Question 2: Ethyl acetate is the representative of ester. What kind of substance is ethyl acetate? Is it an ester? What is the structural formula?
There is no such thing as pure ethyl ester. There must be some kind of acid.
Question 3: What is the use of ethyl acetate? Its main uses are: as an industrial solvent, used in coatings, adhesives, ethyl cellulose, artificial leather, linoleum colorants, artificial fibers and other products; As an adhesive, it is used to produce Yinfu ink and artificial pearls; As an extractant, it is used to produce drugs, organic acids and other products; As a spice raw material, it is used as the main raw material of pineapple, banana, strawberry and other fruit flavors and whiskey, cream and other spices. Used as solvent, and used to synthesize dyes and some pharmaceutical intermediates. It is one of the synthetic flavors with a large amount in food flavors, and is widely used to prepare flavor food flavors such as bananas, pears, peaches, pineapples and grapes. It is a quick-drying solvent for nitrocellulose, ethyl cellulose, cellulose acetate and neoprene, and it is also a low-toxic solvent used in industry. It can also be used as a cleaning agent in textile industry and an extracting agent for natural spices, and it is also an important raw material for pharmaceutical industry and organic synthesis.
Question 4: What harm does ethyl acetate do to people? "Ethyl acetate" is a colorless liquid, especially smelly, flammable and explosive. Dan can be absorbed through respiratory tract and digestive tract, damaging nervous system and removing sebum. Cough, dyspnea, dizziness, sore throat, abdominal pain, diarrhea, skin and conjunctival congestion and pain may occur after inhalation or ingestion.
Question 5: What is ethylparaben?
Chemical name: ethyl p-hydroxybenzoate
Alias: ethyl nipagin
This product is obtained by esterification of p-hydroxybenzoic acid with ethanol. It belongs to esters and is often used as antibacterial preservative.
Used as preservative for food, medicine and cosmetics.
Can cause contact dermatitis, urticaria, vascular edema, contact with eyes can cause pain and * * *. Touching your lips will make you feel numb.
Question 6: What is ethyl acetate? Ethyl acetate is a colorless and transparent liquid, which has the odor of * * * at high concentration, is volatile, sensitive to air and can absorb water. Moisture can make it decompose slowly and show an acidic reaction. It is miscible with chloroform, ethanol, acetone and ether and soluble in water (10%ml/ml). Can dissolve some metal salts (such as lithium chloride, cobalt chloride, zinc chloride, ferric chloride, etc. ). The relative density is 0.902. Melting point -83℃. The boiling point is 77℃. The refractive index is 1.35438+09. The flash point is 7.2℃ (open cup). Flammable. Steam can form an explosive mixture with air. The median lethal dose (oral) of rats was 1 1.3ml/kg. Have * * * sex.
Chinese name: ethyl acetate
English name: ethyl acetate
Nicknames: ethyl acetate, ethyl acetate, beet molasses.
Chemical formula: C4H8O2
Molecular weight: 88. 1 1 g? mol？ 1
CAS login number: 14 1-78-6
EINECS login number: 205-500-4
Melting point:-84 c (189.55k)
Boiling point: 77 degrees Celsius (350.25 K)
Water solubility: 8.3 g/100 ml (20℃)
Density: 0.897
Appearance: colorless liquid
Flash point: -4℃
Application: Organic chemical industry, flavors and fragrances, coatings, medicine and other industries.
Safety description: s: s 16-s26-s33.
Danger symbol: NFPA 704
Hazard description: r: r11-r36-r66-r67.
Dangerous goods transport number: 32 127
Smile: CC OCC
Refraction: 1.3720
Viscosity: 0.426(25 degrees Celsius)
Dipole moment: 1.78
Main hazards: flammable and * * *.
Critical point: 250.11c (523.26k)
Un number: 1 173
RTECS:AH5425000
Pinyin: yǐ suān yǐ zhǐ