Methylacrylat

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Achtung

• Gefahrenhinweise

  H225：Flüssigkeit und Dampf leicht entzündbar.

  H315：Verursacht Hautreizungen.

  H317：Kann allergische Hautreaktionen verursachen.

  H319：Verursacht schwere Augenreizung.

  H331：Giftig bei Einatmen.

  H335：Kann die Atemwege reizen.

  H412：Schädlich für Wasserorganismen, mit langfristiger Wirkung.

• Sicherheit

  P210：Von Hitze, heißen Oberflächen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.

  P273：Freisetzung in die Umwelt vermeiden.

  P280：Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.

  P301+P312：BEI VERSCHLUCKEN: Bei Unwohlsein 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.

Methyl acrylate Chemische Eigenschaften,Einsatz,Produktion Methoden

• ERSCHEINUNGSBILD

  FARBLOSE FLüSSIGKEIT MIT STECHENDEM GERUCH.

• PHYSIKALISCHE GEFAHREN

  Die Dämpfe sind schwerer als Luft. Sie können sich am Boden ausbreiten. Fernzündung möglich. Die Dämpfe sind nicht stabilisiert. Sie können polymerisieren und Lüftungsöffnungen blockieren.

• CHEMISCHE GEFAHREN

  Kann spontan polymerisieren beim Erwärmen, unter Einfluss von Licht und bei Kontakt mit Peroxiden. Reagiert sehr heftig mit starken Säuren, starken Basenund starken Oxidationsmitteln unter Feuer- und Explosionsgefahr.

• ARBEITSPLATZGRENZWERTE

  TLV: 2 ppm (als TWA); Hautresorption; Sensibilisierung; Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); (ACGIH 2005).
  MAK: 5 ppm, 18 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(1); Sensibilisierung der Haut; Schwangerschaft: Gruppe D (DFG 2006).
  

• AUFNAHMEWEGE

  Aufnahme in den Körper durch Inhalation, über die Haut und durch Verschlucken.

• INHALATIONSGEFAHREN

  Beim Verdampfen bei 20°C kann sehr schnell eine gesundheitsschädliche Kontamination der Luft eintreten.

• WIRKUNGEN BEI KURZZEITEXPOSITION

  WIRKUNGEN BEI KURZZEITEXPOSITION:
  Die Substanz reizt die Haut und die Atemwege, und reizt stark die Augen.

• WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

  Wiederholter oder andauernder Kontakt kann zu Hautsensibilisierung führen.

• LECKAGE

  Zündquellen entfernen. Ausgelaufene Flüssigkeit in abgedeckten Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. NICHT in die Umwelt gelangen lassen. Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe. Chemikalienschutzanzug.

• R-Sätze Betriebsanweisung:

  R11:Leichtentzündlich.
  R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
  R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
  R43:Sensibilisierung durch Hautkontakt möglich.

• S-Sätze Betriebsanweisung:

  S9:Behälter an einem gut gelüfteten Ort aufbewahren.
  S25:Berührung mit den Augen vermeiden.
  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
  S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
  S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
  S43:Zum Löschen . . . (vom Hersteller anzugeben) verwenden (wenn Wasser die Gefahr erhöht, anfügen: "Kein Wasser verwenden").

• Beschreibung

  Methyl acrylate is an organic compound with the formula CH₂CHCO₂CH₃. It is the methyl ester of acrylic acid. It is a colourless liquid with a characteristic acrid odor. It is mainly produced to make acrylate fiber, which is used to weave synthetic carpets. It is also a reagent in the synthesis of various pharmaceutical intermediates.

• Chemische Eigenschaften

  Methyl acrylate is a clear, colorless, corrosive liquid with a sharp, fruity odor. It is soluble in water and completely miscible with most organic solvents.
  
  Methyl acrylate has a variety of industrial uses. the more important commercial uses of methyl acrylate include the preparation of thermoplastic coatings, use in the manufacture of acrylic and modacrylic fibers. In the fiber application, methyl acrylate is used as a comonomer with acrylonitrile. These acrylic fibers usually contain about 85% acrylonitrile and are used to fabricate clothing, blankets, carpets, and curtains. Other uses of methyl acrylate include coatings, adhesives, textile backcoatings, elastomers, plastics, and it is also found in ionic exchange resins, barrier film resins, antioxidant intermediates and acrylic fibers.

