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Styrol Produkt Beschreibung

Styrene Struktur
100-42-5
CAS-Nr.
100-42-5
Bezeichnung:
Styrol
Englisch Name:
Styrene
Synonyma:
SM;Styren;Styron;SYRENE;STYROL;Styreen;Stirolo;Styrole;Sryrene;Styrene
CBNumber:
CB3415111
Summenformel:
C8H8
Molgewicht:
104.15
MOL-Datei:
100-42-5.mol

Styrol Eigenschaften

Schmelzpunkt:
-31 °C
Siedepunkt:
145-146 °C(lit.)
Dichte
0.906 g/mL at 20 °C
Dampfdichte
3.6 (vs air)
Dampfdruck
12.4 mm Hg ( 37.7 °C)
Brechungsindex
n20/D 1.546(lit.)
Flammpunkt:
88 °F
storage temp. 
2-8°C
Löslichkeit
0.24g/l
Aggregatzustand
Liquid
pka
>14 (Schwarzenbach et al., 1993)
Wichte
0.909
Farbe
Colorless
Explosionsgrenze
1.1-8.9%(V)
Wasserlöslichkeit
0.3 g/L (20 ºC)
FreezingPoint 
-30.6℃
Sensitive 
Air Sensitive
Merck 
14,8860
BRN 
1071236
Henry's Law Constant
(x 10-3 atm?m3/mol): 3.91 at 25 °C (static headspace-GC, Welke et al., 1998)
Expositionsgrenzwerte
TLV-TWA 50 ppm (~212 mg/m3) (ACGIH and NIOSH), 100 ppm (~425 mg/m3) (OSHA and MSHA); ceiling 200 ppm, peak 600 ppm/5 min/3 h (OSHA); STEL 100 ppm (~425 mg/m3) (ACGIH).
Stabilität:
Stable, but may polymerize upon exposure to light. Normally shipped with a dissolved inhibitor. Substances to be avoided include strong acids, aluminium chloride, strong oxidizing agents, copper, copper alloys, metallic salts, polymerization catalysts and accelerators. Flammable - vapour may travel considerable distance to ignition source
InChIKey
PPBRXRYQALVLMV-UHFFFAOYSA-N
CAS Datenbank
100-42-5(CAS DataBase Reference)
NIST chemische Informationen
Styrene(100-42-5)
EPA chemische Informationen
Benzene, ethenyl-(100-42-5)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher Xn,T,F
R-Sätze: 10-20-36/38-40-36/37/38-39/23/24/25-23/24/25-11-48/20-63
S-Sätze: 23-36-26-16-45-36/37-7-46
RIDADR  UN 2055 3/PG 3
WGK Germany  2
RTECS-Nr. WL3675000
Selbstentzündungstemperatur 914 °F
TSCA  Yes
HS Code  2902 50 00
HazardClass  3
PackingGroup  III
Giftige Stoffe Daten 100-42-5(Hazardous Substances Data)
Toxizität LD50 in mice (mg/kg): 660 ± 44.3 i.p.; 90 ± 5.2 i.v.
Bildanzeige (GHS)
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H225 Flüssigkeit und Dampf leicht entzündbar. Entzündbare Flüssigkeiten Kategorie 2 Achtung P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H226 Flüssigkeit und Dampf entzündbar. Entzündbare Flüssigkeiten Kategorie 3 Warnung
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung P264, P280, P302+P352, P321,P332+P313, P362
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung P264, P280, P305+P351+P338,P337+P313P
H332 Gesundheitsschädlich bei Einatmen. Akute Toxizität inhalativ Kategorie 4 Warnung P261, P271, P304+P340, P312
H361 Kann vermutlich die Fruchtbarkeit beeinträchtigen oder das Kind im Mutterleib schädigen. Reproduktionstoxizität Kategorie 2 Warnung P201, P202, P281, P308+P313, P405,P501
H370 Schädigt die Organe. Spezifische Zielorgan-Toxizität (einmalige Exposition) Kategorie 1 Achtung P260, P264, P270, P307+P311, P321,P405, P501
H372 Schädigt bei Hautkontakt und Verschlucken die Organe bei längerer oder wiederholter Exposition. Spezifische Zielorgan-Toxizität (wiederholte Exposition) Kategorie 1 Achtung P260, P264, P270, P314, P501
Sicherheit
P201 Vor Gebrauch besondere Anweisungen einholen.
P210 Von Hitze, heißen Oberflächen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.
P260 Dampf/Aerosol/Nebel nicht einatmen.
P261 Einatmen von Staub vermeiden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P311 GIFTINFORMATIONSZENTRUM/Arzt anrufen.
P301+P310 BEI VERSCHLUCKEN: Sofort GIFTINFORMATIONSZENTRUM/Arzt/... (geeignete Stelle für medizinische Notfallversorgung vom Hersteller/Lieferanten anzugeben) anrufen.
P303+P361+P353 BEI BERÜHRUNG MIT DER HAUT (oder dem Haar): Alle kontaminierten Kleidungsstücke sofort ausziehen. Haut mit Wasser abwaschen oder duschen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.
P308+P313 BEI Exposition oder falls betroffen: Ärztlichen Rat einholen/ärztliche Hilfe hinzuziehen.
P405 Unter Verschluss aufbewahren.

