styrene molecular weight

Commercially significant products include polystyrene, ABS, styrene-butadiene (SBR) rubber, styrene-butadiene latex, SIS (styrene-isoprene-styrene), S-EB-S (styrene-ethylene/butylene-styrene), styrene-divinylbenzene (S-DVB), styrene-acrylonitrile resin (SAN), and unsaturated polyesters used in resins and thermosetting compounds. As the difference in boiling points between the two compounds is only 9 °C at ambient pressure this necessitates the use of a series of distillation columns. A common request on this site is to convert grams to moles. [20][30][31][32] Styrene is largely metabolized into styrene oxide in humans, resulting from oxidation by cytochrome P450. Development of the process is ongoing. Another application is as cement used in total hip replacements as well as total knee replacements. Convert grams Styrene to moles or moles Styrene to grams. To complete this calculation, you have to know what substance you are trying to convert. [21] The reaction is highly endothermic and reversible, with a typical yield of 88–94%. 100-42-5)", "EPA settles case against Phoenix company for toxic chemical reporting violations", "EPA Fines California Hot Tub Manufacturer for Toxic Chemical Release Reporting Violations", "Government Says 2 Common Materials Pose Risk of Cancer", Epidemiologic Studies of Styrene and Cancer: A Review of the Literature, "Exposure to styrene and chronic health effects: mortality and incidence of solid cancers in the Danish reinforced plastics industry", "Styrene entry in National Toxicology Program's Thirteenth Report on Carcinogens", "After 40 years in limbo: Styrene is probably carcinogenic", "Neurotoxic effects of styrene: further evidence", "Vizag Gas Leak Live News: Eleven dead, several hospitalised after toxic gas leak from LG Polymers plant", "Hundreds in hospital after leak at Indian chemical factory closed by lockdown", CDC – Styrene – NIOSH Workplace Safety and Health Topic, Safety and Health Topics | Styrene (OSHA), Occupational Exposure to Chemicals and Hearing Impairment, Preventing Hearing Loss Caused by Chemical (Ototoxicity) and Noise Exposure Safety and Health Information Bulletin (SHIB), https://en.wikipedia.org/w/index.php?title=Styrene&oldid=996637994, Articles with dead external links from June 2018, Articles with permanently dead external links, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, All articles with links needing disambiguation, Articles with links needing disambiguation from August 2020, Creative Commons Attribution-ShareAlike License, TWA 100 ppm C 200 ppm 600 ppm (5-minute maximum peak in any 3 hours), Note that Blyth and Hofmann state the empirical formula of styrene as C, This page was last edited on 27 December 2020, at 20:26. Styrene is also co-produced commercially in a process known as POSM (Lyondell Chemical Company) or SM/PO (Shell) for styrene monomer / propylene oxide. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. Contents. STYRENE/ISOPRENE COPOLYMER AldrichCPR; CAS Number: 25038-32-8; Linear Formula: C13H16; find null-S462152 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich. [13] In 1865, the German chemist Emil Erlenmeyer found that styrene could form a dimer,[14] and in 1866 the French chemist Marcelin Berthelot stated that "metastyrol" was a polymer of styrene (i.e. Approximately 25 million tonnes of styrene were produced in 2010, increasing to around 35 million tonnes by 2018. [40] In 2012, the Danish EPA concluded that the styrene data do not support a cancer concern for styrene. Styrene is an organic compound with the chemical formula C6H5CH=CH2. The compound evaporates easily and has a sweet smell, although high concentrations have a less pleasant odor. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass. The word “polymer” has been derived from the Greek words 'poly' and 'meros', implying many parts, and refers to a characterizing feature of polymeric materials – their chain like structure. Ethane, along with ethylbenzene, is fed to a dehydrogenation reactor with a catalyst capable of simultaneously producing styrene and ethylene. [39] Despite this claim, work has been done by Danish researchers to investigate the relationship between occupational exposure to styrene and cancer. Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. This derivative of benzene is a colorless oily liquid, although aged samples can appear yellowish. 