Chemical Properties Melting point  47-49 °C(lit.) Boiling point  424.46°C (rough estimate) density  1.160g/cm3 refractive index  1.6000 (estimate) Fp  102℃ storage temp.  Sealed in dry,Room Temperature solubility  Chloroform (Slightly), Methanol (Slightly, Sonicated) pka 7.59±0.35(Predicted) form  Solid color  Off-White to Light Yellow Low-Melting Specific Gravity 1.160 Merck  14,6742 BRN  1915198 InChIKey QUAMTGJKVDWJEQ-UHFFFAOYSA-N CAS DataBase Reference 1843-05-6(CAS DataBase Reference) NIST Chemistry Reference Octabenzone(1843-05-6) EPA Substance Registry System 2-Hydroxy-4-octyloxybenzophenone (1843-05-6)   Safety Information Hazard Codes  Xi,N Risk Statements  36/37/38-50/53-43 Safety Statements  26-36-61-60-36/37 RIDADR  UN 3077 9/PG 3 WGK Germany  1 RTECS  DJ1595000 TSCA  Yes HS Code  29145090 Hazardous Substances Data 1843-05-6(Hazardous Substances Data) Toxicity LD50 oral in rat: > 10gm/kg MSDS Information Provider Language SigmaAldrich English ALFA English   Octabenzone Usage And Synthesis Description Octabenzone is a UV absorber/screener. It is used to protect polymers (e.g., polyethylene, polypropylene, polyvinylchloride) against damage by UV light. Colorless crystals; Light yellow powder. Stable under recommended storage conditions. Characterization UV Absorber 531 is an ultraviolet light absorber (UVA) of the benzophenone class, imparting good light stability when used in combination with a hindered amine light stabilizer (HALS) of the Chimassorb, Tinuvin® or Uvinul® range. It shows good compatibility with polyolefins and plasticized PVC. Applications The main application of UV Absorber 531 is in combination with a HALS the light stabilization of low density and linear low density polyethylene as well as ethylene-vinyl acetate copolymers for agricultural films. It can be used as well as a UV barrier to protect the contents of packages for both industrial and consumer applications. Also, in combination with HALS, UV Absorber 531 can be used in high density polyethylene molded articles, e. g. in crates. UV Absorber 531 also protects a number of other polymers against degradation caused by light exposure such as plasticized PVC and rubbers. UV Absorber 531 can be used in combination with antioxidants, phosphites and other light stabilizers. Physical properties Uses Adsorbents and absorbents; Paint additives and coating additives not described by other categories Processing aids, not otherwise listed Air Care Products Building/Construction Materials not covered elsewhere Fabric, Textile, and Leather Products not covered elsewhere Furniture and Furnishings not covered elsewhere Paints and Coatings Plastic and Rubber Products not covered elsewhere Features/benefits UV Absorber 531 is particularly suitable for thick films, typically > 100 μm and thick sections. The low vapor pressure of UV Absorber 531 prevents losses during processing. Low migration rates reduce the risk of blooming. Analytic Laboratory Methods Migration of photo stabilizers from plastics was studied in model elution expt where the plastics were placed at different temp 20 and 45 degree in different solvents, e.g. H2O, acetic acid,  sunflower oil, heptane, and the amt of photostabilizer eluted was determined by spectrophotometry and by gas chromatography. The elution of 2-hydroxy-4-n-octyloxybenzophenone depended on the type of plastic. Elution was low in polystyrene and high in polyolefins, polyethylene. Food contamination from these plastic additives is discussed. Guidelines for use Handling & Safety In accordance with good industrial practice, handle with care and avoid unnecessary personal contact. Avoid continuous or repetitive breathing of dust. Use only with adequate ventilation. Protect skin. Avoid dust formation and ignition sources. For more detailed information please refer to the material safety data sheet. References 1. # 2. # Description Octabenzone appears as light yellow/yellowish crystals/fine powder and is odourless and freely soluble in benzene, n-hexane, and acetone; slightly soluble in ethanol; and very slightly soluble in ethane dichloride. Octabenzone is a light stabiliser with good performance, capable of absorbing the UV radiation of 240–340 nm wavelength with the characteristics of light colour, non-toxicity, good compatibility, small mobility, easy processing, etc. Octabenzone protects the polymer to its maximum extent and helps to reduce its colour. It can also delay the yellowing and impede the loss of its physical function. Industrial applications of octabenzone is very extensive and applied to PE, PVC, PP, PS, PC, organic glass, polypropylene fibre, ethylene-vinyl acetate, etc. Also, octabenzone has very good light-stability effect on drying phenol aldehyde, varnish of alcohol and acname, polyurethane, acrylate, expoxnamee, etc. The major uses include UV stabiliser, for example, polyethylene and polypropylene fibres. Chemical Properties Light yellow powder Uses To stabilize polyethylene against deterioration by ultraviolet