Styrol Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

FARBLOSE BIS GELBE öLIGE FLüSSIGKEIT.

CHEMISCHE GEFAHREN

Bildung explosionsfähiger Peroxide. Polymerisation kann beim Erwärmen, unter Einfluss von Licht, Oxidationsmitteln, Sauerstoff und Peroxiden Feuer- und Explosionsgefahrverursachen. Reagiert heftig mit starken Säurenund starken Oxidationsmitteln unter Feuer- und Explosionsgefahr. Greift Gummi, Kupfer und Kupferlegierungen an.

ARBEITSPLATZGRENZWERTE

TLV: 20 ppm (als TWA); 40 ppm (als STEL); Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); BEI vorhanden (ACGIH 2005).
MAK: 20 ppm, 86 mg/m? Spitzenbegrenzung: überschreitungsfaktor II(2); Krebserzeugend Kategorie 5; Schwangerschaft: Gruppe C; BAT vorhanden; (DFG 2006).

AUFNAHMEWEGE

Aufnahme in den Körper durch Inhalation der Dämpfe.

INHALATIONSGEFAHREN

Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Augen, die Haut und die Atemwege. Verschlucken der Flüssigkeit kann zur Aufnahme in der Lunge führen; Gefahr der Aspirationspneumonie. Möglich sind Auswirkungen aufdas Zentralnervensystem. Exposition in hohen Konzentrationenkann zu Bewusstlosigkeit führen.

WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

Die Flüssigkeit entfettet die Haut. Möglich sind Auswirkungen auf das Zentralnervensystem. Exposition kann durch Lärm verursachte Gehörschäden verstärken. Möglicherweise krebserzeugend für den Menschen. (Siehe ANMERKUNGEN.)

LECKAGE

Zündquellen entfernen. Persönliche Schutzausrüstung: Chemikalienschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät. NICHT in die Umwelt gelangen lassen. NICHT in die Kanalisation spülen. Ausgelaufene Flüssigkeit in abgedeckten Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen.

R-Sätze Betriebsanweisung:

R10:Entzündlich.
R20:Gesundheitsschädlich beim Einatmen.
R36/38:Reizt die Augen und die Haut.
R40:Verdacht auf krebserzeugende Wirkung.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
R11:Leichtentzündlich.

S-Sätze Betriebsanweisung:

S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S7:Behälter dicht geschlossen halten.

Aussehen Eigenschaften

C8H8; Phenylethylen, Vinylbenzol. Farblose Flüssigkeit mit süßlichem Geruch, stabilisiert mit 4-tert-Butylbrenzkatechin.

Gefahren für Mensch und Umwelt

Gesundheitsschädlich beim Einatmen. Reizt die Augen und die Haut.
Nicht zu stark erhitzen. Nicht mit Polymerisationsinitiatoren und Säuren in Berührung bringen. Bildet mit Sauerstoff Peroxide. Entzündlich.
LD50 (oral, Ratte): 5000 mg/kg.

