97-96-1 Usage
Chemical Properties
Different sources of media describe the Chemical Properties of 97-96-1 differently. You can refer to the following data:
1. Colorless liquid.Insoluble in water.
2. Ethyl butyraldehyde is a colorless liquid
3. 2-Ethylbutyraldehyde has a pungent odor.
Occurrence
Reported found in melon, French fried potato, wheaten bread, scallops, citrus fruits, white bread and maize.
Uses
Different sources of media describe the Uses of 97-96-1 differently. You can refer to the following data:
1. 2-Ethylbutyraldehyde has been used in the preparation of aldoximes using aqueous hydroxylamine.
2. Organic synthesis, pharmaceuticals, rubber
accelerators, synthetic resins.
Taste threshold values
Taste characteristics at 20 ppm: green, fruity, cocoa with sweet, fresh nuances.
General Description
A clear colorless liquid. Flash point 70°F. Less dense than water and insoluble in water. Vapors heavier than air.
Air & Water Reactions
Highly flammable. With air slowly form peroxides. Insoluble in water.
Reactivity Profile
2-ETHYLBUTYRALDEHYDE is an aldehyde. Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation.
Hazard
Irritant to eyes and skin. Flammable, dangerous fire risk.
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
Moderately toxic by
ingestion. Mildly toxic by inhalation. A skin
irritant. Flammable liquid. Can react
vigorously with oxidizing materials. To fight
fire, use alcohol foam, Co2, dry chemical.
When heated to decomposition it emits
acrid smoke and fumes. See also
ALDEHYDES.
Synthesis
From diethyl carbinol and anhydrous oxalic acid or with sulfuric acid; a more recent synthetic route (Xeisel–Neuwirth
method) calls for the reduction of α-vinylcrotonaldehyde using iron dust and acetic acid
Potential Exposure
Used in organic synthesis of pharmaceuticals and rubber chemicals.
Shipping
UN1178 2-Ethyl butyraldehyde, Hazard Class: 3;
Labels: 3-Flammable liquid
Incompatibilities
Vapors 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, and reducing agents. Aldehydes are frequently involved in self-condensation or polymerization
reactions. These reactions are exothermic; they are often
catalyzed by acid. Aldehydes are readily oxidized to give
carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing
agents. Aldehydes can react with air to give first peroxo
acids, and ultimately carboxylic acids. These autoxidation
reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products
of the reaction). The addition of stabilizers (antioxidants) to
shipments of aldehydes retards autoxidation
Check Digit Verification of cas no
The CAS Registry Mumber 97-96-1 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 7 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 97-96:
(4*9)+(3*7)+(2*9)+(1*6)=81
81 % 10 = 1
So 97-96-1 is a valid CAS Registry Number.
InChI:InChI=1/C6H12O/c1-3-6(4-2)5-7/h5-6H,3-4H2,1-2H3
97-96-1Relevant articles and documents
HIGHLY EFFICIENT METHOD FOR PRODUCING SATURATED HOMOETHER FROM UNSATURATED CARBONYL COMPOUND
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Paragraph 0049; 0051-0052, (2020/07/16)
PROBLEM TO BE SOLVED: To provide a method for efficiently producing a saturated homoether from an unsaturated carbonyl compound. SOLUTION: The method for producing an unsaturated homoether uses an unsaturated carbonyl compound and hydrogen as a raw material, uses a catalyst comprising a metal supported on an acidic catalyst carrier and performs at least once a pressure reduction operation so that a differential pressure from a reaction pressure is 0.01 MPa or more. In the method, the metal of the catalyst is, for example, palladium and the carrier of the catalyst is alumina, silica, silica-alumina or the like. The unsaturated carbonyl compound serving as a raw material is 2-butenal, 2-ethyl-2-hexenal, 2-ethyl-2-butenal, 2-hexenal or the like and the produced saturated homoether is dibutyl ether, bis(2-ethylhexyl)ether, bis(2-ethylbutyl)ether, dihexyl ether or the like. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT
Copper promoter effect on acid-base and redox sites of Fe/Al2O3 catalysts and their role in ethanol-acetone mixture conversion
Pinheiro, Antonio Narcisio,Dos Santos, Regina Claudia Rodrigues,Ferreira Dos Santos, Sarah Brenda,Da Silva Júnior, Moacir José,Pinheiro Braga, Tiago,Freire, Valder Nogueira,Valentini, Antoninho
, p. 443 - 458 (2018/02/07)
Active species of copper and iron oxide (Cu-Fe) catalysts supported on alumina were prepared by combining Pechini and wet impregnation methods. The effect of combined acid-base and redox sites of Cu and Fe species on gas-phase ethanol-acetone mixture conversion was investigated. The catalysts were characterized by chemical analyses, XRD, H2-TPR, M?ssbauer spectroscopy, N2 physisorption, CO2-TPD, SEM-EDS, TG/DTA and pyridine adsorption isotherms. N2 adsorption/desorption isotherms and SEM-EDS analysis showed that the addition of copper caused an increase of BET surface area and Cu and Fe oxide dispersion. H2-TPR characterization showed that interactions between Cu and Fe oxides shift the reducibility of Fe3+ species to lower temperature improving the redox properties of the catalyst. The partial reduction of the Cu and Fe oxide species was found to be efficient in inhibiting the side decomposition reactions, improving the catalytic efficiency towards dehydrogenation and hydrogen transfer processes. It was found that acid-base pairs play an important role in the formation of dehydrogenation, dehydration and condensation products from ethanol, while redox sites are decisive for hydrogen transfer reactions with reduction of acetone to isopropanol. H2-TPR and M?ssbauer spectroscopy results for the spent catalysts revealed that the highest catalytic performance of the Cu-FeAl catalysts may be attributed to the good dispersion of the Cu oxide and the site generated by the partial reduction which produces Cu+/Cu0 and Fe2+ active species. A reaction pathway with the participation of the acid-base and redox sites in the formation of products by consecutive dehydrogenation-condensation or dehydrogenation-hydrogenation reactions has been proposed.
Preparation method of key intermediate 2-ethyl butyraldehyde of 2-ethyl butyric acid
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Paragraph 0011-0012, (2017/07/19)
The invention provides a preparation method of a key intermediate, 2-ethyl butyraldehyde, of 2-ethyl butyric acid, wherein the preparation method includes the steps of: adding an ethyl magnesium halide Grignard reagent to a protected alpha-halogenated aldehyde (I) solution, and performing a stirring reaction for 1-10 h at a certain temperature; performing post-treatment and de-protecting the product to obtain the 2-ethyl butyraldehyde. A route in the process in represented as follows. The method has short route and high usage ratio, is low in cost and easy to industrialize, and avoids defects in conventional methods.
