Find out about the exciting discoveries being made by NIEHS and NIEHS-supported researchers that are helping to improve health and save lives. 353 liquid epoxy resin is a low viscosity epoxy resin with a very low crystallization tendency. On the other hand, studies of terrestrial and freshwater species have indicated that prolonged exposure to even low concentrations of the chemical can cause abnormalities. EPON (R) RESIN 828 - Nature. Examples of findings from the vast body of scientific literature on the subject include reduced testicular sperm count in male mice, teratogenic effects in Xenopus laevis frogs, and damage to sperm and eggs in fathead minnows (Pimephales promelas) and to sperm production in male swordtails (Xiphophorus helleri). to access the full features of the site or access our, Key Laboratory of Synthetic and Self-assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese academy of Sciences, Chinese Academy of Science, 345 Lingling Road, Shanghai, PR China. WebBisphenol A diglycidyl ether slowly hydrolyzes to 2,2-bis [4 (2,3-dihydroxypropoxy)phenyl)propane (bis-HPPP). we live in today. BPA is found in epoxy resins and polycarbonate plastics. BPA has also been discovered to exert very subtle effects on sexual behaviour in animals. Bisphenol A can leach into food from the protective internal epoxy resin coatings of canned foods and from consumer products such as polycarbonate tableware, food storage containers, water bottles, and baby bottles. Download or play NIEHS Health Chat's with a wide range of experts and topics. BPA polycarbonate plastics are very sturdy in nature. In Which Countries is Bisphenol Banned? Alternatively, bisphenol A (BPA) definition is that it is a synthetically obtained colourless crystalline organic compound that occurs in the solid. WebIn this work, the new epoxy resins showed much better thermal and mechanical properties (T g = 157 C, tensile strength = 65 MPa) than commercial BPA-based epoxy resins. An official website of the United States government. Epoxy vitrimers are the most promising of all vitrimers because they are easy to prepare and durable for long-term service. NIEHS is committed to conducting the most rigorous research in environmental health sciences, and to communicating the results of this research to the public. This may take some time to load. Its chemical formula is (CH3)2C(C6H4OH)2.

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Some of the Environmental Effects of Bisphenol A are: BPA can enter into the environment directly through the leaching of chemicals, or degradation of plastic bottles, industries that use BPA casting sands, paper and other recycling industries, plastic coating and straining manufacturers. and epichlorohydrin. Chemical Identity. r W:0}ac"KUh1G1:xf(:\qwf> -zQ:XR``|Q L. WebBisphenol-A 4,4'- (propane-2,2-diyl)diphenol Biphenol A p,p'-Isopropylidenebisphenol DIAN Parabis A 2,2-Bis (p-hydroxyphenyl)propane Rikabanol p,p'-Bisphenol A 4- [2- (4-hydroxyphenyl)propan-2-yl]phenol 2,2-Di (4-phenylol)propane Bisferol A Phenol, 4,4'- (1-methylethylidene)bis- Ipognox 88 p,p'-Dihydroxydiphenylpropane BPA Pluracol 245 WebQuickly confirm chemical names, CAS Registry Numbers, CAS Registry Number 25068-38-6 . ICP15035080-2, By creating an account, I agree to okchem.com Bisphenol A-type epoxy resin is bisphenol A and epichlorohydrin under the action of sodium hydroxide condensation derived. Before sharing sensitive information, make sure youre on a federal government site. People are generally exposed to minute levels of BPA, mostly from the ingestion of food or beverages that have been in contact with materials manufactured with BPA. WebIn this work, the new epoxy resins showed much better thermal and mechanical properties (T g = 157 C, tensile strength = 65 MPa) than commercial BPA-based epoxy resins. BPA can also be found in breast milk. Key Laboratory of Synthetic and Self-assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese academy of Sciences, Chinese Academy of Science, 345 Lingling Road, Shanghai, PR China Some countries and regions, including Canada, Europe, Sweden, and the United States, on the other hand, have formally banned BPA from infant and childrens products, including, variously, cans of infant formula, baby bottles, and sippy cups. The 2003-2004 National Health and Nutrition Examination Survey (NHANES III) conducted by the Centers for Disease Control and Prevention (CDC) found detectable levels of BPA in 93% of 2517 urine samples from people six years and older. ), 2016-2022 okchem.com. BPA is an industrial chemical used to make polycarbonate, a hard, clear plastic, which is used in many consumer products. The synthesis of diglycidyl ether of bisphenol A (DGEBA), the most widely used epoxy resin monomer, is: Please refer to the appropriate style manual or other sources if you have any questions. Molecular formula. Bisphenol F Epoxy Resins BPA mostly affects the growth and reproduction of marine life. It also possesses the property that interrupts the nerve network that manages the signal for the development of the reproductive system in humans and animals. One reason people may be concerned about BPA is because human exposure to BPA is widespread. Chemical name (IUPAC): 4,4'-Isopropylidenediphenol, oligomeric reaction products with 1 -chloro-2,3-epoxypropane, esters with acrylic acid .