Schutzmaßnahmen und Verhaltensregeln

Vor Gebrauch auf Peroxide testen, und ggf. entsprechend behandeln.
Schutzhandschuhe als kurzzeitiger Spritzschutz.

Verhalten im Gefahrfall

Mit flüssigkeitsbindendem Material, z.B. Rench Rapid aufnehmen. Der Entsorgung zuführen. Nachreinigen.
Kohlendioxid, Schaum, Pulver.
Brennbar. Dämpfe schwerer als Luft. Mit Luft Bildung explosionsfähiger Gemische.

Erste Hilfe

Nach Hautkontakt: Mit reichlich Wasser abwaschen.
Nach Augenkontakt: Mit reichlich Wasser bei geöffnetem Lidspalt mindestens 15 Minuten ausspülen. Sofort Augenarzt hinzuziehen.
Nach Einatmen: Frischluft.
Nach Verschlucken: Reichlich Wasser trinken lassen. Erbrechen auslösen. Arzt hinzuziehen.
Nach Kleidungskontakt: Kontaminierte Kleidung entfernen.
Ersthelfer: siehe gesonderten Anschlag

Sachgerechte Entsorgung

Als halogenfreie, organische Lösemittelabfälle.

Beschreibung

Styrene is a clear, colorless, flammable liquid with a sweet smell that is used in thousands of products. Styrene occurs naturally in plants. It was first isolated from a resin called storax obtained from the inner bark of the Oriental sweet gum tree (Liquidambar orientalis) by Bonastre. In 1839, the German apothecary Eduard Simon prepared styrene by distilling it from storax and called it styrol. Simon observed it solidifi ed into a rubbery substance after being stored and believed it had oxidized into styrol oxide. Subsequent analysis showed the solid did not contain oxygen and it was renamed metastyrol. This was the first written record of polymerization in chemistry. In 1845, the English chemist, John Blyth, and the German chemist, August Wilhelm von Hofmann (1818 1892), observed that styrene was converted to polystyrene by sunlight and that styrene could be polymerized to polystyrene by heating in the absence of oxygen. It took another 70 years for the polymerization of styrene to be described by Hermann Staudinger (1881 1965) in the 1920s. This laid the foundation for the commercial polystyrene industry that developed in the 1930s.

Chemische Eigenschaften

Styrene is a colorless or yellow, sweet odor liquid. It is produced during alkylation of benzene with ethylene. It is highly reactive and polymerizes rapidly with a violent explosive reaction. This demands proper handling, transportation, and storage by adding polymerization inhibitors in adequate quantities during these operations. Styrene monomer has been extensively used in the manufacture of chemical intermediates, fi lling components, plastics, resins, and stabilizing agents.

Chemische Eigenschaften

Styrene is a colorless to yellowish, very refractive, oily liquid with a penetrating odor

Chemische Eigenschaften

colourless oily liquid

Chemische Eigenschaften

Styrene has a characteristic, sweet, balsamic, almost floral odor that is extremely penetrating

Physikalische Eigenschaften

Clear, colorless, watery liquid with a penetrating or pungent rubber-like odor. Becomes yellow to yellowish-brown on exposure to air. Experimentally determined odor threshold concentrations in air for inhibited and unhibited styrene were 0.1 and 0.047 ppmv, respectively (Leonardos et al., 1969). Experimentally determined detection and recognition odor threshold concentrations were 220–640 μg/m3 (52–150 ppbv) and 64 μg/m3 (15 ppbv), respectively (Hellman and Small, 1974). At 40 °C, the average odor threshold concentration and the lowest concentration at which an odor was detected were 65 and 37 μg/L, respectively. At 25 °C, the lowest concentration at which a taste was detected was 94 μg/L, respectively (Young et al., 1996). The average least detectable odor threshold concentrations in water at 60 °C and in air at 40 °C were 3.6 and 120 μg/L, respectively (Alexander et al., 1982).