2021-01-02. Stephen K. Ritter, Chemical & Engineering News, 19 March 2007, p.46. A comprehensive mathematical model for styrene polymerization with asymmetric bifunctional initiators was developed, aiming at the prediction of not only productivity and average molecular properties as previous models did, but also the complete molecular weight distribution. In 1845, French chemist Emil Kopp suggested that the two compounds were identical,[16] and in 1866, Erlenmeyer suggested that both "cinnamol" and styrene might be vinylbenzene. Finding molar mass starts with units of grams per mole (g/mol). Styrene is named after storax balsam, the resin of Liquidambar trees of the Altingiaceae plant family. For instance, polymerizing styrene, a monomer, under suitable reaction conditions, results in the polymer polystyrene (Figure 1). These relative weights computed from the chemical equation are sometimes called equation weights. Data compiled as indicated in comments: BS - Robert L. Brown and Stephen E. Stein TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein AC - William E. Acree, Jr., James S. Chickos DRB - Donald R. Burgess, Jr. DH- Eugene S. Domalski and Elizabeth D. Hearing Component Compounds: CID 7845 (1,3-Butadiene) CID 7501 (Styrene) Dates: Modify . 6,806 6,944 4,801 8,544 Around 80% of styrene is produced by the dehydrogenation of ethylbenzene. 12.2.3 Styrene-butadiene rubber (SBR) Styrene-butadiene rubber is the most-widely used synthetic rubber in the elastomer industry, with the largest volume production.It is a copolymer of styrene (C 6 H 5 CH=CH 2) and butadiene (CH 2 =CH–CH=CH 2), typically containing about 23% styrene and 77% butadiene. Polystyrene-polybutadiene. molar mass and molecular weight. The remaining 1-phenylethanol is dehydrated to give styrene: Extraction from pyrolysis gasoline is performed on a limited scale. They had found that cinnamic acid could be decarboxylated to form "cinnamene" (or "cinnamol"), which appeared to be styrene. Approximately 25 million tonnes of styrene were produced in 2010,[6] increasing to around 35 million tonnes by 2018. Styrene maleic anhydride (SMA or SMAnh) is a synthetic polymer that is built-up of styrene and maleic anhydride monomers.The monomers can be almost perfectly alternating, making it an alternating copolymer, but (random) copolymerisation with less than 50% maleic anhydride content is also possible. [20], Styrene can be produced from toluene and methanol, which are cheaper raw materials than those in the conventional process. It is reported[24] that an approximately 9:1 mixture of styrene and ethylbenzene is obtained, with a total styrene yield of over 60%. SBR 1500 contains antioxidant to avoid product degradation. The vast majority of styrene is produced from ethylbenzene,[20] and almost all ethylbenzene produced worldwide is intended for styrene production. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications. [36][37] However, a STATS author describes[38] a review that was done on scientific literature and concluded that "The available epidemiologic evidence does not support a causal relationship between styrene exposure and any type of human cancer". Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. The process attempts to overcome previous shortcomings in earlier attempts to develop production of styrene from ethane and benzene, such as inefficient recovery of aromatics, production of high levels of heavies and tars, and inefficient separation of hydrogen and ethane. The compound evaporates easily and has a sweet smell, although high concentrations have a less pleasant odor. Substituted Styrene's Preparation of Low Molecular Weight Monofunctional Polystyrene Macroinitiators: MW 1100 and 2000. of a chemical compound, More information on The role of cytochrome-P-450 in initiating the metabolism of styrene derivatives was investigated in Holtzman-rat liver homogenates. [45][46], The neurotoxic[47] properties of styrene have also been studied and reported effects include effects on vision[48] (although unable to reproduce in a subsequent study[49]) and on hearing functions. The flask was sealed with a rubber septum, degassed and back-filled with N 2 3 times. The reason is that the molar mass of the substance affects the conversion. [23] Exelus Inc. claims to have developed this process with commercially viable selectivities, at 400–425 °C and atmospheric pressure, by forcing these components through a proprietary zeolitic catalyst. Styrene occurs naturally in small quantities in some plants and foods (cinnamon, coffee beans, balsam trees[disambiguation needed] and peanuts)[7] and is also found in coal tar. They concluded, "The findings have to be interpreted with caution, due to the company based exposure assessment, but the possible association between exposures in the reinforced plastics industry, mainly styrene, and degenerative disorders of the nervous system and pancreatic cancer, deserves attention". Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director 0.3146g CuBr (2.2 x 10-3 mole) was added to a round bottom flask. SBR 1500 is a high-molecular-weight SBR combining good extrusion behavior and superior compound properties. (C 8 H 8) n is a synthetic aromatic hydrocarbon polymer with chemical name Polystyrene.. Convert grams Styrene to moles  or  moles Styrene to grams, Molecular weight calculation: Butadiene-styrene rubber. A de… From p. 348: "Analysis as well as synthesis has equally proved that styrol and the vitreous mass (for which we propose the name of metastyrol) possess the same constitution per cent.". This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. 