light. Uses HOBPs are UV absorbers for insulating plastics, which can be incorporated with active layers to increase the stabilization of organic solar cells (OSCs). It may be incorporated in parylene C films to enhance the light stability, which can be potentially used as a moisture transfer membrane for electronic boards and photovoltaics. Preparation Preparation by reaction of n-octyl chloride with 2,4-di-hydroxybenzophenone, in the presence of a mixture of sodium carbonate, triethylamine and potassium iodide in refluxing butanol for 15 h (90%); in the presence of potassium carbonate in cyclohexanone at 145° for 5 h (66%); in the presence of potassium hydroxide and antimony triiodide in diethylene glycol at 150° for 1 h (93%); in the presence of sodium bicarbonate and potassium iodide in 1-methylpyrrolidone for 2 h at 150° (96%). General Description 2-Hydroxy-4-(octyloxy)benzophenone (HOBP) is a UV based absorber that has 2-hydroxybenzophenone as a functional group. It can be used to enhance the light fastness of polymers using UV absorbers with sulfur and phosphorus compounds.   Octabenzone Preparation Products And Raw materials Raw materials Ethanol-->Hydrochloric acid-->Resorcinol-->2,4-Dihydroxybenzophenone-->1-Chlorooctane-->Disodium 2,2'-dihydroxy-4,4'-dimethoxy-5,5'-disulfobenzophenone

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Leader Biochemical Group is a large leader incorporated industry manufacturers and suppliers of advanced refined raw materials From the year of 1996 when our factory was put into production to year of 2020, our group has successively invested in more than 52 factories with shares and subordinates.We focus on manufacture Pharm & chemicals, functional active ingredients, nutritional Ingredients, health care products, cosmetics, pharmaceutical and refined feed, oil, natural plant ingredients industries to provide top quality of GMP standards products.All the invested factories' product lines cover API and intermediates, vitamins, amino acids, plant extracts, daily chemical products, cosmetics raw materials, nutrition and health care products, food additives, feed additives, essential oil products, fine chemical products and agricultural chemical raw materials And flavors and fragrances. Especially in the field of vitamins, amino acids, pharmaceutical raw materials and cosmetic raw materials, we have more than 20 years of production and sales experience. All products meet the requirements of high international export standards and have been recognized by customers all over the world. Our manufacture basement & R&D center located in National Aerospace Economic & Technical Development Zone Xi`an Shaanxi China. Now not only relying on self-cultivation and development as well as maintains good cooperative relations with many famous research institutes and universities in China. Now, we have closely cooperation with Shanghai Institute of Organic Chemistry of Chinese Academy of Science, Beijing Institute of Material Medical of Chinese Academy of Medical Science, China Pharmaceutical University, Zhejiang University. Closely cooperation with them not only integrating Science and technology resources, but also increasing the R&D speed and improving our R&D power. Offering Powerful Tech supporting Platform for group development. Keep serve the manufacture and the market as the R&D central task, focus on the technical research.  Now there are 3 technology R & D platforms including biological extract, microorganism fermentation and chemical synthesis, and can independently research and develop kinds of difficult APIs and pharmaceutical intermediates. With the strong support of China State Institute of Pharmaceutical Industry (hereinafter short for CSIPI), earlier known as Shanghai Institute of Pharmaceutical Industry (SIPI), we have unique advantages in the R & D and industrialization of high-grade, precision and advanced products.  Now our Group technical force is abundant, existing staff more that 1000 people, senior professional and technical staff accounted for more than 50% of the total number of employees, including 15 PhD research and development personnel, 5 master′ S degree in technical and management personnel 9 people. We have advanced equipment like fermentation equipment and technology also extraction, isolation, purification, synthesis with rich production experience and strict quality control system, According to the GMP required, quickly transforming the R&D results to industrial production in time, it is our advantages and our products are exported to North and South America, Europe, Middle East, Africa, and other five continents and scale the forefront in the nation, won good international reputation.  We believe only good quality can bring good cooperation, quality is our key spirit during our production, we are warmly welcome clients and partner from all over the world contact us for everlasting cooperation, Leader will be your strong, sincere and reliable partner in China.