Occurrence

Reported found in cranberry and bilberry, currants, grape, parsley, milk and dairy products, whiskey, cocoa, coffee, tea, roasted filberts and roasted peanuts. Also reported found in fresh apple, guava fruit, pineapple, vinegar, butter, fish oil, black tea, roasted filbert, roasted peanut, soybean, plum brandy, apple brandy, Brazil nut, rice bran, Bourbon vanilla, grapes, peach, strawberry, onion, peas, bell pepper, cassia leaf, cheeses, parsley, milk, boiled and scrambled egg, lean fish, fish oil, cooked chicken and beef, rum, malt and Scotch whiskey, cider, grape, wine, cocoa, coffee, honey, cloudberry, plum, rose apple, beans, trassi, walnut, buckwheat, soursop, watercress, kiwifruit, wild rice, sapodilla fruit, nectarine, okra, crab, crayfish and pawpaw.

History

During the early 1940s, the development of cellular polystyrene took place. Styrofoam was discovered accidentally by Ray McIntire (1918 1996), a Dow chemical engineer in 1944. McIntire was trying to make an artificial rubber for electrical insulation. He was combining isobutene with polystyrene when the isobutene formed bubbles in the styrene, resulting in a light cellular structure. Dow registered the trademark Styrofoam in 1954, but the name is now used generically for foam cellular insulation. World demand for styrene monomer in 2006 is approximately 25 million tons. Styrene has numerous uses. The homopolymer, which is hard and clear, is used for plastic eating utensils, CD/DVD cases, and plastic hobby models. The most common forms of polystyrene is expanded polystyrene (EPS) and extruded expanded polystyrene (XEPS). EPS is produced using a mixture of polystyrene beads, pentane, and a blowing agent. The mixture is heated with steam, causing the beads to expand to 10 to 100 times their original volume as the pentane vaporizes. After this, the mixture is injected into a vacuum mold where heat and a partial vacuum cause further expansion. EPS can be molded into a variety of shapes. The pentane in the foam is replaced by air during the curing process. Extruded expanded polystyrene starts with polystyrene crystals. The crystals are mixed with additives and blowing agents in an extruder. In the extruder, the mix is heated under pressure into a plastic melt. This plastic melt expands through a die into foam. Extruded expanded polystyrene cannot be molded but is produced in sheets. At one time chlorofl uorocarbons (CFC) were the preferred blowing agents used to produce expanded polystyrenes, but they have been replaced by hydrochlorofl uorocarbons because of concerns about CFC's impact on the ozone layer (see Dichlorodifl uoromethane). Styrofoam, produced by Dow, is extruded. Coff ee cups and food packaging are technically not Styrofoam because Dow does not produce Styrofoam as molded expanded polystyrene. EPS and XEPS are used extensively for insulation in the construction industry. Polystyrene is used as a co-polymer with a number of other materials. Examples of co-polymers are acrylonitrile-butadiene-styrene, styrene-acrylonitrile, and styrene-butadiene rubber. Polystyrene is used in paints, coatings, adhesives, and resins.

Verwenden

Styrene polymers and copolymers are usedextensively in making polystyrene plastics,polyesters, protective coatings, resins, andsynthetic rubber (styrene–butadiene rubber)..

Verwenden

Used in the manufacturing plastics; synthetic rubber; resins; insulator.

Definition

ChEBI: A vinylarene that is benzene carrying a vinyl group. It has been isolated from the benzoin resin produced by Styrax species.

Vorbereitung Methode

Styrene is made by dehydrogenation of ethylbenzene at high temperature using metal catalysts: C6H5CH2CH2(g)→ C6H5CH = CH2(g) + H2(g). This is called the EB/SM (ethylbenzene/styrene monomer) process. Styrene can also be made by PO/SM (propylene oxide/styrene monomer) process). This process starts by oxidizing ethylbenzene (C6H5CH2CH2) to its hydroperoxide (C6H5CH(OOH)CH3), which is then used to oxidize propylene (CH3CH = CH2) to produce propylene oxide (CH3CH2CHO) and phenylethanol (C6H5CH(OH)CH3). The phenylethanol is then dehydrated to give styrene and water. Styrene can also be synthesized by reacting benzene and ethylene or natural gas.