• Physikalische Eigenschaften

  Clear, colorless, flammable liquid with a heavy, sweet, pungent odor. An odor threshold concentration of 3.5 ppb_v was reported by Nagata and Takeuchi (1990).

• Verwenden

  Methyl acrylate is a monomer used in the manufacture of acrylic fibers, plastic films, textiles, papercoatings, and other acrylate ester resins. It is also used in amphoteric surfactants.

• synthetische

  Acrylate esters can be produced in a number of ways. The most commonly used method, developed in 1970, involves a propylene oxidation process. The reaction occurs initially with the oxidation of propylene to acrolein, which in turn is oxidized to acrylic acid. Once the acrylic acid is formed, it is reacted with methanol which causes the formation of the methyl acrylate. This reaction is shown as follows:
  
  An older method, the Reppe process, involves reacting acetylene with nickel carbonyl and methyl alcohol in the presence of an acid to produce methyl acrylate.
  More recent methods for producing acrylate esters involve the use of organic carbonates as esterifying agents or isolating 2-halo- 1-alkenes from hydrocarbon feedstocks to produce the acrylate esters (Haggin, 1985).

• Vorbereitung Methode

  Methyl acrylate is manufactured via a reaction of nickel carbonyl and acetylene with methanol in the presence of an acid; more commonly, however, it is manufactured via oxidation of propylene to acrolein and then to acrylic acid. The acid is reacted with methanol to yield the ester.

• Definition

  methacrylate: A salt or ester ofmethacrylic acid (2-methylpropenoicacid).

• Allgemeine Beschreibung

  Colorless volatile liquid with an acrid odor. Flash point 27°F. Vapors may irritate the eyes and respiratory system. Highly toxic by inhalation, ingestion and skin absorption. Less dense than water (0.957 gm / cm3) and slightly soluble in water, hence floats on water. Vapors heavier than air.

• Air & Water Reaktionen

  Highly flammable. Forms peroxides when exposed to air that may initiate spontaneous, exothermic polymerization. Peroxide formation usually proceeds slowly. Slightly soluble in water.

• Reaktivität anzeigen

  METHYL ACRYLATE ignites readily when exposed to heat, flame or sparks. Offers a dangerous fire and explosion hazard. Reacts vigorously with strong oxidizing materials. Forms peroxides when exposed to air that may initiate spontaneous exothermic polymerization. Peroxide formation usually proceeds slowly. Added inhibitor retards polymerization. If the inhibitor is consumed during long storage, explosive polymerization may occur [MCA Case History No. 2033]. Also subject to strongly exothermic polymerization if heated for prolonged periods or contaminated.

• Hazard

  Flammable, dangerous fire and explosion risk. Toxic by inhalation, ingestion, and skin absorption; irritant to skin, eyes and upper respiratory tract irritant; eye damage. Questionable carcinogen.

• Health Hazard

  The liquid is a strong irritant, and prolongedcontact with the eyes or skin may causesevere damage. Inhalation of its vapors cancause lacrimation, irritation of respiratorytract, lethargy, and at high concentrations,convulsions. One-hour exposure to a concen tration of 700–750 ppm in air caused deathto rabbits. The oral toxicity of methyl acry late in animals varied from low to moderate,depending on species, the LD50 values ranging between 250 and 850 mg/kg. The liquidmay be absorbed through the skin, producingmild toxic effects.

• Brandgefahr

  Flammable liquid; flash point (closed cup) -4°C (25°F), (open cup) -3°C (27°F); vapor pressure 68 torr at 20°C (68°F); vapor density 3.0 (air = 1); the vapor is heavier than air and can travel a considerable distance to a source of ignition and flashback; autoignition tem perature not established; fire-extinguishing agent: dry chemical, CO2, or “alcohol” foam; use water to keep the fire-exposed containers cool and to flush or dilute any spill; the vapors may polymerize and block the vents.
  The vapors of methyl acrylate form explo sive mixtures with air, over a relatively wide range; the LEL and UEL values are 2.8 and 25.0% by volume in air, respectively. Methyl acrylate undergoes self-polymerization at 25°C (77°F). The polymerization reaction proceeds with evolution of heat and the increased pressure can cause rupture of closed containers. The reaction rate is accelerated by heat, light, or peroxides. Vigorous to violent reaction may occur when mixed with strong oxidizers (especially nitrates and peroxides) and strong alkalie.

