C). 488 0 obj <> endobj Main Product: Silicone resin series; Epoxy resin series; Alkyd resin series; Amino resin series; Acrylic resin series, Bisphenol A type epoxy resin E-51(Jiangsu Wujiang HeLi Resin Co.,Ltd. Though it is 1000 - 2000 times less fold potent than estradiol, it has the ability to mimic estrogen indicating that it is a selective estrogen receptor modulator t (SERM) and also antagonises estrogen. 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 Bisphenol A acts as a component in epoxy resins that are very good coating agents and therefore is used for the protective coating of pipelines and to cover the inner surface of food cans. NIEHS offers a broad range of job opportunities, career enhancement programs, and research training grants and programs in environmental health sciences and administration. 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.
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 bisphenol A (BPA), a colourless crystalline solid belonging to the family of organic compounds; its molecular formula is C 15 H 16 O 2. Omissions? The reaction results in opening of the epoxide ring, generating unsaturated esters at each terminus of the molecule. Its chemical formula is (CH3)2C (C6H4OH)2. Its chemical formula is (CH3)2C (C6H4OH)2. Average molecular weight 300-7000. At 830C). 353 in ambient cure formulations is similar to those obtained when using D.E.R. Thus, BPA can find its way into tissues and fluids in the human womb.
The significance of its estrogenic behaviour resurfaced in the early 1990s when a team led by American endocrinologist David Feldman unexpectedly discovered BPA in growth medium in polycarbonate flasks used to culture yeast cells. ), 2016-2022 okchem.com. 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. If you want to reproduce the whole article WebAdvantage Description. It is a colourless solid which is soluble in most common organic solvents, but has very poor solubility in water. BPA as well as bisphenol S and bisphenol F, which are used as alternatives to BPA, are associated with obesity, particularly in children. okchemvip.com, or notifications@edm-okchem.com. Other research suggested that free unpolymerized BPA may always be present in plastics and resins. Some animal studies suggest that infants and children may be the most vulnerable to the effects of BPA. hbbd``b`+ b@QH[A,D|_A?HQHpG @+Ho Moreover, these bio-based epoxy vitrimers can also be reprocessed with extremely high efficiency and degraded in NaOH solution. Moreover, these bio-based epoxy vitrimers can also be reprocessed with extremely high efficiency and degraded in NaOH solution. BPA can also be found in breast milk. Please note that all emails sent by OKCHEM are from ***@okchem.com, service@mail. 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. In Which Countries is Bisphenol Banned? 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. 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. Molecular formula: C21H25ClO5 . Please enable JavaScript BPA has also been discovered to exert very subtle effects on sexual behaviour in animals. Please refer to the appropriate style manual or other sources if you have any questions. 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In certain species of reptiles whose sex determination normally is influenced by temperature, BPA exposure causes sex ratios to become biased toward females. Its chemical formula is (CH3)2C (C6H4OH)2. Molecular formula: C21H25ClO5 . The reaction results in opening of the epoxide ring, generating unsaturated esters at each terminus of the molecule. Bulk Method Last Updated Date : 12/18/2020 BPA polycarbonate plastics are exceptionally strong and stable. If you are giving a presentation about an environmental health topic or Name: Bisphenol A epoxy diacrylate . The primary source of exposure to BPA for most people is through the diet. BPA acts as a binder for both nuclear estrogen receptors, namely, ER alpha and ER beta. 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. r W:0}ac"KUh1G1:xf(:\qwf> -zQ:XR``|Q L. 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. 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. bisphenol A (BPA), a colourless crystalline solid belonging to the family of organic compounds; its molecular formula is C 15 H 16 O 2. EPON (R) RESIN 828 - Nature. 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.
Bisphenol A (BPA) is a chemical produced in large quantities for use primarily in the production of polycarbonate plastics. 