They also found that BPA produced estrogenic effects in cells at levels 5 to 10 times lower than those used for safety assessments by companies that manufactured polycarbonate plastics. Alternatively, bisphenol A (BPA) definition is that it is a synthetically obtained colourless crystalline organic compound that occurs in the solid phase belonging to the diphenylmethane group and is soluble in organic solvents but poorly dissolves in water (0.344 % wt. Moreover, these bio-based epoxy vitrimers can also be reprocessed with extremely high efficiency and degraded in NaOH solution. BPA as well as bisphenol S and bisphenol F, which are used as alternatives to BPA, are associated with obesity, particularly in children. It is widely used in coatings, adhesives, fiberglass, laminates, electronic casting, potting, encapsulation and other fields because of its good physical and mechanical properties, chemical resistance and electrical insulating properties. Parents and caregivers can make the personal choice to reduce exposures of their infants and children to BPA: This content is available to use on your website. Bisphenol A structure represents a bisphenol 4,4- methanediylphenol in which two methyl groups replace the methyl hydrogens attached with the carbon having a tetrahedral bond. Molecular formula: C21H25ClO5 . If you are an author contributing to an RSC publication, you do not need to request permission

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Brand Names: Not applicable . Use the browser controls to adjust the font size, or print this page. View our page to search various areas of interest and methodology. BPA subsequently was found to leach from not only plastics but also resins in tin cans. In this work, the new epoxy resins showed much better thermal and mechanical properties (Tg = 157 C, tensile strength = 65 MPa) than commercial BPA-based epoxy resins. Similarly, DGEBA reacts with acrylic acid to give vinyl ester resins. bisphenol A (BPA), a colourless crystalline solid belonging to the family of organic compounds; its molecular formula is C 15 H 16 O 2. It is a colourless solid which is soluble in most common organic solvents, but has very poor solubility in water. BPA is best known for its use in the manufacture of polycarbonate plastics and epoxy resins, particularly those found in water bottles, baby bottles, and other beverage and food containers. CAS Common Chemistry. WebEpoxy resins are typically formed by the reaction of compounds containing at least two active hydrogen atoms (polyphenolic compounds, diamines, amino phenols, heterocyclic imides and amides, aliphatic diols, etc.)

The .gov means its official. Sun and Q. Fang, Chemical Identity. If you are the author of this article, you do not need to request permission to reproduce figures Its chemical formula is (CH, . CAS Name Bisphenol A epoxy resin Molecular Formula (C 15 H 16 O 2.C 3 H 5 ClO) x Discover more in SciFinder n. Cite this Page Bisphenol A epoxy resin. bisphenol resin epoxy lg [emailprotected], [emailprotected]. NIEHS research uses state-of-the-art science and technology to investigate the interplay between environmental exposures, human biology, genetics, and common diseases to help prevent disease and improve human health. Alkylation of BPA with epichlorohydrin results in the formation of vinyl ester resins. WebEpoxy resin | C21H25ClO5 | CID 169944 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. At 830C). WebModified Bisphenol A/F Epoxy Resins D.E.R. 353 190 200 800 1000 D.E.R. WebBisphenol A ( BPA) is a chemical compound primarily used in the manufacturing of various plastics. The primary routes for environmental contamination include leaching from landfills and release from municipal water supplies, such as those associated with wastewater-treatment plants and paper mills. Let us know if you have suggestions to improve this article (requires login). It is a colourless solid which is soluble in most common organic solvents, but has very poor solubility in water. in a third-party publication (excluding your thesis/dissertation for which permission is not required) bisphenol A type Epoxy resin depending on the molecular weight and degree of polymerization n, the resin is yellow to amber transparent viscous liquid (or solid), the average molecular weight in the production of 300~700, n<2, softening point below 50 is called low molecular weight epoxy resin (I. The performance of D.E.R. WebBisphenol A ( BPA) is a chemical compound primarily used in the manufacturing of various plastics. 0 CAS Name Bisphenol A epoxy resin Molecular Formula (C 15 H 16 O 2.C 3 H 5 ClO) x Discover more in SciFinder n. Cite this Page Bisphenol A epoxy resin. BPA is best known for its use in the manufacture of polycarbonate plastics and epoxy resins, particularly those found in water bottles, baby bottles, and other beverage and food containers. %PDF-1.5 % WebAccording to the water-borne epoxy resin preparation method, bisphenol-A or bisphenol-F type epoxy resin low in molecular weight is subjected to chain extension, and comb-shaped hydrophilic nonionic chain segments are introduced into the structure of the bisphenol-A or bisphenol-F type epoxy resin through chemical modification to obtain

