540-42-1 Usage
Description
Isobutyl propionate is a colorless liquid with a fruity, sweet, and rummy aroma. It has a bitter flavor and is less dense than water. Its vapors are heavier than air, and it may be mildly toxic by ingestion, inhalation, and skin absorption. It is used in the manufacture of plastics and has a flash point of 86°F.
Uses
Used in Flavor and Fragrance Industry:
Isobutyl propionate is used as a flavoring agent for its sweet, fruity, banana, tutti-frutti, and rummy nuances. It is commonly found in the natural essences of grapes, hop oil, apple, pear, rum, apricot, melon, Gruyere and Parmesan cheese, cider, mushroom, quince, Bourbon vanilla, and spineless monkey orange.
Used in Plastics Industry:
Isobutyl propionate is used as a chemical intermediate in the production of plastics. Its chemical properties make it a suitable component for the manufacturing process.
Used in Perfumery:
Isobutyl propionate is used as a fragrance ingredient due to its refined and fresher odor, similar to the corresponding ethyl ester, with a fruity, sweet, rummy, pungent, and bubble gum estry aroma with a tropical nuance.
Preparation
By direct esterification or by reacting propionyl chloride with isobutyl alcohol in the presence of Mg dust in ether solution.
Air & Water Reactions
Highly flammable. Slightly soluble in water.
Reactivity Profile
Isobutyl propionate is an ester. Esters react 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 of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.
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.
Fire Hazard
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.
Safety Profile
Mldly toxic by
ingestion. Flammable when exposed to heat
or flame, can react vigorously with oxidizing
materials. When heated to decomposition it
emits acrid smoke and irritating fumes. See
also ESTERS, PROPIONIC ACID, and
ISOBUTYL ALCOHOL.
Check Digit Verification of cas no
The CAS Registry Mumber 540-42-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,4 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 540-42:
(5*5)+(4*4)+(3*0)+(2*4)+(1*2)=51
51 % 10 = 1
So 540-42-1 is a valid CAS Registry Number.
InChI:InChI=1/C7H14O2/c1-4-7(8)9-5-6(2)3/h6H,4-5H2,1-3H3
540-42-1Relevant articles and documents
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Wilcox,C.S.,Babston,R.E.
, p. 6636 (1986)
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Method for synthesizing propionate through ester-ester exchange path
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Paragraph 0030-0031, (2019/04/04)
The invention provides a method for synthesizing propionate through an ester-ester exchange path and relates to a method for synthesizing the propionate. According to the method, reaction raw materials include, but are not limited to ethyl formate, propyl formate, butyl formate, ethyl acetate, propyl acetate, butyl acetate and the like; the method for synthesizing the propionate through an ester exchange one-step method is adopted. A catalyst comprises alkaline materials including ionic liquid, soluble strong base, solid base and the like respectively; the catalyst has the advantages of high catalysis efficiency and no pollution. By taking methyl propionate and ethyl acetate reaction as an example, KOH is used as the catalyst, the mol ratio of the raw materials is 1 to 1, the reaction temperature is 60 DEG C and the reaction time is 5 min; the conversion ratios of the methyl propionate and the ethyl acetate can reach 70 percent or more; products comprise ethyl propionate and the methylacetate. The whole reaction path has the characteristics of short synthetic route, simple technological flow and high yield and the catalyst is stable, does not become inactive and can be repeatedlyutilized.
Highly regioselective and rapid hydroformylation of alkyl acrylates catalyzed by a rhodium complex with a tetraphosphorus ligand
Yu, Shichao,Chie, Yu-Ming,Zhang, Xumu
experimental part, p. 537 - 540 (2009/11/30)
Alkyl acrylates have been hydroformylated to the linear aldehydes with high regioselectivity (linear/branch > 99/1) and extraordinarily high average turnover frequencies (up to 5400 h-1) by using a rhodium complex with a tetraphosphorus ligand.
