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Methacrylsure Produkt Beschreibung

Methacrylic acid Struktur
79-41-4
CAS-Nr.
79-41-4
Bezeichnung:
Methacrylsure
Englisch Name:
Methacrylic acid
Synonyma:
GE110;FX668F;ai3-15724;Loctite3298;CH2=C(CH3)COOH;Methacrylsαure;Metacrilic Acid;acidometacrilico;METHACRYLIC ACID;METAACRYLIC ACID
CBNumber:
CB9240023
Summenformel:
C4H6O2
Molgewicht:
86.09
MOL-Datei:
79-41-4.mol

Methacrylsure Eigenschaften

Schmelzpunkt:
16 °C
Siedepunkt:
163 °C(lit.)
Dichte
1.015 g/mL at 25 °C(lit.)
Dampfdichte
>3 (vs air)
Dampfdruck
1 mm Hg ( 20 °C)
Brechungsindex
n20/D 1.431(lit.)
Flammpunkt:
170 °F
storage temp. 
Indoors
Aggregatzustand
Liquid
pka
pK1:4.66 (25°C)
Farbe
Clear
PH
2.0-2.2 (100g/l, H2O, 20℃)
Explosionsgrenze
1.6-8.7%(V)
Wasserlöslichkeit
9.7 g/100 mL (20 ºC)
Sensitive 
Moisture & Light Sensitive
Merck 
14,5941
BRN 
1719937
Expositionsgrenzwerte
TLV-TWA 20 ppm (~70 mg/m3) (ACGIH).
Stabilität:
May be stabilized by the addition of MEHQ (Hydroquinone methyl ether, ca. 250 ppm) or hydroquinone. In the absence of a stabilizer this material will readily polymerize. Combustible. Incompatible with strong oxidizing agents, hydrochloric acid.
InChIKey
CERQOIWHTDAKMF-UHFFFAOYSA-N
CAS Datenbank
79-41-4(CAS DataBase Reference)
NIST chemische Informationen
2-Propenoic acid, 2-methyl-(79-41-4)
EPA chemische Informationen
2-Propenoic acid, 2-methyl-(79-41-4)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher C
R-Sätze: 21/22-35-37-20/21/22
S-Sätze: 26-36/37/39-45
RIDADR  UN 2531 8/PG 2
WGK Germany  1
RTECS-Nr. OZ2975000
Selbstentzündungstemperatur 752 °F
TSCA  Yes
HS Code  2916 13 00
HazardClass  8
PackingGroup  II
Giftige Stoffe Daten 79-41-4(Hazardous Substances Data)
Toxizität LD50 orally in Rabbit: 1320 mg/kg
Bildanzeige (GHS)
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H227 Combustible liquid Flammable liquids Category 4 Warnung P210, P280, P370+P378, P403+P235,P501
H302 Gesundheitsschädlich bei Verschlucken. Akute Toxizität oral Kategorie 4 Warnung P264, P270, P301+P312, P330, P501
H311 Giftig bei Hautkontakt. Akute Toxizität dermal Kategorie 3 Achtung P280, P302+P352, P312, P322, P361,P363, P405, P501
H314 Verursacht schwere Verätzungen der Haut und schwere Augenschäden. Ätzwirkung auf die Haut Kategorie 1B Achtung P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H332 Gesundheitsschädlich bei Einatmen. Akute Toxizität inhalativ Kategorie 4 Warnung P261, P271, P304+P340, P312
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizität (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung
Sicherheit
P261 Einatmen von Staub vermeiden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
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.
P405 Unter Verschluss aufbewahren.

Methacrylsure Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

FARBLOSE FLüSSIGKEIT ODER FARBLOSE KRISTALLE MIT CHARAKTERISTISCHEM GERUCH.

PHYSIKALISCHE GEFAHREN

Die Dämpfe sind nicht stabilisiert. Sie können polymerisieren und Lüftungsöffnungen blockieren.

CHEMISCHE GEFAHREN

Polymerisiert leicht beim Erhitzen oder unter Einfluss von Licht, Oxidationsmitteln (z.B. Peroxiden) oder in Gegenwart von Salzsäurespuren. Feuer- und Explosionsgefahr. Greift Metalle an.

ARBEITSPLATZGRENZWERTE

TLV: 20 ppm (als TWA); (ACGIH 2005).
MAK: 5 ppm 18 mg/m?Spitzenbegrenzung: überschreitungsfaktor I(2); Schwangerschaft: Gruppe C; (DFG 2005).

AUFNAHMEWEGE

Aufnahme in den Körper durch Inhalation.

INHALATIONSGEFAHREN

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

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz verätzt die Augen, die Haut und die Atemwege. ätzend beim Verschlucken. Inhalation des Dampfes kann zu Lungenödem führen (s.Anm.).