NIEHS sponsors and co-sponsors scientific meetings, conferences, and events throughout the year. Polycarbonate is strong and durable, but over time it may break down from over use at high temperatures. In general, BPA levels in humans have measured well below 50 micrograms per kilogram of body weight per day, which is the maximum acceptable (or reference) dose set by the U.S. Environmental Protection Agency (EPA). Bisphenol A-type epoxy resin is bisphenol A and epichlorohydrin under the action of sodium hydroxide condensation derived. If you want to reproduce the whole article Thus, overexposure to it is harmful during pregnancy and the development of infants. The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. The synthesis of diglycidyl ether of bisphenol A (DGEBA), the most widely used epoxy resin monomer, is: With Shanghai close to the east, Jiaxing and Hangzhou to the south, Tai Lake to the west and Suzhou to the north, Wujiang City enjoys a superior location and convenient transportation. and diagrams provided correct acknowledgement is given.

StorageThis product in 5 -35 long-term indoor storage performance and stability. WebEpoxy resin | C21H25ClO5 | CID 169944 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

Bisphenol F Epoxy Resins Starting from protocatechuic acid, a series of high-performance epoxy vitrimers with different catalyst loadings and ratios of epoxy/anhydride were prepared.

Another reason for concern, especially for parents, may be because some animal studies report effects in fetuses and newborns exposed to BPA. The performance of D.E.R. Alternatively, bisphenol A (BPA) definition is that it is a synthetically obtained colourless crystalline organic compound that occurs in the solid phase belonging to the diphenylmethane group and is soluble in organic solvents but poorly dissolves in water (0.344 % wt.

In plants, for instance, BPA exposure causes an increase in micronuclei in root tip cells, an indication of DNA damage. Much speculation centres around whether BPA is a true endocrine disruptor chemical (EDC) in humans (broadly defined, an EDC is an exogenous substance, one that comes from outside the body, that interferes with natural hormones in the body). The relevant exposure level of BPA in the environment is much higher than the level optimized for acute toxicity. Ans. WebBisphenol A 99% Synonym (s): 2,2-Bis (4-hydroxyphenyl)propane, 4,4-Isopropylidenediphenol Linear Formula: (CH3)2C (C6H4OH)2 CAS Number: 80-05-7 Molecular Weight: 228.29 Beilstein: 1107700 EC Number: 201-245-8 MDL number: MFCD00002366 PubChem Substance ID: 24854386 Pricing and availability is not please go to the Copyright Clearance Center request page. NIEHS provides many opportunities for funding to individual researchers, organizations, and businesses. They write new content and verify and edit content received from contributors. and epichlorohydrin. Bisphenol A is an organic compound that is processed synthetically and belongs to the diphenylmethane and bisphenol with two hydroxyphenyl groups attached to the carbon atom of the main chain. No image available. Due to their high melting point, they have the ability to withstand high temperatures even inside microwaves. StorageThis product in 5 -35 long-term indoor storage performance and stability. Show my request to other suppliers if this supplier doesn't contact me within 24 hours. ",?H"x@L #F j Bisphenol A-type epoxy resin is bisphenol A and epichlorohydrin under the action of sodium hydroxide condensation derived. BPA is best known for its use in the manufacture of polycarbonate plastics and epoxy resins, particularly those found in water bottles, baby bottles, and other beverage and food containers. At high concentration, BPA also has the ability to act as an antagonist of the androgen receptor. The site is secure. Bisphenol A (BPA) is a chemical produced in large quantities for use primarily in the production of polycarbonate plastics. The scientists proceeded to isolate BPA from samples of water that had been autoclaved (sterilized at very high temperature and pressure) in the flasks, confirming that the chemical they had detected earlier in the yeast cultures had in fact come from the plastic used to make the flasks. This search feature obtains best-matches with the terms you choose, and shows an overall score based on the scientific rankings. Brand Names: Not applicable . 353 liquid epoxy resin is a low viscosity epoxy resin with a very low crystallization tendency. WebBisphenol A-(epichlorhydrin)epoxy resin, polymer with polyethylene glycol, castor oil and triethylenetetramine. Fishes are the most sensitive species of freshwater. People are generally exposed to minute levels of BPA, mostly from the ingestion of food or beverages that have been in contact with materials manufactured with BPA. Structure: Uses and These are basically the byproducts that leach from the other products that are subjected to health and environmental degradation. provided correct acknowledgement is given. Alternatively, bisphenol A (BPA) definition is that it is a synthetically obtained colourless crystalline organic compound that occurs in the solid phase belonging to the diphenylmethane group and is soluble in organic solvents but poorly dissolves in water (0.344 % wt. While air, dust, and water are other possible sources of exposure, BPA in food and beverages accounts for the majority of daily human exposure. The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance.