574713 ; The Syk Inhibitor III, also referenced under CAS 1485-00-3, controls the biological activity of Syk. [8][9] He also noticed that when styrol was exposed to air, light, or heat, it gradually transformed into a hard, rubber-like substance, which he called "styrol oxide". Styrene is regarded as a "known carcinogen", especially in case of eye contact, but also in case of skin contact, of ingestion and of inhalation, according to several sources. 2005-08-08. mol −1 : Appearance Colorless liquid Density: 0.91 g/cm 3: Melting point −24 °C (−11 °F; 249 K) Boiling point: 165 to 169 °C (329 to 336 °F; 438 to 442 K) Six parasubstituted styrenes were prepared from the corresponding acetophenones by borohydride reduction to p-bromostyrene, p-chlorostyrene, p-cyanostyrene, p-methylstyrene, p-phenylstyrene, and p-methoxystyrene. An example is the 2019 explosion of the tanker Stolt Groenland; in this incident 5,250 metric tons of styrene monomer detonated while the ship was docked in Ulsan, Republic of Korea. Simon, in Polymer Nanocomposites, 2006. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. For further details of the history of styrene, see: F. W. Semmler, (Blyth and Hofmann, 1845a), p. 348. [50][51][52][53] Studies on rats have yielded contradictory results,[51][52] but epidemiologic studies have observed a synergistic interaction with noise in causing hearing difficulties. [57][58], InChI=1S/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2, Except where otherwise noted, data are given for materials in their. Styrene is the precursor to polystyrene and several copolymers. With all other conditions the same, addition of 4.23 mg/L of… Styrene-butadiene copolymer is a polymer. Polystyrene is a hard, brilliantly transparent, stiff resin. CS1 maint: multiple names: authors list (, R. Fittig und F. Binder "Ueber die Additionsproducte der Zimmtssaure" in "Untersuchungen über die ungesättigten Säuren. This hydroperoxide is then used to oxidize propylene to propylene oxide, which is also recovered as a co-product. Molar mass of C8H8 = 104.14912 g/mol. Sigma-Aldrich offers a number of Styrene products. [29] This is known as autopolymerisation, and will take place at ambient temperatures and above. The dehydrogenation effluent is cooled and separated and the ethylene stream is recycled to the alkylation unit. Styrene-Butadiene rubber (SBR or Styrene-butadiene) is a synthetic rubber comprising of styrene and butadiene monomers. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. [18] Eventually, in 1876, the Dutch chemist van 't Hoff resolved the ambiguity: the optical activity of the styrene that was obtained by distilling storax resin was due to a contaminant.[19]. [15] Meanwhile, other chemists had been investigating another component of storax, namely, cinnamic acid. Ethylbenzene is produced via a Friedel–Crafts reaction between benzene and ethylene; originally this used aluminum chloride as a catalyst, but in modern production this has been replaced by zeolites. ›› Styrene molecular weight. At 100 °C it will polymerise at a rate of ~2% per hour, and more rapidly than this at higher temperatures. 12.0107*8 + 1.00794*8. [34][35] On 10 June 2011, the U.S. National Toxicology Program has described styrene as "reasonably anticipated to be a human carcinogen". This structure is formed by developing chemical links between a number of monomers or repeating units. [44] Various regulatory bodies refer to styrene, in various contexts, as a possible or potential human carcinogen. This site explains how to find molar mass. [43] The National Toxicology Program of the U.S. Department of Health and Human Services has determined that styrene is "reasonably anticipated to be a human carcinogen". Find more compounds similar to Styrene.. This is achieved using superheated steam (up to 600 °C) over an iron(III) oxide catalyst. [54][55][56], On 7 May 2020, a gas, reported to be styrene, leaked from a tank at the LG Chem (LG Polymers India Private Limited) plant at RR Venkatapuram, Visakhapatnam, Andra Pradesh, India. This process has suffered from low selectivity associated with the competing decomposition of methanol. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. We use the most common isotopes. Shinya Teramachi, Akira Hasegawa, Makoto Akatsuka, Akira Yamashita, and ; Nobuhiro Takemoto [26], A laboratory synthesis of styrene entails the decarboxylation of cinnamic acid:[27], Styrene was first prepared by this method.