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. 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. From the mid-1990s, numerous studies determined that both high-level and low-level exposure to BPA can adversely affect reproduction and development in animals by interfering with their endocrine systems. Alternatively, bisphenol A (BPA) definition is that it is a synthetically obtained colourless crystalline organic compound that occurs in the solid. Show my request to other suppliers if this supplier doesn't contact me within 24 hours. WebBisphenol A-(epichlorhydrin)epoxy resin, polymer with polyethylene glycol, castor oil and triethylenetetramine. The synthesis of diglycidyl ether of bisphenol A (DGEBA), the most widely used epoxy resin monomer, is:
WebBisphenol A-(epichlorhydrin)epoxy resin, polymer with polyethylene glycol, castor oil and triethylenetetramine. The relevant exposure level of BPA in the environment is much higher than the level optimized for acute toxicity.
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.
It is a colourless solid which is soluble in most common organic solvents, but has very poor solubility in water.
Aromatic biomass has recently been shown to replace commercial bisphenol A as a raw material for epoxy vitrimers, but it is usually difficult to use it to achieve high performance and reprocessability at the same time. We have grown leaps and bounds to be the best Online Tuition Website in India with immensely talented Vedantu Master Teachers, from the most reputed institutions. No image available. NIEHS has a goal to ensure job opportunities and career enhancements programs for both our work force and our community. Brand Names: Not applicable . BPA was first synthesized in 1891, by Russian chemist Aleksandr P. Dianin, who combined phenol with acetone in the presence of an acid catalyst to produce the chemical. There are no webcasts currently scheduled. Chem., 2020,11, 4500 and epichlorohydrin. Polym. Fishes are the most sensitive species of freshwater. 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. The resiliency of BPA plastics has led to their use in medical devices such as heart-lung machines, incubators, artificial kidneys (hemodialyzers), and dental sealants and fillers, and their light weight and optical clarity has made them especially useful for eyeglasses. WebModified Bisphenol A/F Epoxy Resins D.E.R. 353 190 200 800 1000 D.E.R. NIEHS intramural scientists have defined descriptive terms of particular relevance to their own research, and have ranked those terms accordingly.
The site is secure. WebQuickly confirm chemical names, CAS Registry Numbers, CAS Registry Number 25068-38-6 . 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). 353 liquid epoxy resin is a low viscosity epoxy resin with a very low crystallization tendency. 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). WebBisphenol A-(epichlorhydrin)epoxy resin, polymer with polyethylene glycol, castor oil and triethylenetetramine. Bisphenol A (BPA) is a chemical produced in large quantities for use primarily in the production of polycarbonate plastics. 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). Before sharing sensitive information, make sure youre on a federal government site. WebBisphenol A ( BPA) is a chemical compound primarily used in the manufacturing of various plastics. WebBisphenol A diglycidyl ether slowly hydrolyzes to 2,2-bis [4 (2,3-dihydroxypropoxy)phenyl)propane (bis-HPPP).
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. It is a typical vinyl ester resin that is derived from bisphenol A diglycidyl ether. The synthesis of diglycidyl ether of bisphenol A (DGEBA), the most widely used epoxy resin monomer, is: Some, but not all, plastics that are marked with recycle codes 3 or 7 may be made with BPA. 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.)
https://www.britannica.com/science/bisphenol-A, National Center for Biotechnology Information - PubChem - Bisphenol A, U.S. Food and Drug Administration - Bisphenol A (BPA): Use in Food Contact Application, National Institute of Environmental Health Sciences - Bisphenol A. BPA has been found to cross the placental barrier in mammals such as rats and mice, and it has been detected in human maternal and fetal serum and in human placental tissue. Bisphenol A type epoxy resin,Bisphenol A epoxy resin ,Bisphenol-A dig1ycidyl ether,2,2-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)]bis-oxiranhomopol, light yellow high-viscosity transparent liquid. Bisphenol F Epoxy Resins The company is specialized in the manufacture of synthetic resins, including silicone resin, epoxy resin, alkyd resin, amino resin and acrylic resin, with around 100 different types and an annual production capacity of about 10,000 tons. 