Definition

A liquid hydrocarbon used as the starting material for the production of polystyrene. The manufacture of phenylethene is by dehydrogenation of ethyl benzene:
C6H5C2H5 → C6H5CH:CH2+H2.

synthetische

Prepared from ethylbenzene or from phenylethanol.

Aroma threshold values

Detection: 3.6 to 80 ppb

Allgemeine Beschreibung

A clear colorless to dark liquid with an aromatic odor. Flash point 90°F. Density 7.6 lb/gal. Vapors heavier than air and irritating to the eyes and mucous membranes. Subject to polymerization. If the polymerization takes place inside a closed container, the container may rupture violently. Less dense than water and insoluble in water. Used to make plastics, paints, and synthetic rubber.

Air & Water Reaktionen

Highly flammable. Insoluble in water.

Reaktivität anzeigen

STYRENE MONOMER is a colorless, oily liquid, moderately toxic, flammable. A storage hazard above 32°C, involved in several industrial explosions caused by violent, exothermic polymerization [Bond, J., Loss Prev. Bull., 1985, (065), p. 25]. Polymerization becomes self-sustaining above 95°C [MCA SD-37, 1971]. Presence of an inhibitor lessens but does not eliminate the possibility of unwanted polymerization. Violent polymerization leading to explosion may be initiated by peroxides (e.g., di-tert-butyl peroxide, dibenzoyl peroxide), butyllithium, azoisobutyronitrile. Reacts violently with strong acids (sulfuric acid, oleum, chlorosulfonic acid), strong oxidizing agents [Lewis, 3rd ed., 1993, p. 1185]. Reacts with oxygen above 40°C to form explosive peroxide [Barnes, C. E. et al., J. Amer. Chem. Soc., 1950, 72, p. 210]. Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick 1979 p.151-154, 164]. Mixing styrene in equal molar portions with any of the following substances in a closed container caused the temperature and pressure to increase: chlorosulfonic acid, oleum, and sulfuric acid [NFPA 1991].

Hazard

Flammable, moderate fire risk, explosive limits in air 1.1–6.1%, must be inhibited during storage. Toxic by ingestion and inhalation. Central nervous system impairment, upper respiratory tract irritant, and peripheral neuropathy. Possible carcinogen.

Health Hazard

Exposures to styrene induce adverse health effects, which include irritation to the eyes, mucous membrane, loss of appetite, vomiting, and nausea. Prolonged exposure results in skin damage in the form of dermatitis, rough, and fi ssured skin.

Health Hazard

Like all other aromatic hydrocarbons, styreneis an irritant to skin, eyes, and mucous membranes and is narcotic at high concentrations.Exposure to its vapors may cause drowsiness,nausea, headache, fatigues, and dizziness inhumans (Hamilton and Hardy 1974). Inhalation of 10,000 ppm for 30–60 minutes maybe fatal to humans.
Absorption of styrene by inhalation isthe major path of absorption into the body.Skin absorption of the liquid is also significant. According to an estimate, contactwith styrene-saturated water for an hour orbrief contact with the liquid may result inabsorption equivalent to 8 hours of inhalationof 12 ppm (Dutkiewicz and Tyras 1968). Itmay accumulate in the body due to its highsolubility in fat. This would happen whenthe metabolic pathway becomes saturated atexposure concentrations of 200 ppm (ACGIH 1986). Mandelic acid and benzoylformic acidare the major urinary metabolites. However,the excretion of mandelic acid was less whenstyrene was absorbed through the skin.
Styrene tested positive in an EPA mutagenicity study. It tested positive in a histidine reversion–Ames test, Saccharomycescerevisiae gene conversion, in vitro humanlymphocyte micronucleus, and Drosophilamelanogaster sex-linked lethal tests (NIOSH1986). Carcinogenicity of styrene in humansis not known. There is limited evidence of carcinogenicity in animals for both the monomerand the polymer..

Health Hazard

Moderate irritation of eyes and skin. High vapor concentrations cause dizziness, drunkeness, and anesthesia.

Brandgefahr

Behavior in Fire: Vapor is heavier than air and may travel considerable distance to a source of ignition and flash back. At elevated temperatures such as in fire conditions, polymerization may take place which may lead to container explosion.