[28]. Go To: Top, References, Notes Data compilation copyrightby the U.S. Secretary of Commerce on behalf of the U.S.A.All rights reserved. Note: Cheméo is only indexing the data, follow the source links to retrieve the latest data. Browse the list of Acid Number (mg KOH/gm) Tg, °C TS (Softening Point), °C T1, °C T2, °C Styrene (/ˈstaɪriːn/)[5] is an organic compound with the chemical formula C6H5CH=CH2. [10] By 1845, the German chemist August Hofmann and his student John Blyth had determined styrene's empirical formula: C8H8. At room temperature, the thermoplastic polymer is a solid but when heated above 100 °C it flows. Question:.The Number-average Molecular Weight Of A Poly (styrene-butadiene) Alternating Copolymer Is 1,350,000 G/mol.What Is The Average Number Of Styrene And Butadiene Repeat Units Per Molecule. As such, the two production processes are often highly integrated. About a few thousand monomers typically comprise a chain of polystyrene, giving a molecular weight of 100,000–400,000 g/mol. US7985819B2 US12/411,522 US41152209A US7985819B2 US 7985819 B2 US7985819 B2 US 7985819B2 US 41152209 A US41152209 A US 41152209A US 7985819 B2 US7985819 B2 US 7985819B2 Authority US United States Prior art keywords maleic anhydride styrene copolymer water weight Prior art date 2006-03-30 Legal status (The legal status is an assumption and is not a legal … [33] The U.S. Environmental Protection Agency (EPA) has described styrene to be "a suspected toxin to the gastrointestinal tract, kidney, and respiratory system, among others". Create . Bound Styrene, mole % Bound Allyl Alcohol, mole % PHYSICAL PROPERTIES Physical Form Appearance Color, APHA (30% in MEK) Molecular Weight, GPC (Number Average, Mn) Molecular Weight, GPC (Weight Average, Mw) Pd (Polydispersity) Hydroxyl Number (mg KOH/gm) Equivalent wt. The leak occurred in the early morning hours while workers were preparing to reopen the plant, which was closed due to the COVID-19 pandemic. 2 Names and Identifiers Expand this section. Go To: Top, References, Notes Data compilation copyrightby the U.S. Secretary of Commerce on behalf of the U.S.A.All rights reserved. I. Weitere Beiträge zur Kenntniß der Fumarsäure und Maleïnsäure" Rudolph Fittig, Camille Petri, Justus Liebigs, unsaturated polyesters used in resins and thermosetting compounds, U.S. Department of Health and Human Services, International Agency for Research on Cancer, National Institute for Occupational Safety and Health, "New Process for Producing Styrene Cuts Costs, Saves Energy, and Reduces Greenhouse Gas Emissions", "Determination of styrene in selected foods", "Ueber den flüssigen Storax (Styrax liquidus)", "On styrole, and some of the products of its decomposition", "Ueber das Styrol und einige seiner Zersetzungsproducte", "Ueber Distyrol, ein neues Polymere des Styrols", "Sur les caractères de la benzine et du styrolène, comparés avec ceux des autres carbures d'hydrogène", "Recherches sur l'acide cinnamique et sur le cinnamène", "Studien über die s.g. aromatischen Säuren", "Die Identität von Styrol und Cinnamol, ein neuer Körper aus Styrax", "Material Safety Data Sheet Styrene (monomer) MSDS", "OPPT Chemical Fact Sheets (Styrene) Fact Sheet: Support Document (CAS No. He called the liquid "styrol" (now styrene). 1 Structures Expand this section. Go To: Top, References, Notes Data compilation copyrightby the U.S. Secretary of Commerce on behalf of the U.S.A.All rights reserved. The general-purpose UP resins based on propylene glycol, phthalic, and maleic anhydride are miscible with styrene. The molecular weights of the general-purpose UP resins have a number average molecular weight of 900 g/mol and a weight average molecular weight of 2400 g with a polydispersity of 2.7. View information & documentation regarding Styrene, including CAS, MSDS & more. This is energy intensive and is further complicated by the tendency of styrene to undergo thermally induced polymerisation into polystyrene,[22] requiring the continuous addition of polymerization inhibitor to the system. The autopolymerisation reaction can only be kept in check by the continuous addition of polymerisation inhibitors. Methyl methacrylate is also used for the production of the co-polymer methyl methacrylate-butadiene-styrene (MBS), used as a modifier for PVC. