Methylpropionat Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
PHYSIKALISCHE GEFAHREN
Die Dämpfe sind schwerer als Luft und können sich am Boden ausbreiten. Fernzündung möglich. Fließen, Schütten o.ä. kann zu elektrostatischer Aufladung führen.
CHEMISCHE GEFAHREN
Zersetzung beim Erhitzen unter Bildung reizender Rauche. Reagiert mit Oxidationsmitteln unter Feuergefahr.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
INHALATIONSGEFAHREN
Nur ungenügende Angaben vorhanden über die Geschwindigkeit, mit der eine gesundheitsschädliche Konzentration in der Luft beim Verdampfen bei 20°C erreicht wird.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz reizt die Atemwege, die Haut und die Augen.
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 Kanalisation spülen. Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe.
R-Sätze Betriebsanweisung:
R11:Leichtentzündlich.
R20:Gesundheitsschädlich beim Einatmen.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
S24:Berührung mit der Haut vermeiden.
S29:Nicht in die Kanalisation gelangen lassen.
S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
Beschreibung
Methyl propionate, also known as methyl propanoate, is a chemical compound with the molecular formula C
4H
8O
2. It is a volatile ester with a sweet, fruity, rum-like odor.
Chemische Eigenschaften
Methyl propionate is colorless liquid with
a sweet, fruity, rum-like odor.
Occurrence
Reported found in guava, honey, melon, pineapple, raspberry, blackberry, strawberry, cheddar cheese, cooked
beef, coffee, soy protein, durian (Durio zibethinus), starfruit, plum brandy, cherimoya, kiwifruit, naranjilla, mussels and rooibus tea
(Aspalathus linearis)
Verwenden
Methyl propionate is used as a solvent for cellulose nitrate and lacquers, and as a raw material for the production of paints, varnishes and other chemicals such as methyl methacrylate.
Due to its fruity smell and taste, it is also used in fragrances and flavoring.
synthetische
Methyl propionate can be prepared by esterification of propionic acid with methanol. Industrially, it is prepared by the reaction of ethylene with carbon monoxide and methanol in the presence of nickel carbonyl.
Vorbereitung Methode
Methyl propionate is produced by the direct esterification of
propionic acid with methanol in the presence of concentrated
sulfuric acid .
Allgemeine Beschreibung
A clear colorless liquid. Flash point 28°F. Density about the same as water. Vapors heavier than air. May irritate skin, eyes, and mucous membranes. Used for flavoring and as a solvent.
Air & Water Reaktionen
Highly flammable. Soluble in water.
Reaktivität anzeigen
Methyl propionate reacts with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction with caustic solutions. Flammable hydrogen is generated with alkali metals and hydrides.
Hazard
Flammable, dangerous fire risk, explosivelimits in air 2.5–13%.
Health Hazard
May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Brandgefahr
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Sicherheitsprofil
Moderately toxic by
ingestion. Mildly toxic by inhalation. A skin
irritant. A very dangerous fire hazard when
exposed to heat, flame, or oxidizers.
Explosive in the form of vapor when
exposed to heat or flame. To fight fire, use
foam, CO2, dry chemical. When heated to
decomposition it emits acrid smoke and
irritating fumes.
mögliche Exposition
Used as a solvent; and in making
paints, lacquers, and varnishes. Also used in flavorings and
fragrances
Versand/Shipping
UN1248 Methyl propionate, Hazard Class: 3;
Labels: 3-Flammable liquid.
läuterung methode
Wash the ester with saturated aqueous NaCl, then dry it with Na2CO3 and distil it from P2O5. (This removes any free acid and alcohol.) It has also been dried with anhydrous CuSO4. [Beilstein 2 IV 104.]
Inkompatibilitäten
May form explosive mixture with air.
Incompatible with oxidizers (chlorates, nitrates, peroxides,
permanganates, perchlorates, chlorine, bromine, fluorine,
etc.); contact may cause fires or explosions. Keep away
from alkaline materials, strong bases, strong acids,
oxoacids, epoxides. Keep away from heat and moisture.
Methylpropionat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Ramipril
Methyl-3-(methylthio)propionat
efficient polymer catalyst for acrylation-synthesis and characterigation of polyamide containing supernucleophilic reagent
Methyl-1-benzyl-4-oxopiperidin-3-carboxylathydrochlorid
Disperse Red 127
4-Amino-6-chloropyrimidine
Methyl-N-(2,6-dimethylphenyl)-N-(methoxyacetyl)-DL-alaninat
2',3-Bis[[3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionyl]]propionohydrazid
3-(3,5-Dichlorphenyl)-1,5-dimethyl-3-azabicyclo[3.1.0]hexan-2,4-dion
DICLOFOP-METHYL
Mecrilat
1-BENZYL-4-HYDROXY-4-(3-TRIFLUOROTOLYL)PIPERIDINOL
Carbetamid
CIS-1,2-DIMETHYL-CYCLOPROPANEDICARBOXYLIC ACID DIMETHYL ESTER
Benalaxyl
1-Benzyl-4-piperidon
Pentaerythrittetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionat)
Ethyl-2-chlorpropionat
2-Methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butenal