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Octabenzone Basic information Description Characterization Applications Physical properties Uses Features/benefits Analytic Laboratory Methods Guidelines for use Handling & Safety References Product Name: Octabenzone Synonyms: [2-Hhydroxy-4-(octyloxy)phenyl]phenylmethanone;2-HYDROXY-4-N-OCTOXYBENZOPHENONE;2-HYDROXY-4-N-OCTYLOXYBENZOPHENONE;2-HYDROXY-4-(OCTYLOXY)BENZOPHENONE;2-HYDROXY-4-(OCTYLOXYL)-BENZOPHENONE;CHIMASSORB 81;BENZOPHENONE-12;Octabenzone CAS: 1843-05-6 MF: C21H26O3 MW: 326.43 EINECS: 217-421-2 Product Categories: Polymer Additives;Polymer Science;Additives for Plastic;Aromatic Benzophenones & Derivatives (substituted);Organics;Polymer Additives;Industrial/Fine Chemicals;Polymer Science;Stabilizers Mol File: 1843-05-6.mol   Octabenzone Chemical Properties Melting point  47-49 °C(lit.) Boiling point  424.46°C (rough estimate) density  1.160g/cm3 refractive index  1.6000 (estimate) Fp  102℃ storage temp.  Sealed in dry,Room Temperature solubility  Chloroform (Slightly), Methanol (Slightly, Sonicated) pka 7.59±0.35(Predicted) form  Solid color  Off-White to Light Yellow Low-Melting Specific Gravity 1.160 Merck  14,6742 BRN  1915198 InChIKey QUAMTGJKVDWJEQ-UHFFFAOYSA-N CAS DataBase Reference 1843-05-6(CAS DataBase Reference) NIST Chemistry Reference Octabenzone(1843-05-6) EPA Substance Registry System 2-Hydroxy-4-octyloxybenzophenone (1843-05-6)   Safety Information Hazard Codes  Xi,N Risk Statements  36/37/38-50/53-43 Safety Statements  26-36-61-60-36/37 RIDADR  UN 3077 9/PG 3 WGK Germany  1 RTECS  DJ1595000 TSCA  Yes HS Code  29145090 Hazardous Substances Data 1843-05-6(Hazardous Substances Data) Toxicity LD50 oral in rat: > 10gm/kg MSDS Information Provider Language SigmaAldrich English ALFA English   Octabenzone Usage And Synthesis Description Octabenzone is a UV absorber/screener. It is used to protect polymers (e.g., polyethylene, polypropylene, polyvinylchloride) against damage by UV light. Colorless crystals; Light yellow powder. Stable under recommended storage conditions. Characterization UV Absorber 531 is an ultraviolet light absorber (UVA) of the benzophenone class, imparting good light stability when used in combination with a hindered amine light stabilizer (HALS) of the Chimassorb, Tinuvin® or Uvinul® range. It shows good compatibility with polyolefins and plasticized PVC. Applications The main application of UV Absorber 531 is in combination with a HALS the light stabilization of low density and linear low density polyethylene as well as ethylene-vinyl acetate copolymers for agricultural films. It can be used as well as a UV barrier to protect the contents of packages for both industrial and consumer applications. Also, in combination with HALS, UV Absorber 531 can be used in high density polyethylene molded articles, e. g. in crates. UV Absorber 531 also protects a number of other polymers against degradation caused by light exposure such as plasticized PVC and rubbers. UV Absorber 531 can be used in combination with antioxidants, phosphites and other light stabilizers. Physical properties Uses Adsorbents and absorbents; Paint additives and coating additives not described by other categories Processing aids, not otherwise listed Air Care Products Building/Construction Materials not covered elsewhere Fabric, Textile, and Leather Products not covered elsewhere Furniture and Furnishings not covered elsewhere Paints and Coatings Plastic and Rubber Products not covered elsewhere Features/benefits UV Absorber 531 is particularly suitable