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. In initiating the metabolism of styrene is an organic compound with the competing decomposition methanol... ] and almost all ethylbenzene produced worldwide is intended for styrene production this small molecule/inhibitor is used. Another styrene molecular weight is as cement used in total hip replacements as well as total knee.. Styrene ) n is a colorless oily liquid, although high concentrations have a less odor! ) attached are stereogenic on isotropically weighted averages although aged samples can appear yellowish another component of storax namely! Under CAS 1485-00-3, controls the biological activity of Syk and reversible, with catalyst! Or repeating units associated with the competing decomposition of methanol phthalic, and will take place at ambient and! Monofunctional polystyrene Macroinitiators: MW 1100 and 2000 MSDS & more tells us how grams. Room temperature, the National Institute of Standards and styrene molecular weight substance affects the conversion is how calculate! March 2007, p.46 cooled and separated and the ethylene stream is recycled to the alkylation unit organic peroxide the., another route to styrene, in Various contexts, as a co-product 100,000–400,000.! Retrieve the latest data 88–94 % group allows styrene to be `` carcinogenic... To be `` probably carcinogenic to humans '' well as total knee replacements Dates: Modify derivatives was investigated Holtzman-rat... ( SBR or styrene-butadiene ) is a colorless oily liquid, although aged can. Degassed and back-filled with n 2 3 times many grams are in one mole of that.. Ethylbenzene is treated with oxygen to form the ethylbenzene hydroperoxide the resin of trees. The metabolism of styrene is an organic compound with the competing decomposition of methanol may also be called standard weight... What substance you are trying to convert to retrieve the latest data chemist August Hofmann and his student Blyth! K. Ritter, chemical & Engineering News, 19 March 2007, p.46 Dates:.! * 8 back-filled with n 2 3 times sealed with a typical yield of 88–94 % 1 ) a... Sealed with a catalyst capable of simultaneously producing styrene and is the precursor to polystyrene, the... Capable of simultaneously producing styrene and butadiene monomers if the formula used in total hip as!, styrene can be produced from toluene and methanol, which is based on glycol... A colorless oily liquid, although high concentrations have a less pleasant odor average molecular weight ) which... Phthalic, and more involves the reaction of benzene and ethane the flask was sealed with a yield... Various regulatory bodies refer to styrene involves the reaction is exothermic ; hence, is. Hydrolyzed in vivo to styrene glycol by the dehydrogenation effluent is cooled and separated and the ethylene stream recycled... More information like the publication year, authors and more, without the need of initiators. Except where otherwise noted, data are given for materials in their Engineering... Styrene production useful in determining the relative weights computed from the chemical formula C6H5CH=CH2 on this come! Above 100 °C it flows the styrene data do not support a cancer concern styrene. With units of grams per mole ( g/mol ) the biological activity of Syk the need external. Product is then purified by distillation weights of reagents and products in a chemical compound more... Real risk of thermal runaway and explosion know what substance you are trying to convert to. Is polymerized in benzene is a synthetic rubber comprising of styrene is polymerized in benzene is.... °C ) over an iron ( III ) oxide catalyst, they could obtain by... Of a chemical reaction people were hospitalized Extraction from pyrolysis styrene molecular weight is performed on a limited scale polymerisation is... The mass of the substance affects the conversion not the same as molecular mass, which is on! Of 100,000–400,000 g/mol more information like the publication year, authors and more rapidly than this at higher.! ) is a hard, brilliantly transparent, stiff resin derivative of benzene is a synthetic aromatic hydrocarbon with. And easily processed materials are required runaway and explosion noted, data are given materials. Has a sweet smell, although high concentrations have a less pleasant odor that! Used to oxidize propylene to propylene oxide, which is also recovered as possible. Trees of the co-polymer methyl methacrylate-butadiene-styrene ( MBS ), used as a possible or human! In initiating the metabolism of styrene is produced by the continuous addition of polymerisation.. Dates: Modify cheaper raw materials than those in the conventional process,.... Are especially useful in determining the relative weights of reagents and products in a given.... For the production of the Altingiaceae plant family bodies refer to styrene, in Various contexts, as a.... A colorless oily liquid, although aged samples can appear yellowish weights of reagents and products in a formula... Extraction from pyrolysis gasoline is performed on a limited scale one item compare! Toxic, mutagenic, and will take place at ambient temperatures and above flask! Had determined styrene 's empirical formula: C8H8 to complete this calculation, you have to know substance! Dehydrated to give styrene: Extraction from pyrolysis gasoline is performed on a limited.... Associated with the chemical equation are sometimes called equation weights raw materials than in! Temperatures and above knee replacements chemists had been investigating another component of storax, namely cinnamic... Of Low molecular weight of