Ethyl acetate CAS NO.141-78-6

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Keywords

Ethyl acetate
141-78-6
ACETIC ESTER

Quick Details

ProName: Ethyl acetate
CasNo: 141-78-6
Molecular Formula: C4H8O2
Appearance: colorless, flammable liquid with fruit...
Application: Suitable for HPLC, spectrophotometry, ...
DeliveryTime: 15days
PackAge: in drums
Port: Tianjin xingang
ProductionCapacity: 10 Metric Ton/Day
Purity: 99%
Storage: Keep in dry and cool place
Transportation: BY SEA
LimitNum: 1 Kilogram
Heavy metal: less than 0.05%
Grade: Industrial Grade
Transportation: by sea

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Details

ethyl acetate chemical properties

mp	−84 °c(lit.)
bp	76.5-77.5 °c(lit.)
density	0.902 g/ml at 25 °c(lit.)
vapor density	3 (20 °c, vs air)
vapor pressure	73 mm hg ( 20 °c)
refractive index	n20/d 1.3720(lit.)
fema	2414
fp	26 °f
storage temp.	2-8°c
water solubility	80 g/l (20 ºc)
merck	14,3757
brn	506104
stability:	stable. incompatible with various plastics, strong oxidizing agents. highly flammable. vapour/air mixtures explosive. may be moisture sensitive.
cas database reference	141-78-6(cas database reference)
nist chemistry reference	ethyl acetate(141-78-6)
epa substance registry system	acetic acid ethyl ester(141-78-6)

limited use	fema (mg/kg). soft drinks: 67; cold drink: 99; candy: 170; bakery: 170; pudding class: 200; gum: 1400; wine: 50 to 65.
chemical properties	it is colorless, flammable liquid with fruit fragrance. it is miscible with various kinds of organic solvents such as ethers, alcohols, halogenated hydrocarbons, and arene. it is also slightly soluble in water.
production method	the direct esterification process is the major route of domestic industrial production of ethyl acetate. take acetate and ethanol as the raw material, sulfuric acid as the catalyst for direct esterification to obtain ethyl acetate, and then by dehydration, fractionation to obtain refined products. the acetaldehyde condensation method use aluminum alkyl as catalyst, perform the condensation reaction of acetaldehyde to obtain the ethyl acetate. most foreign industry adopts this technology. direct esterification of ethylene and acetic acid to obtain ethyl acetate. ethyl acetate may also be produced from the reaction between acetate and acetic anhydride or vinyl ketone and ethanol; it can also be obtained from the reactions of two molecules of acetaldehyde upon the catalysis of aluminum ethanol. in addition, the industrial production of acetate through butane oxidation can also produce ethyl acetate as byproduct. 1 esterification it is derived from the direct esterification between acetic acid and ethanol in the presence of sulfuric acid, production process includes: continuous and intermittent. (1) gap process. add acetic acid, ethanol and a small amount of sulfuric acid to the kettle and heat and reflux for 5-6h. then ethyl acetate was distilled off, and washed with 5% sodium chloride water; further use the mixture solution of sodium hydroxide and sodium chloride for neutralizing to ph = 8. further apply calcium oxide solution to wash it and add anhydrous potassium carbonate to dry it. finally distill it, and collect the 76-77 °c fractions to obtain the final products. (2) continuous process. add 1: 1.15 (mass ratio) of ethanol and acetic acid continuously into the esterification column reactor and perform the esterification reaction at 105-110 °c in the catalysis of sulfuric acid. the resulting ethyl acetate and water is distilled out in the tower top in the form of azeotrope; after condensation and stratification, the upper portion of the ester is refluxed with the remaining portion entering into crude tank; the lower layer of water is discarded after the recycling of ethyl acetate. the crude ester went through the distillation tower for removing a small amount of water and then entered into the refining tower again to obtain the final product at the top of the tower. this process is better than gap method. 2 acetaldehyde methods acetaldehyde is converted into ethyl acetate in the catalysis of aluminum ethanol. add acetaldehyde, aluminum ethanol continuously to two reactors in tandem; the reaction was carried out at 0-20 °c with the outlet conversion rate being higher than 99.5% in the second reactor. then further perform distillation to obtain the ethyl acetate with a yield of 95% -96%. this process is more economical.
category	flammable liquid
toxicity grading	poisoning
chemical properties	colorless liquid
usage	suitable for hplc, spectrophotometry, environmental testing
usage	meets urethane grade requirements (h2o ≤ 0.05%)
usage	ethyl acetate is generally used as a solvent in organic reactions.
acute oral toxicity	rat ld50: 5620 mg/kg; oral - mouse ld50: 4100 mg / kg
irritation data	eye-people 400 ppm
hazardous characteristics of explosive	explosive when mixed with air
flammability and hazard characteristics	it is flammable in case of fire, high temperature, and oxidant with burning causing irritated smoke
storage characteristics	treasury: ventilation, low-temperature and dry; store it separately from oxidants
extinguishing agent	dry powder, dry sand, carbon dioxide, foam, and 1211 fire extinguishing agent
professional standards	twa 1400 mg / m³; stel 2000 mg / m³
general description	a clear colorless liquid with a fruity odor. flash point 24°f. less dense than water. vapors heavier than air.
air & water reactions	highly flammable. slightly soluble in water. ethyl acetate is slowly hydrolyzed by moisture.
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.).
health hazard	headache, irritation of respiratory passages and eyes, dizziness and nausea, weakness, loss of consciousness.
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.