• Sicherheitsprofil

  Poison by ingestion and intraperitoneal routes. Moderately toxic by skin contact. Mddly toxic by inhalation. Human systemic effects by inhalation: olfaction effects, eye effects, and respiratory effects. A skin and eye irritant. Mutation data reported. Chronic exposure has produced injury to lungs, liver, and kidneys in experimental animals. Questionable carcinogen. Dangerously flammable when exposed to heat, flame, or oxidzers. Dangerous explosion hazard in the form of vapor when exposed to heat, sparks, or flame. Can react vigorously with oxidzing materials. A storage hazard; it forms peroxides, which may initiate exothermic polymerization. To fight fire, use foam, COa, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS.

• Sicherheit(Safety)

  It is an acute toxin with an LD₅₀ (rats, oral) of 300 mg/kg and a TLV of 10 ppm.

• mögliche Exposition

  Methyl acrylate is used in production of acrylates, copolymers, barrier resins; and surfactants for shampoos; as a monomer in the manufacture of polymers for plastic films, textiles, paper, and leather coating resins. It is also used as a pesticide intermediate and in pharmaceutical manufacture.

• Erste Hilfe

  If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. Medical observation is recommended for 2448 h after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a corticosteroid spray.

• Carcinogenicity

  Methyl acrylate was not shown to be carcinogenic in male and female rats in a lifetime inhalation study. Not listed by ACGIH, California Proposition 65, IARC, NTP, or OSHA.

• Environmental Fate

  Photolytic. Polymerizes on standing and is accelerated by heat, light, and peroxides (Windholz et al., 1983). Methyl acrylate reacts with OH radicals in the atmosphere (296 K) and aqueous solution at rates of 3.04 x 10^-12 and 2.80 x 10^-12 cm³/molecule?sec, respectively (Wallington et al., 1988b).
  Chemical/Physical. Begins to polymerize at 80.2 °C (Weast, 1986). Slowly hydrolyzes in water forming methyl alcohol and acrylic acid (Morrison and Boyd, 1971). Based on a hydrolysis rate constant of 0.0779/M?h at pH 9 at 25 °C, an estimated half-life of 2.8 yr at pH 7 was reported (Roy, 1972). The reported rate constant for the reaction of methacrylonitrile with ozone in the gas phase is 2.91 x 10^-18 cm³ mol/sec (Munshi et al., 1989a).

• Lager

  Methyl acrylate is stored in a flammable materials storage room or cabinet below 20°C (68°F), separated from oxidizing substances. It is inhibited with 200 ppm ofhydroquinone monomethyl ether to preventself-polymerization. It is shipped in bottles,cans, drums, or tank cars.

• Versand/Shipping

  UN1919 Methyl acrylate, stabilized, Hazard Class: 3; Labels: 3-Flammable liquid.

• läuterung methode

  Wash the ester repeatedly with aqueous NaOH until free from inhibitors (such as hydroquinone), then wash it with distilled water, dry (CaCl2) and fractionally distil it under reduced pressure in an all-glass apparatus. Seal it under nitrogen and store it at 0o in the dark. [Bamford & Han J Chem Soc, Faraday Trans 1 78 855 1982, Beilstein 2 IV 1457.]

• Toxicity evaluation

  Methyl acrylate (MA) is moderately toxic to fish (LC50 1.1 - 7.5 mg/l), crustaceans (LC50/EC50 0.31 - 2.6 mg/l) and algae(EC50 6.9 - 15.0 mg/l). In Selenastrum capricornutum, MA is algistatic at a concentration of 19 mg/l.It is of low acute toxicity to bacteria and protozoa.

• Inkompatibilitäten

  Forms explosive mixture in air. Incompatible with nitrates, oxidizers, such as peroxides, strong alkalis. Polymerizes easily from heat, light, peroxides; usually contains an inhibitor, such as hydroquinone.

• Filter für giftige stoffe

  The current initial threshold screening level (ITSL) for methyl acrylate is 70 μg/m3 based on an annual averaging time.

• 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. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal

Methyl acrylate Upstream-Materialien And Downstream Produkte

96-33-3, Methyl acrylate Verwandte Suche: