China Biggest Factory Manufacturer Supply Antioxidant 245 CAS 36443-68-2

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Antioxidant 245 Basic information Characterization Physical Properties Applications Features/benefits Guidelines for use Uses Health & Safety Product Name: Antioxidant 245 Synonyms: (oxy-2,1-ethanediyl)ester;benzenepropanoicacid,3-(1,1-dimethylethyl)-4-hydroxy-5-methyl-,1,2-ethanediy;Benzenepropanoicacid,3-(1,1-dimethylethyl)-4-hydroxy-5-methyl-,1,2-ethanediylbis(oxy-2,1-ethanediyl)ester;Ethylenbis(oxyethylen)bis[3-(5-tert.-butyl-4-hydroxy-m-tolyl)propionat];triethylene glycol bis-3-(3-t-butyl-4-hydroxy-5-methylphenyl) propionate;3-tert-Butyl-4-hydroxy-5-methylphenylpropionic acid triethyleneglycol ester;Irganox 245(Ciba SC);Ciba Irganox 245 CAS: 36443-68-2 MF: C34H50O8 MW: 586.77 EINECS: 253-039-2 Product Categories: Organics Mol File: 36443-68-2.mol   Antioxidant 245 Chemical Properties Melting point  79-81oC Boiling point  602.88°C (rough estimate) density  1.0397 (rough estimate) refractive index  1.6000 (estimate) Fp  >150 °C storage temp.  Sealed in dry,Room Temperature solubility  Chloroform (Slightly), Methanol (Slightly) pka 11.44±0.25(Predicted) form  Solid color  White to Off-White CAS DataBase Reference 36443-68-2(CAS DataBase Reference) EPA Substance Registry System Benzenepropanoic acid, 3-(1,1-dimethylethyl)-4-hydroxy-5-methyl-, 1,2-ethanediylbis(oxy-2,1-ethanediyl) ester (36443-68-2)   Safety Information Risk Statements  52/53 Safety Statements  61 MSDS Information   Antioxidant 245 Usage And Synthesis Characterization Antioxidant 245 is a sterically hindered phenolic antioxidant particularly suitable for organic substrates. It protects the substrates against thermo-oxidative degradation during manufacturing, processing and end-use. Antioxidant 245 is odorless, of low volatility, has a good color stability and exhibits high extraction resistance. Physical Properties Applications Antioxidant 245 is effective in styrene polymers, particularly impact modified polystyrenes, ABS, MBS, SB and SBR-latices as well as in POM homo- and copolymers. It is also very useful for the stabilization of polyurethanes, polyamides, thermoplastic polyesters, PVC and other polymers. In addition to imparting thermostability to the finished polymer Antioxidant 245 is effective as chain stopper during PVC polymerization. Features/benefits Antioxidant 245 can be used in combination with other additives such as costabilizers (e.g. thioesters, phosphites, phosphonites, lactones), light stabilizers, and other functional stabilizers. The effectiveness of the blends of Antioxidant 245 with IRGAFOS 168 (Irganox B-blends) is noteworthy. Guidelines for use Already 0.05 – 0.1 % of Antioxidant 245 provides long-term thermal stability tothe polymer. Concentrations up to 1.0 % can be used depending on the substrate and the requirements of the end application. Uses Antioxidant 245 is an ethylenebis (oxyethylene) bis-(3-(5-tert-butyl-4-hydroxy-m-tolyl)-propionate). It is an antioxidant for processing and long-term thermal stabilization. It has low volatility, good color stability and is odorless. Exhibits high extraction resistance. Antioxidant 245 protects the substrates against thermo-oxidative degradation during manufacturing, processing and end use. It is compatible with styrene polymers including polystyrenes, ABS, MBS, SB and SBR as well as POM homo-and copolymers. Also compatible with polyurethanes, polyamides, thermoplastic polyesters, PVC and other polymers. It is effective as chain stopper during PVC polymerization. Its recommended dosage level is 0.05-0.1% for long-term thermal stability. Concentrations up to 1.0% can be used depending on the substrate and the requirements of the end application. Health & Safety Antioxidant 245 exhibits a very low order of oral toxicity and does not presentany abnormal problems in its handling or general use. Detailed information on handling and any precautions to be observed in theuse of the product(s) described in this leaflet can be found in our relevanthealth and safety information sheet. Uses Triethylene Glycol Bis(3- tert- butyl- 4- hydroxy- 5- methylphenyl) propionate is used as a polymer antioxidant stabilizer in adhesives and polymers for food contact. Generally functions as an antioxidant in the chemistry of plastics. Safety Profile Questionable carcinogen withexperimental tumorigenic data. When heated todecomposition it emits acrid smoke and irritating vapors.   Antioxidant 245 Preparation Products And Raw materials

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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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