LECKAGE

Ausgelaufene Flüssigkeit in abdichtbaren Kunststoffbehältern sammeln. Reste vorsichtig mit wässriger Soda oder Kalk neutralisieren. Dann mit viel Wasser wegspülen. NICHT mit Sägemehl oder anderen brennbaren Absorptionsmitteln binden. Persönliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät.

R-Sätze Betriebsanweisung:

R21/22:Gesundheitsschädlich bei Berührung mit der Haut und beim Verschlucken.
R35:Verursacht schwere Verätzungen.

S-Sätze Betriebsanweisung:

S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).

Beschreibung

Methacrylic acid, abbreviated MAA, is an organic compound. This colourless, viscous liquid is a carboxylic acid with an acrid unpleasant odor. It is soluble in warm water and miscible with most organic solvents. Methacrylic acid is produced industrially on a large scale as a precursor to its esters, especially methyl methacrylate (MMA) and poly(methyl methacrylate) (PMMA). The methacrylates have numerous uses, most notably in the manufacture of polymers with trade names such as Lucite and Plexiglas. MAA occurs naturally in small amounts in the oil of Roman chamomile.

Chemische Eigenschaften

Methacrylic acid is a colorless liquid.

Chemische Eigenschaften

colourless liquid or crystals with an unpleasant odour.

Verwenden

Monomer for large-volume resins and polymers, organic synthesis. Many of the polymers are based on esters of the acid, as the methyl, butyl, or isobutyl esters.

Verwenden

Methacrylic acid is used in the manufactureof methacrylate resins and plastics.

Vorbereitung Methode

More than 3 million tons of methyl methacrylate (MMA) are produced annually. In one route, acetone cyanohydrin is converted to methacrylamide sulfate using sulfuric acid. That compound is hydrolyzed to methacrylic acid, or it can be converted into methyl methacrylate in one step. In the second route, isobutylene or tertbutanol are oxidized to methacrolein, then methacrylic acid.Methacrolein for this purpose can also be obtained from formaldehyde and ethylene. Isobutyric acid can also be dehydrogenated to methacrylic acid.
Methacrylic acid was first obtained in the form of its ethyl ester by treating phosphorus pentachloride with oxyisobutyric ester.[2] It is, however, more readily obtained by boiling citra- or mesobrompyrotartaric acids with alkalis. It crystallizes in prisms. When fused with an alkali, it forms propanoic acid. Sodium amalgam reduces it to isobutyric acid. A polymeric form of methacrylic acid was described in 1880.

Definition

ChEBI: An alpha,beta-unsaturated monocarboxylic acid that is acrylic acid in which the hydrogen at position 2 is substituted by a methyl group.

Allgemeine Beschreibung

A clear colorless liquid (or low-melting solid) with a pungent odor. Corrosive to metals and tissue. Flash point 170°F. Melting point 61°F. May polymerize exothermically if heated or contaminated. If the polymerization takes place inside a container, the container may rupture violently. Less dense than water. Vapors heavier than air. Used to make plastics.

Air & Water Reaktionen

Soluble in water.

Reaktivität anzeigen

Methacrylic acid reacts with strong oxidizing agents. Presents a storage hazard: violent exothermic polymerizations leading to explosion can occur spontaneously, particularly at low inhibitor or stabilizer concentrations [Anon., CISHC Chem. Safety Summ., 1979, 50, p. 34; Bond, J., Loss Prev. Bull., 1991, 101, p. 1].

Hazard

Toxic material. Strong irritant to eyes and skin. Questionable carcinogen.

Health Hazard

INHALATION: Severe irritation to respiratory tract. EYES: Short contact can cause severe damage. SKIN: Causes severe irritation and burns. Ingestion: High hazard - may cause death or permanent injury on short exposure to small quantities. OTHER: May affect blood pressure temporarily.

Health Hazard

Methacrylic acid is a highly corrosive liquid.Contact with eyes can result in blindness.Skin contact may produce burns. No inhalation toxicity was observed in rats. Exposureto its vapors may produce skin and eye irritation, which can be mild to moderate. Adermal LD50 value in rabbits is 500 mg/kg.

Brandgefahr

Combustible liquid; flash point (open cup) 76°C (170°F); vapor pressure <0.1 torr at 20°C (68°F). Fire-extinguishing agent: water spray, “alcohol” foam, dry chemical, or CO2; use a water spray to dilute and flush the spill and to disperse the vapors.
Methacrylic acid polymerizes readily. The reaction is exothermic. The rate of reaction accelerates on heating, which may result in violent rupture of closed containers. The polymerization may be inhibited with a trace quantity of hydroquinone and hydroquinone monomethyl ether (Aldrich 2006). The acid may be stored safely below its melting point.

Sicherheitsprofil

Poison by intraperitoneal route. Moderately toxic by ingestion and skin contact. Corrosive to skin, eyes, and mucous membranes. Mutation data reported. Flammable when exposed to heat, flame, or oxidizers. A storage hazard; exothermic polymerization may occur spontaneously. To fight fire, use alcohol foam, spray, mist, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.

mögliche Exposition

Methacrylic acid is used in preparation of methacrylates and carboxylated polymers; in the production of the material or its alkyl esters, as monomers or comonomers for synthetic resins for the production of plastic sheets, moldings, and fibers.