CAS number(s): 55818-57-0 . Name: Bisphenol A epoxy diacrylate . Helin Resin Co., Ltd. is located in Wujiang City , a water-town in the Changjiang River Delta, in the southeast of Jiangsu Province . Bisphenol A (BPA) is a chemical produced in large quantities for use primarily in the production of polycarbonate plastics. WebEpoxy is a synthetic resin that uses two chemical components (typically diglycidyl ethers and a combination of bisphenol A and epichlorohydrin) to harden or cure. A little percentage of it enters our body through air, dust and contaminated water. Ans. Polym. Chemical name (IUPAC): 4,4'-Isopropylidenediphenol, oligomeric reaction products with 1 -chloro-2,3-epoxypropane, esters with acrylic acid . NIEHS offers a broad range of job opportunities, career enhancement programs, and research training grants and programs in environmental health sciences and administration. Dont microwave polycarbonate plastic food containers. Vitrimers have constituted one of the hottest research fields in recent years since they are not only mechanically robust and thermally stable like traditional thermosets but also can be recycled through a physical hot press like thermoplastics. Bisphenol A is an organic compound that is processed synthetically and belongs to the diphenylmethane and bisphenol with two hydroxyphenyl groups attached to the carbon atom of the main chain. hbbd``b`+ b@QH[A,D|_A?HQHpG @+Ho Bisphenol A-type epoxy resin is bisphenol A and epichlorohydrin under the action of sodium hydroxide condensation derived. Its chemical formula is (CH3)2C (C6H4OH)2.

Read more about how to correctly acknowledge RSC content. Please be alert of other emails sent to you in the name of OKCHEM. In 2003, the USA used 856000 tons of BPA to produce 21% of epoxy raisins that are mostly used in the printing industry for making sale receipts and other coating papers. bisphenol A type Epoxy resin depending on the molecular weight and degree of polymerization n, the resin is yellow to amber transparent viscous liquid (or solid), the average molecular weight in the production of 300~700, n<2, softening point below 50 is called low molecular weight epoxy resin (I. EPON (R) RESIN 828 - Nature. The National Institute of Environmental Health Sciences (NIEHS) is expanding and accelerating its contributions to scientific knowledge of human health and the environment, and to the health and well-being of people everywhere. 324 liquid epoxy resin. WebBisphenol A-(epichlorhydrin)epoxy resin, polymer with polyethylene glycol, castor oil and triethylenetetramine. 488 0 obj <> endobj 324 liquid epoxy resin. WebBisphenol A diglycidyl ether slowly hydrolyzes to 2,2-bis [4 (2,3-dihydroxypropoxy)phenyl)propane (bis-HPPP). According to the ratio of raw materials, the reaction conditions and adopt the same method can be obtained with different degrees of polymerization of low molecular weight viscous liquid and high molecular weight, high softening point of the solid. C). Thus they are very susceptible as a material for safety glasses, bulletproof windows and helmets.

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