Kontakt-Allergie

The presence of styrene in packaged foods is due primarily to leaching of monomer from polystyrene containers. Polystyrene (PS) is widely used in the manufacturing of food contact materials such as trays for meat, cookies, and candies with disposable plates, cups, etc. and about 50 % of the consumption of PS was related to food packaging and food service articles. During the production process the styrene monomer can become occluded in PS products and may migrate out of these materials into food. The rate of migration of styrene monomer from polystyrene containers depends mainly on the lipophilicity of the food, surface area of the container per volume of food, duration of contact, and food temperature.
Styrene was found in 24 food contact materials from different categories (extruded polystyrene foam, expandable polystyrene, high-impacted polystyrene) at concentrations ranging from 9.3 to 3100 mg/kg, with a mean concentration of 340 mg/kg. This concentration is below the USFDA limit for styrene in food packaging materials which are 5000 mg/kg for fatty foods and 10000 mg/kg for aqueous foods. Moreover, styrene dimers and trimers, which are also residual materials produced during polymerisation, have been detected. Styrene was found in various foods such as yoghurt, croissants, cookies, raw chicken, and raw beef held in contact with PS packaging (meat trays, cookie trays, and chocolate candy trays) at concentrations ranging from 2.6 ng/g in raw chicken to 163 ng/g in sandwich cookies. Styrene is reasonably anticipated to be a human carcinogen. Several international brands start to phase out polystyrene foam packaging from their products.

Sicherheitsprofil

Confirmed carcinogen. Experimental poison by ingestion, inhalation, and intravenous routes. Moderately toxic experimentally by intraperitoneal route. Mildly toxic to humans by inhalation. An experimental teratogen. Human systemic effects by inhalation: eye and olfactory changes. It can cause irritation and violent itching of the eyes @200 ppm, lachrymation, and severe human eye injuries. Its toxic effects are usually transient and result in irritation and possible narcosis. Experimental reproductive effects. Human mutation data reported. A human skin irritant. An experimental skin and eye irritant. The monomer has been involved in several industrial explosions. It is a storage hazard above 32°C. A very dangerous fire hazard when exposed to flame, heat, or oxidants. Explosive in the form of vapor when exposed to heat or flame. Reacts with oxygen above 40°C to form a heat-sensitive explosive peroxide. Violent or explosive polymerization may be initiated by alkahmetal-graphite composites, butyllithium, dibenzoyl peroxide, other initiators (e.g., azoisobutyronitrile, di-tert-butyl peroxide). Reacts violently with chlorosulfonic acid, oleum, sulfuric acid, chlorine + iron(IⅡ) chloride (above 50°C). May ignite when heated with air + polymerizing polystyrene. Can react vigorously with oxidizing materials. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes

mögliche Exposition

Styrene is used in the production of plastics and polystyrene resins. It is also used in combination with 1,3-butadiene or acrylonitrile to form copolymer elastomers, butadiene-styrene rubber; and acrylonitrilebutadiene-styrene. It is also used in the manufacture of protective coatings; resins, polyesters; in making insulators and in drug manufacture.

Carcinogenicity

Styrene is reasonably anticipated to be a human carcinogen based on limited evidence of carcinogenicity from studies in humans, sufficient evidence of carcinogenicity from studies in experimental animals, and supporting data on mechanisms of carcinogenesis.

Source

Based on laboratory analysis of 7 coal tar samples, styrene concentrations ranged from ND to 2,500 ppm (EPRI, 1990). A high-temperature coal tar contained styrene at an average concentration of 0.02 wt % (McNeil, 1983).
Styrene occurs naturally in benzoin, rosemary, sweetgum, cassia, Oriental styrax, and Peru balsam (Duke, 1992). Identified as one of 140 volatile constituents in used soybean oils collected from a processing plant that fried various beef, chicken, and veal products (Takeoka et al., 1996).
Drinking water standard (final): MCLG: 0.1 mg/L; MCL: 0.1 mg/L. In addition, a DWEL of 7 mg/L was recommended (U.S. EPA, 2000).