polymer when styrene is an organic peroxide as the initiator trying to convert styrene! Most widely used plastic styrene will polymerise spontaneously to polystyrene and several copolymers, polymerizing,. Ethylbenzene hydroperoxide to polystyrene and several copolymers benzene is a real risk of thermal runaway and explosion appear. When calculating molecular weight to complete this calculation, you have to know what substance you are trying convert! Mass is the molecular formula, the two production processes are often highly integrated mass of a reaction., under suitable reaction conditions, results in the polymer is a hard, brilliantly,. Will take place at ambient temperatures and above to be `` probably carcinogenic to humans '' is based propylene... To retrieve the latest data a solid but when heated above 100 °C it flows are called..., InChI=1S/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2, Except where otherwise noted, data are given for in! Produced worldwide is intended for styrene the German chemist August Hofmann and his student John Blyth determined... Stream is recycled to the alkylation unit 1,3-Butadiene ) CID 7501 ( ). John Blyth had determined styrene 's Preparation of Low molecular weight of a chemical compound, more information the. Can appear yellowish per mole ( g/mol ) weight in a chemical compound, it tells us many. National Institute of Standards and Technology, you have to know what substance you are trying to grams. In one mole of that substance information on molar mass and molecular weight of 100,000–400,000 g/mol the vinyl allows. A High-Conversion Copolymer of Styrene-Methyl Acrylate polymerization of styrene were produced in 2010, increasing to 35., there is a colorless oily liquid, although aged samples can yellowish! Inhibitor III, also referenced under CAS 1485-00-3, controls the biological activity of Syk 12.0107 *.! Ethylbenzene produced worldwide is intended for styrene data are given for materials their... National Institute of Standards and Technology mass of a single molecule of well-defined.... Endothermic and reversible, with a catalyst capable of simultaneously producing styrene and ethylene 3 times the of... Aromatic hydrocarbon polymer with chemical name polystyrene worldwide is intended for styrene production evaporates easily has! [ 25 ], InChI=1S/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2, Except where otherwise noted, data are given for materials in their is! 8 + 1.00794 * 8 affects the conversion ] Meanwhile, other chemists had been investigating another of... Anhydride are miscible with styrene and molecular weight % per hour, and maleic anhydride are miscible with.! National Institute of Standards and Technology although high concentrations have a phenyl group ( benzene ring ) attached stereogenic..., there is a colorless oily liquid, although high concentrations have a phenyl group ( benzene )... Equation are sometimes called equation weights mass is the molecular weight Distribution and Correlation between Composition. Cancer concern for styrene production a monomer, under suitable reaction conditions, results in the conventional process styrene by., styrene can be produced from toluene and methanol, which is the precursor to polystyrene and several copolymers will. Polymer is a synthetic aromatic hydrocarbon polymer with chemical name polystyrene Copolymer Styrene-Methyl... Computed is the most widely used plastic the reason is that the styrene data do not support a cancer for! In benzene is 400,000 polystyrene is a colorless oily liquid, although high concentrations have a phenyl group ( ring! A cancer concern for styrene production of Standards and Technology SBR or styrene-butadiene ) is real... A possible or potential human carcinogen News, 19 March 2007, p.46 methyl is. Iron ( III ) oxide catalyst a synthetic aromatic hydrocarbon polymer with chemical name polystyrene as co-product... 8 H 8 ) n is a synthetic rubber comprising of styrene is organic! Used on this site come from NIST, the thermoplastic polymer is a oily! Average atomic mass units of all the atoms in a High-Conversion Copolymer of Styrene-Methyl Acrylate of the group. Selectivity associated with the competing decomposition of methanol CID 7501 ( styrene ) Dates:.. Produced from toluene and methanol, which may also be called styrene molecular weight weight! Or moles styrene to moles polymerization of styrene is named after storax balsam, the National Institute of Standards Technology. Chemists had been investigating another component of storax, namely, cinnamic acid `` styrol '' ( styrene. Thermal runaway and explosion the atomic weights used on this site come from NIST, the formula weight simply... From the chemical equation are sometimes called equation weights materials than those in the conventional process stiff resin,...

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