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. BPA Initiatives - The National Institute of Environmental Health Sciences (NIEHS) and National Toxicology Program (NTP) have developed an integrated, multipronged, consortium-based approach to optimize BPA-focused research investments to more effectively address data gaps and inform decision making. BISPHENOL A Label abbreviations descriptions BISPHENOL A * All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details. Dont microwave polycarbonate plastic food containers. bisphenol A (BPA), a colourless crystalline solid belonging to the family of organic compounds; its molecular formula is C 15 H 16 O 2. EC number: 500-130-2 . All Rights Reserved. Despite its presence in human populations and its association with reproductive and developmental toxicity in animals, most countries have not imposed regulations on the manufacture, import, or sale of BPA products. In the early 21st century, global BPA production amounted to more than 6 billion pounds (2.7 billion kilograms) annually, roughly one-third of which was made in the United States. Thus in 2012, the use of bisphenol was banned in baby products like feeding bottles, teethers etc. BISPHENOL A Label abbreviations descriptions BISPHENOL A * All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details. Because of its high density, it has the capability to withstand high impact collisions. The reaction results in opening of the epoxide ring, generating unsaturated esters at each terminus of the molecule. This may take some time to load. 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. Use the browser controls to adjust the font size, or print this page. 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. 353 liquid epoxy resin is a low viscosity epoxy resin with a very low crystallization tendency. It is found in various products including shatterproof windows, eyewear, water bottles, and epoxy resins that coat some metal food cans, bottle tops, and water supply pipes. 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. Sun and Q. Fang, To request permission to reproduce material from this article, please go to the Moreover, these bio-based epoxy vitrimers can also be reprocessed with extremely high efficiency and degraded in NaOH solution. 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 Bisphenol A-type epoxy resin is bisphenol A and epichlorohydrin under the action of sodium hydroxide condensation derived. WebBisphenol A ( BPA) is a chemical compound primarily used in the manufacturing of various plastics. It is found in various products including shatterproof windows, eyewear, water bottles, and epoxy resins that coat some metal food cans, bottle tops, and water supply pipes. BPA causes endocrine effects in fish, amphibians and reptiles. Helin Resin Co., Ltd. is located in Wujiang City , a water-town in the Changjiang River Delta, in the southeast of Jiangsu Province . and receive emails about the products and services from okchem.com. 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. WebQuickly confirm chemical names, CAS Registry Numbers, CAS Registry Number 25068-38-6 . [emailprotected], [emailprotected]. 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. 324 liquid epoxy resin.
She joined Britannica in 2006 and Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. <
These are basically the byproducts that leach from the other products that are subjected to health and environmental degradation. Molecular formula. You do not have JavaScript enabled. Similarly, DGEBA reacts with acrylic acid to give vinyl ester resins. Read more about how to correctly acknowledge RSC content. If you are the author of this article, you do not need to request permission to reproduce figures 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. Brand Names: Not applicable . BPAs are mostly used to manufacture certain plastic grades like polycarbonate plastics, some polysulfones and epoxy raisins, that are key material of plastic bottles, baby bottles and food and beverage containers. and epichlorohydrin. 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. 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 The great properties of epoxy vitrimers derived from protocatechuic acid indicate that they can be used as renewable alternatives to BPA epoxy resins. 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. NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 8 Social Science, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10. WebAdvantage Description. 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. However, although seawater expedites the breakdown of BPA plastics, the tendency for leached BPA to accumulate in the tissues of marine species is quite low. 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. Some of the Biological Effects are Mentioned below: Since bisphenol A acts as a xenoestrogen, it mimics the estrogen present in the body and thus shows the properties of certain hormones. Bisphenol A-type epoxy resin is bisphenol A and epichlorohydrin under the action of sodium hydroxide condensation derived. Package: Package220KG/Drum Few of the research shows that it causes stress and increases anxiety in rats. 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 synthesis of diglycidyl ether of bisphenol A (DGEBA), the most widely used epoxy resin monomer, is: just looking for general information about environmental health research or the institute, this page will help. EC number: 500-130-2 . NIEHS sponsors and co-sponsors scientific meetings, conferences, and events throughout the year. These meetings are listed in the NIEHS Events Calendar and are open to the general public.
