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141-78-6 Usage

Category

Flammable liquid

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.

Health Hazard

Headache, irritation of respiratory passages and eyes, dizziness and nausea, weakness, loss of consciousness.

Extinguishing agent

dry powder, dry sand, carbon dioxide, foam, and 1211 fire extinguishing agent

Irritation data

eye-people 400 PPM

Production

Industrial production of ethyl acetate is mainly classified into three processes.

The first one is a classical Fischer esterification process of ethanol with acetic acid in presence of acid catalyst. This process needs acid catalyst2 such as sulphuric acid, hydrochloride acid, ptoluene sulfonic acid etc. This mixture converts to the ester in about 65% yield at room temperature. 
CH3CH2OH + CH3COOH ↔ CH3COOC2H5 + H2O
The reaction can be accelerated by acid catalysis and the equilibrium can be shifted to the right by removal of water.

The second one is Tishchenko Reaction of acetaldehyde using aluminium triethoxide as a catalyst. In Germany and Japan, most ethyl acetate is produced via the Tishchenko process. 
2 CH3CHO → CH3COOC2H5
This method has been proposed by two different routes; (i) dehydrogenative process, which uses copper or palladium based catalyst and (ii) the oxidative one, which employs, PdO supported catalysts.

The third one, which has been recently commercialized, is addition of acetic acid to ethylene using clay and heteroploy acid7 as a catalyst. 
CH2= CH2 + CH3COOH → CH3COOC2H5 
The processes, however, have some disadvantages; both the conventional esterification and addition of acetic acid to ethylene need stock tanks and apparatus for several feed stocks. Moreover, they use acetic acid that causes apparatus corrosion. Although Teshchenko Reaction uses only one feed and it is a non-corrosive material, it is difficult to handle acetaldehyde because is not available outside of petrochemical industrial area.
In such circumstances, an improved process of ethyl acetate production is strongly desired.

Storage characteristics

Treasury: ventilation, low-temperature and dry; store it separately from oxidants

Uses

Pharmaceutic aid (flavor); artificial fruit essences; solvent for nitrocellulose, varnishes, lacquers, and aeroplane dopes; manufacture of smokeless powder, artificial leather, photographic films and plates, artificial silk, perfumes; cleaning textiles, etc.

Uses

Industry Applications Role/Benefit
Flavor and essence Food flavor Used largely to prepare bananas, pears, peaches, pineapple and grape scent food flavors, etc
Alcoholic essence Used slightly as fragrance volatile
Perfume essence Used slightly as fragrance volatile
Chemical manufacture Production of acetamide, acetyl acetate, methyl heptanone, etc Organic chemical raw materials
Production of organic acid Extracting agent
Laboratory Dilution and extraction Supply excellent dissolving capacity
Chromatographic analysis Standard material
Column chromatography and extractions Main component of mobile phase
Reaction solvent Be prone to hydrolysis and transesterification
Chemical analysis Thermometer calibration for sugar separation  Standard material
Determination of bismuth, boron, gold, molybdenum, platinum and thallium Solvent
Entomology Insect collecting and study Used as effective asphyxiant to kill the collected insect quickly without destroying it
Textile industry Cleaning agent Supply excellent dissolving capacity
Printing Flexographic and rotogravure printing Dissolve the resin, control the viscosity and modify the drying rate
Electronics industry Viscosity reducer Reduce the viscosity of resins used in photoresist formulations
Paint manufacture Solvent Dissolve and dilute the paints
Health & personal care products The formulation of nail polish, nail polish removers and other manicuring products Supply excellent dissolving capacity
Pharmaceutical Medicine manufacturing Extraction agent; intermediate
Cosmetics Aroma enhancer In perfume to enhance aroma
Others Tanning extracts Used for desulfurization of tanning, cigarette materials, oil field drilling, metal flotation, descaling, etc
Production of adhesive Solvent
Extract many compounds (phosphorus, cobalt, tungsten, arsenic) from aqueous solution Extracting agent

Introduction

Ethyl Acetate is an organic ester compound with a molecular formula of C4H8O2 (commonly abbreviated as EtOAc or EA), appears as a colorless liquid. It is highly miscible with all common organic solvents (alcohols, ketones, glycols, esters), which make it a common solvent for cleaning, paint removal and coatings.
Ethyl acetate is found in alcoholic beverages, cereal crops, radishes, fruit juices, beer, wine, spirits etc. It has a fruity characteristic odor that is commonly recognized in glues, nail polish remover, decaffeinating tea and coffee, and cigarettes. Due to its agreeable aroma and low cost, this chemical is commonly used and manufactured in large scale in the world, as over 1 million tons annually.

