Methylpropionat

Bezeichnung:Methylpropionat

CAS-Nr554-12-1

Englisch Name:Methyl propionate

CBNumberCB8230902

SummenformelC4H8O2

Molgewicht88.11

MOL-Datei554-12-1.mol

Synonyma

Methylpropionat

Propansäuremethylester

Methylpropionat physikalisch-chemischer Eigenschaften

Schmelzpunkt	-88 °C (lit.)
Siedepunkt	79 °C (lit.)
Dichte	0.915 g/mL at 25 °C (lit.)
Dampfdichte	3 (vs air)
Dampfdruck	40 mm Hg ( 11 °C)
Brechungsindex	n20/D 1.376(lit.)
FEMA	2742 \| METHYL PROPIONATE
Flammpunkt	43 °F
storage temp.	Store below +30°C.
Löslichkeit	H2O: soluble16 parts
Aggregatzustand	Liquid
Farbe	Clear colorless
Geruch (Odor)	at 100.00 %. fresh harsh rum fruity strawberry apple
Geruchsart	fruity
Explosionsgrenze	2.5-13%(V)
Wasserlöslichkeit	5 g/100 mL at 20 ºC
Merck	14,6112
JECFA Number	141
BRN	1737628
Dielectric constant	5.5（19℃）
Stabilität	Stable. Highly flammable. Incompatible with strong oxidizing agents, acids, bases. Readily forms explosive mixtures with air. Moisture sensitive.
LogP	0.8 at 26.6℃
CAS Datenbank	554-12-1(CAS DataBase Reference)
NIST chemische Informationen	Propanoic acid, methyl ester(554-12-1)
EPA chemische Informationen	Methyl propionate (554-12-1)

Sicherheit

Kennzeichnung gefährlicher	F,Xn
R-Sätze:	11-20-2017/11/20
S-Sätze:	16-24-29-33
RIDADR	UN 1248 3/PG 2
WGK Germany	1
RTECS-Nr.	UF5970000
Selbstentzündungstemperatur	876 °F
TSCA	Yes
HS Code	2915 50 00
HazardClass	3
PackingGroup	II
Giftige Stoffe Daten	554-12-1(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: 5000 mg/kg

Gefahreninformationscode (GHS)

Methyl propionate 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 C₄H₈O₂. It is a volatile ester with a sweet, fruity, rum-like odor.
Chemische Eigenschaften
Methyl propionate has a fruity odor reminiscent of rum. It has a sweet flavor suggestive of black currant
Chemische Eigenschaften
Methyl propionate has a fruity odor reminiscent of rum with a sweet flavor suggestive of black currant. May be prepared by direct esterification of the acid with methanol in the presence of concentrated H2S04.
Chemische Eigenschaften
colourless liquid
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.
Verwenden
It is commonly used in organic synthesis. It undergoes vapor-phase aldol condensation with formaldehyde to form methyl methacrylate.
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 .
Definition
ChEBI: Methyl propionate is a carboxylic ester.
Aroma threshold values
Detection: 100 ppb to 8.8 ppm
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.
Flammability and Explosibility
Flammable
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.
Synthese
By direct esterification of the acid with methanol in the presence of concentrated H2SO4
mögliche Exposition
Used as a solvent; and in making paints, lacquers, and varnishes. Also used in flavorings and fragrances
Erste Hilfe
If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seekmedical attention immediately. If this chemical contactsthe skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove fromexposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing hasstopped and CPR if heart action has stopped. Transferpromptly to a medical facility. When this chemical hasbeen swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.
Lager
Color Code—Red: Flammability Hazard: Store ina flammable liquid storage area or approved cabinet awayfrom ignition sources and corrosive and reactive materials.Prior to working with methyl propionate you should betrained on its proper handling and storage. Before enteringconfined space where this chemical may be present, checkto make sure that an explosive concentration does not exist.Store in tightly closed containers in a cool, well-ventilatedarea away from oxidizers, strong acids, strong bases. Wherepossible, automatically pump liquid from drums or otherstorage containers to process containers. Drums must beequipped with self-closing valves, pressure vacuum bungs,and flame arresters. Use only nonsparking tools and equipment, especially when opening and closing containers ofthis chemical. Wherever this chemical is used, handled,manufactured, or stored, use explosion-proof electricalequipment and fittings.
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.

Methyl propionate Upstream-Materialien And Downstream Produkte

Methylpropionat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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