for thick films, typically > 100 μm and thick sections. The low vapor pressure of UV Absorber 531 prevents losses during processing. Low migration rates reduce the risk of blooming. Analytic Laboratory Methods Migration of photo stabilizers from plastics was studied in model elution expt where the plastics were placed at different temp 20 and 45 degree in different solvents, e.g. H2O, acetic acid,  sunflower oil, heptane, and the amt of photostabilizer eluted was determined by spectrophotometry and by gas chromatography. The elution of 2-hydroxy-4-n-octyloxybenzophenone depended on the type of plastic. Elution was low in polystyrene and high in polyolefins, polyethylene. Food contamination from these plastic additives is discussed. Guidelines for use Handling & Safety In accordance with good industrial practice, handle with care and avoid unnecessary personal contact. Avoid continuous or repetitive breathing of dust. Use only with adequate ventilation. Protect skin. Avoid dust formation and ignition sources. For more detailed information please refer to the material safety data sheet. References 1. # 2. # Description Octabenzone appears as light yellow/yellowish crystals/fine powder and is odourless and freely soluble in benzene, n-hexane, and acetone; slightly soluble in ethanol; and very slightly soluble in ethane dichloride. Octabenzone is a light stabiliser with good performance, capable of absorbing the UV radiation of 240–340 nm wavelength with the characteristics of light colour, non-toxicity, good compatibility, small mobility, easy processing, etc. Octabenzone protects the polymer to its maximum extent and helps to reduce its colour. It can also delay the yellowing and impede the loss of its physical function. Industrial applications of octabenzone is very extensive and applied to PE, PVC, PP, PS, PC, organic glass, polypropylene fibre, ethylene-vinyl acetate, etc. Also, octabenzone has very good light-stability effect on drying phenol aldehyde, varnish of alcohol and acname, polyurethane, acrylate, expoxnamee, etc. The major uses include UV stabiliser, for example, polyethylene and polypropylene fibres. Chemical Properties Light yellow powder Uses To stabilize polyethylene against deterioration by ultraviolet light. Uses HOBPs are UV absorbers for insulating plastics, which can be incorporated with active layers to increase the stabilization of organic solar cells (OSCs). It may be incorporated in parylene C films to enhance the light stability, which can be potentially used as a moisture transfer membrane for electronic boards and photovoltaics. Preparation Preparation by reaction of n-octyl chloride with 2,4-di-hydroxybenzophenone, in the presence of a mixture of sodium carbonate, triethylamine and potassium iodide in refluxing butanol for 15 h (90%); in the presence of potassium carbonate in cyclohexanone at 145° for 5 h (66%); in the presence of potassium hydroxide and antimony triiodide in diethylene glycol at 150° for 1 h (93%); in the presence of sodium bicarbonate and potassium iodide in 1-methylpyrrolidone for 2 h at 150° (96%). General Description 2-Hydroxy-4-(octyloxy)benzophenone (HOBP) is a UV based absorber that has 2-hydroxybenzophenone as a functional group. It can be used to enhance the light fastness of polymers using UV absorbers with sulfur and phosphorus compounds.   Octabenzone Preparation Products And Raw materials Raw materials Ethanol-->Hydrochloric acid-->Resorcinol-->2,4-Dihydroxybenzophenone-->1-Chlorooctane-->Disodium 2,2'-dihydroxy-4,4'-dimethoxy-5,5'-disulfobenzophenone