Reactivity Profile

Ethyl acetate is also sensitive to heat. On prolonged storage, materials containing similar functional groups have formed explosive peroxides. Ethyl acetate may ignite or explode with lithium aluminum hydride. Ethyl acetate may also ignite with potassium tert-butoxide. Ethyl acetate is incompatible with nitrates, strong alkalis and strong acids. Ethyl acetate will attack some forms of plastics, rubber and coatings. Ethyl acetate is incompatible with oxidizers such as hydrogen peroxide, nitric acid, perchloric acid and chromium trioxide. Violent reactions occur with chlorosulfonic acid. . SOCl2 reacts with esters, such as Ethyl acetate, forming toxic SO2 gas and water soluble/toxic acyl chlorides, catalyzed by Fe or Zn (Spagnuolo, C.J. et al. 1992. Chemical and Engineering News 70(22):2.).

Flammability and hazard characteristics

it is flammable in case of fire, high temperature, and oxidant with burning causing irritated smoke

Air & Water Reactions

Highly flammable. Slightly soluble in water. Ethyl acetate is slowly hydrolyzed by moisture.

Purification Methods

The most common impurities in EtOAc are water, EtOH and acetic acid. These can be removed by washing with aqueous 5% Na2CO3, then with saturated aqueous CaCl2 or NaCl, and drying with K2CO3, CaSO4 or MgSO4. More efficient drying is achieved if the solvent is further dried with P2O5, CaH2 or molecular sieves before distillation. CaO has also been used. Alternatively, ethanol can be converted to ethyl acetate by refluxing with acetic anhydride (ca 1mL per 10mL of ester), the liquid is then fractionally distilled, dried with K2CO3 and redistilled. [Beilstein 2 III 127.]

Acute oral toxicity

rat LD50: 5620 mg/kg; Oral-Mouse LD50: 4100 mg/kg

Professional standards

TWA 1400 mg/m3; STEL 2000 mg/m3

Hazardous characteristics of explosive

explosive when mixed with air

Toxicity grading

poisoning

Purification and water removal methods

Ethyl acetate generally has a content of 95% to 98% containing a small amount of water, ethanol and acetic acid. It can be further purified as following: add 100mL of acetic anhydride into 1000mL of ethyl acetate; add 10 drops of concentrated sulfuric acid, heat and reflux for 4h to remove impurities such as ethanol and water, and then further subject to distillation. Distillate is oscillated by 20~30g of anhydrous potassium carbonate and further subject to re-distillation. The product has a boiling point of 77 °C and purity being over 99%.

Solubility in water

8.3 g/100 mL (20 °C)
InChI:InChI=1/C4H8O2/c1-3-6-4(2)5/h3H2,1-2H3

141-78-6 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
USP (1265402)  Ethylacetate  United States Pharmacopeia (USP) Reference Standard 141-78-6 1265402-3X1.2ML 4,662.45CNY Detail
Sigma-Aldrich (17023)  Ethylacetate  tested according to Ph.Eur. 141-78-6 17023-2.5L 980.46CNY Detail
Aldrich (W241415)  Ethylacetate  natural, ≥99%, FCC, FG 141-78-6 W241415-1KG-K 1,168.83CNY Detail
Aldrich (W241415)  Ethylacetate  natural, ≥99%, FCC, FG 141-78-6 W241415-SAMPLE-K 567.45CNY Detail
Aldrich (W241407)  Ethylacetate  ≥99%, FCC, FG 141-78-6 W241407-20KG-K 2,337.66CNY Detail
Aldrich (W241407)  Ethylacetate  ≥99%, FCC, FG 141-78-6 W241407-10KG-K 2,037.56CNY Detail
Aldrich (W241407)  Ethylacetate  ≥99%, FCC, FG 141-78-6 W241407-1KG-K 647.60CNY Detail
Aldrich (W241407)  Ethylacetate  ≥99%, FCC, FG 141-78-6 W241407-SAMPLE-K 567.45CNY Detail
Sigma-Aldrich (45767)  Ethylacetate  puriss. p.a., free of higher boiling impurities, ≥99.9% (GC) 141-78-6 45767-1L-F 952.38CNY Detail
Sigma-Aldrich (58958)  Ethylacetate  analytical standard 141-78-6 58958-5ML 255.06CNY Detail
Sigma-Aldrich (33211)  Ethylacetate  puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5% (GC) 141-78-6 33211-4X2.5L-R 4,799.34CNY Detail
Sigma-Aldrich (33211)  Ethylacetate  puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5% (GC) 141-78-6 33211-2.5L-R 1,463.67CNY Detail

141-78-6SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017

1.Identification

1.1 GHS Product identifier

Product name ethyl acetate

1.2 Other means of identification

Product number -
Other names Ethyl ethanoate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food additives -> Flavoring Agents
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:141-78-6 SDS

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