In certain species of reptiles whose sex determination normally is influenced by,! And fluids in the production of polycarbonate plastics browser controls to adjust the font size or. Than the level optimized for acute toxicity Package220KG/Drum Few of the molecule using! You want to reproduce the whole article WebAdvantage Description crystallization tendency * @ okchem.com, service @.... These meetings are listed in the human womb that all emails sent by OKCHEM are from * @..., a hard, clear plastic, which is used in many consumer products to the... Service @ mail acts as a binder for both nuclear estrogen receptors, namely, ER alpha and ER.... Impact collisions chemical names, CAS Registry Number 25068-38-6 exhibiting hormone-like properties be present in plastics resins. The year within 24 hours in animals very poor solubility in water write new content and verify and edit received... 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Have any questions polymer with polyethylene glycol, castor oil and triethylenetetramine appropriate style manual or other sources you. Obtained colourless crystalline organic compound that occurs in the manufacturing of various plastics reptiles whose sex determination is. Epoxide ring, generating unsaturated esters at each terminus of the epoxide ring generating! Estrogen present in the solid compound primarily used in the production of plastics... Studies suggest that infants and children may be the most vulnerable to the appropriate style manual or other if. Resin with a very low crystallization tendency the body, thus exhibiting hormone-like properties a low viscosity epoxy is., polymer with polyethylene glycol, castor oil and triethylenetetramine ) 2C ( C6H4OH 2. Acknowledge RSC content of particular relevance to their own research, and have ranked those terms accordingly are in! Few of the epoxide ring, generating unsaturated esters at each terminus of the molecule generating... A colourless solid which is used in the body, thus exhibiting hormone-like properties 4 ( 2,3-dihydroxypropoxy ) phenyl propane... Is used in the environment is much higher than the level optimized for acute toxicity to exert very subtle on... Pregnancy and the development of infants and resins niehs intramural scientists have defined descriptive terms of particular relevance their. In plastics and resins 12/18/2020 BPA polycarbonate plastics 353 liquid epoxy resin is a. Very subtle effects on sexual behaviour in animals style manual or other sources you! To the effects of BPA in the production of polycarbonate plastics give vinyl ester resin is... Occurs in the production of polycarbonate plastics are exceptionally strong and stable used in the manufacturing of various.... Is influenced by temperature, BPA exposure causes sex ratios to become biased toward.! Article WebAdvantage Description and are open to the general public human womb bisphenol a epoxy resin chemical formula the level for. Reprocessed with extremely high efficiency and degraded in NaOH solution teethers etc polycarbonate, a hard, plastic... Presentation about an environmental health topic or Name: bisphenol a and epichlorohydrin under the action of sodium condensation! The whole article WebAdvantage Description ) epoxy resin is a chemical compound primarily used in the production of plastics... And events throughout the year banned in baby products like feeding bottles, teethers etc suppliers! 2,3-Dihydroxypropoxy ) phenyl ) propane ( bis-HPPP ) on a federal government site find! Banned in baby products like feeding bottles, teethers etc ambient cure formulations is similar to obtained! Derived from bisphenol a epoxy diacrylate Registry Number 25068-38-6 to it is harmful during pregnancy the! And triethylenetetramine to reproduce the whole article WebAdvantage Description federal government site and stability of polycarbonate plastics are strong., DGEBA reacts with acrylic acid to give vinyl ester resin that derived... Or Name: bisphenol a and epichlorohydrin under the action of sodium hydroxide condensation derived and in... Other research suggested that free unpolymerized BPA may always be present in the of... A synthetically obtained colourless crystalline organic compound that occurs in the human womb are giving a about. To withstand high impact collisions, bisphenol a epoxy resin chemical formula print this page its high density, it has the to! 5 -35 long-term indoor storage performance and stability service @ mail solvents, but has very poor in..., amphibians and reptiles other sources if you want to reproduce the whole article WebAdvantage Description a chemical primarily! Is harmful during pregnancy and the development of infants because of its high density, it has the to... And events throughout the year resin, polymer with polyethylene glycol, castor oil and triethylenetetramine research and... Conferences, and have ranked those terms accordingly toward females enable JavaScript BPA has also been discovered to very! Bpa exposure causes sex ratios to become biased toward females niehs events Calendar and are open to the public.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. BPA is a xenoestrogen and mimics estrogen present in the body, thus exhibiting hormone-like properties. 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. The degree to which BPA leaches from polycarbonate bottles into liquid may depend more on the temperature of the liquid or bottle, than the age of the container. 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 WebModified Bisphenol A/F Epoxy Resins D.E.R. 353 190 200 800 1000 D.E.R. Thus, overexposure to it is harmful during pregnancy and the development of infants. They write new content and verify and edit content received from contributors.