Versand/Shipping

UN2531 Methacrylic acid, stabilized, Hazard class: 8; Labels: 8-Corrosive material.

läuterung methode

Aqueous methacrylic acid (90%) is saturated with NaCl (to remove the bulk of the water), then the organic phase is dried with CaCl2 and distilled under vacuum. Polymerisation inhibitors should be added to the distillate and include 0.25% p-methoxyphenol, 0.1% hydroquinone, or 0.05% N,N'-diphenyl-p-phenylenediamine. [Beilstein 2 IV 1518.]

Inkompatibilitäten

Vapor may form explosive mixture with air. A reducing agent; incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Aqueous solution is strongly acidic: incompatible with strong acids; caustics, ammonia, amines, isocyanates, alkylene oxides; epichlorohydrin. Will polymerize readily from heating above 59F/15C, or due to the presence of light, oxidizers (e.g., peroxides); or in the presence of traces of hydrochloric acid, with fire or explosion hazard. Attacks metals. Note: Typically contains 100 ppm of monomethyl ether hydroquinone (150-76-5) as an inhibitor to prevent polymerization

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.

Methacrylsure Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Methacrylsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 211)Lieferanten
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Xiayi Yuhao Additives Co., Ltd.
18616206849
export@xyyhzj.com CHINA 67 58
Xiamen AmoyChem Co., Ltd
+86 (0)592-605 1114
sales@amoychem.com CHINA 6374 58
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32452 55
Anhui Royal Chemical Co., Ltd.
+86-025-86736275
dana.jiang@royal-chem.com CHINA 488 55
Yancheng Green Chemicals Co.,Ltd
86-515-87883661
86-515-87883652 sales@greenchem-china.com CHINA 349 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 25796 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23958 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254
peter@hubeijusheng.com CHINA 20084 58
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093 export@haihangchem.com CHINA 8266 58
QUALITY CONTROL CHEMICALS INC.
(323) 306-3136
(626) 453-0409 orders@qcchemical.com United States 8407 58

79-41-4(Methacrylsure)Verwandte Suche:


  • 2-Methyl-2-propensαure
  • 2-methyl-acrylicaci
  • 2-methylene-propionicaci
  • 2-methylenepropionicacid
  • 2-Methylpropencicacid
  • 2-Propenoicacid,2-methyl-
  • acidemethacrylique
  • acidemethacrylique(french)
  • acidometacrilico
  • Acrylic acid, 2-methyl-
  • ai3-15724
  • alpha.-Methylacrylicacid
  • alpha-Methacrylic acid
  • alpha-methacrylicacid
  • alpha-Methylacrylic acid
  • alpha-methylacrylicacid
  • CH2=C(CH3)COOH
  • FX668F
  • GE110
  • Kyselina methakrylova
  • kyselinamethakrylova
  • kyselinamethakrylova(czech)
  • Loctite3298
  • Methacrylic acid glacial
  • Methacrylic acid, inhibited
  • methacrylicacid(glacial)
  • methacrylicacid(inhibited)
  • methacrylicacid,inhibited
  • Methacrylsαure
  • propenoicacid,2-methyl
  • Propionic acid, 2-methylene-
  • METHACRYLIC ACID
  • 2-METHACRYLIC ACID
  • 2-METHYLPROPENOIC ACID
  • 2-METHYLACRYLIC ACID
  • RARECHEM AL BO 0090
  • PROPYLENE-2-CARBOXYLIC ACID
  • METAACRYLIC ACID
  • 2-mwthylacrylic acid
  • crotonic acid,buten(o)ic acid
  • METHACRYLIC ACID, MONOMER, STAB.
  • METHACRYLIC ACID GC STANDARD
  • METHACRYLIC ACID (STABILISED) 99+%
  • MethacrylicAcidForSynthesis
  • Methacrylicacid,99%
  • MethylAcrylicAcid(Maa)
  • Methacrylic acid, stabilized, extra pure, 99.5%
  • GLACIALMETHACRYLICACID
  • METHACRYLIC ACID , STABILIZED WITH 100-250PPM HYDROQUINONE OR 4-METHOXYPHENOL
  • Methacrylic acid, 99+%, stab. with 250ppm MEHQ
  • Methacrylic acid, 99%, stab. with 100-250ppm hydroquinone or 4-methoxyphenol
  • Methacrylic Acid (stabilized with MEHQ)
  • methacrylic acid 2-methylpropenoic acid
  • 2-Methacrylic acid, 2-Methylpropenoic acid
  • .alpha.-Methylacrylicacid
  • 2-Methyl-2-propenoic acid
  • 2-methyl-2-Propenoicacid
  • Methacrylic acid, 99.5%, stabilized, extra pure
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