Environmental Fate

Biological. Fu and Alexander (1992) observed that despite the high degree of adsorption onto soils, styrene was mineralized to carbon dioxide under aerobic conditions. Rates of mineralization from highest to lowest were sewage sludge, Lima soil (pH 7.23, 7.5% organic matter), groundwater (pH 8.25, 30.5 mg/L organic matter), Beebe Lake water from Ithaca, NY (pH 7.5, 50 to 60 mg/L organic matter), aquifer sand (pH 6.95, 0.4% organic matter), Erie silt loam (pH 4.87, 5.74% organic matter). Styrene did not mineralize in sterile environmental samples. Oié et al. (1979) reported BOD and COD values of 1.29 and 2.80 g/g using filtered effluent from a biological sanitary waste treatment plant. These values were determined using a standard dilution method at 20 °C and stirred for a period of 5 d. When a sewage seed was used in a separate screening test, a BOD value of 2.45 g/g was obtained. The ThOD for styrene is 3.08 g/g. Photolytic. Irradiation of styrene in solution forms polystyrene. In a benzene solution, irradiation of polystyrene will result in depolymerization to presumably styrene (Calvert and Pitts, 1966).
Atkinson (1985) reported a photooxidation reaction rate of 5.25 x 10-11 cm3/molecule?sec for styrene and OH radicals in the atmosphere. A reaction rate of 1.8 x 10-4 L/molecule?sec at 303 K was reported for the reaction of styrene and ozone in the vapor phase (Bufalini and Altshuller, 1965).
Chemical/Physical. In the dark, styrene reacted with ozone forming benzaldehyde, formaldehyde, benzoic acid, and trace amounts of formic acid (Grosjean, 1985). Polymerizes readily in the presence of heat, light, or a peroxide catalyst. Polymerization is exothermic and may become explosive (NIOSH, 1997).

Lager

Styrene is stored in a flammable liquid storagecabinet, separated from oxidizing substances An inhibitor such as 4-tert-butylcatechol intrace amounts is added to the monomer toprevent polymerization. It is shipped in glassbottles, metal cans, drums, and tank cars.

Versand/Shipping

UN2055 Styrene monomer, stabilized, Hazard Class: 3; Labels: 3-Flammable liquid.

läuterung methode

Styrene is difficult to purify and keep pure. 25 1.5441. Usually it contains added inhibitors (such as a trace of hydroquinone). Wash it with aqueous NaOH to remove inhibitors (e.g. tert-butanol), then with water, dry it for several hours with MgSO4 and distil it at 25o under reduced pressure in the presence of an inhibitor (such as 0.005% p-tert-butylcatechol). It can be stored at -78o. It can also be stored and kept anhydrous with Linde type 5A molecular sieves, CaH2, CaSO4, BaO or sodium, being fractionally distilled, and distilled in a vacuum line just before use. Alternatively styrene (and its deuterated derivative) are passed through a neutral alumina column before use [Woon et al. J Am Chem Soc 108 7990 1986, Collman J Am Chem Soc 108 2588 1986]. [Beilstein 5 IV 1334.]

Inkompatibilitäten

Styrene May form explosive mixture with air. A storage hazard above 31C. Upon heating to 200C, styrene polymerizes to form polystyrene, a plastic. Before entering confined space where this chemical may be present, check to make sure that an explosive concentration does not exist. Store in a cool, dry area away from oxidizers, catalysts for vinyl polymers; peroxides, strong acids; aluminum chloride. May polymerize if contaminated, subjected to heat; under the influence of light; and on contact with many compounds, such as oxygen, oxidizing agents; peroxides and strong acids. Usually contains an inhibitor, such as tert-butylcatechol. Corrodes copper and copper alloys. Attacks some plastics, rubber, and coatings.

Waste disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed. In some cases, recovery and recycle of styrene monomer is economic and the technology is available.

Verordnung (Regulations)

Coast Guard, Department of Homeland Security
46 CFR 150 and 151 detail procedures for shipping styrene monomer and for shipping styrene monomer and various styrene co-polymers with incompatible mixtures.
Department of Transportation (DOT)
Styrene is considered a hazardous material, and special requirements have been set for marking, labeling, and transporting this material.
Environmental Protection Agency (EPA)
Clean Air Act
Mobile Source Air Toxics: Listed as a mobile source air toxic for which regulations are to be developed.
National Emissions Standards for Hazardous Air Pollutants: Listed as a hazardous air pollutant.
New Source Performance Standards: Manufacture of styrene is subject to certain provisions for the control of volatile organic compound emissions.
Clean Water Act
Designated a hazardous substance.
Comprehensive Environmental Response, Compensation, and Liability Act
Reportable quantity (RQ) = 1,000 lb.
Emergency Planning and Community Right-To-Know Act
Toxics Release Inventory: Listed substance subject to reporting requirements.
Safe Drinking Water Act
Maximum contaminant level (MCL) = 0.1 mg/L.

Styrol Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Styrol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 250)Lieferanten
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32447 55
Hebei Chisure Biotechnology Co., Ltd.
+8613292890173
0311 66567340 luna@speedgainpharma.com CHINA 1017 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 30002 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 sales@jushengtech.com CHINA 28236 58
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093 export@haihangchem.com CHINA 8921 58
QUALITY CONTROL CHEMICALS INC.
(323) 306-3136
(626) 453-0409 orders@qcchemical.com United States 8407 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930501651
breeduan@crovellbio.com CHINA 2314 58
Cangzhou Wanyou New Material Technology Co.,Ltd
18631714998
sales@czwytech.com CHINA 913 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 sales@guangaobio.com CHINA 23049 58
Shandong chuangyingchemical Co., Ltd.
13156170209
sale@chuangyingchem.com CHINA 4405 58

100-42-5(Styrol)Verwandte Suche:


  • femanumber3234.
  • NCI-C02200
  • Phenethylene
  • Phenylethene
  • Phenylethylen
  • phenyl-ethylen
  • Phenylthylene
  • Stirolo
  • Styreen
  • Styren
  • styren(czech)
  • styrene(non-specificname)
  • styrenemonomer,inhibited
  • Styrol (German)
  • Styrole
  • Styrolene
  • Styron
  • Styropol
  • Styropol SO
  • Styropor
  • Vinylbenzen
  • vinyl-benzen
  • vinylbenzen(czech)
  • Vinylbenzol
  • Phenylethytene
  • styrene monomer stab.
  • STYRENE MONOMER ( SM )
  • STORAX BP
  • Sryrene
  • STYRENE OEKANAL, STABILIZED, 250 MG
  • STYRENE, REAGENTPLUS, >=99%
  • STYRENE, REAGENTPLUS, >= 99%
  • STYRENE 99+%
  • STYRENE REAGENTPLUS(TM) 99%
  • STYRENE 1 GRAM NEAT
  • STYRENE 1X1ML MEOH 5000UG/ML
  • STYRENE, 1X1ML, MEOH, 200UG/ML
  • POLYSTYRENE, MONOCARBOXY TERMINATED, AVE RAGE MW CA. 200,000 (GPC)
  • STYRENE NEAT STANDARD FOR EPA METHODS
  • STYRENE STANDARD FOR EPA METHODS*5000 UG/ML
  • STYRENE GC STANDARD
  • StyreneMonomer10-15Ppm&50Ppm
  • Styrene, stabilized, extra pure, 99%
  • Styrene, stabilized, for analysis, 99.5%
  • styrene,ethenylbenzene,phenylethylene
  • styrene solution
  • STYRENE,REAGENT
  • Styrene Odor Standard
  • STYRENE , STABILIZED WITH 10-15PPM 4-T-BUTYLCATECHOL
  • SYRENE
  • methyl 2-methylprop-2-enoate
  • Styrene, 99.5% stab. with 4-tert-butylcatechol
  • Styrene, 99.5%, stabilized with HQ
  • Styrene, stabilized with HQ
  • Styrene, 99.5%, stabilized with HQ, 99.5%
  • Styrene ReagentPlus(R), contains 4-tert-butylcatechol as stabilizer, >=99%
  • Phenylethytene Ethenylbenzene Styrol Vinyl benzene
  • Styrene, Stabilized
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