Butyl acetate Acetic acid butyl ester
Structural formula
| Business number | 03HA |
|---|---|
| Molecular formula | C6H12O2 |
| Molecular weight | 116.16 |
| label |
n-Butyl acetate, Butyl acetate, N-butyl acetate, n-Butyl acetate, Butyl acetate, Butyl ethanoate, 1-Butyl acetate, thinner, Extracting agent, Raw materials and intermediates used in ink |
Numbering system
CAS number:123-86-4
MDL number:MFCD00009445
EINECS number:204-658-1
RTECS number:AF7350000
BRN number:1741921
PubChem number:24857288
Physical property data
1. Properties: colorless and transparent liquid with fruity aroma. [1]
2. Melting point (℃): -76.8[2]
3. Boiling point (℃): 126.1[3]
4. Relative density (water = 1): 0.88[4]
5. Relative vapor Density (air=1): 4.1[5]
6. Saturated vapor pressure (kPa): 1.2 (20℃)[6]
7. Heat of combustion (kJ/mol): -3463.5[7]
8. Critical temperature (℃): 305.9[8]
9. Critical pressure (MPa): 3.1[9]
10. Octanol/water partition coefficient: 1.82 [10]
11. Flash point (℃): 22 (CC) [11]
12. Ignition temperature (℃) ): 421[12]
13. Explosion upper limit (%): 7.6[13]
14. Explosion lower limit (%): 1.2[14]
15. Solubility: Slightly soluble in water, soluble in most organic solvents such as ethanol, ether, and hydrocarbons. [15]
16. Viscosity (mPa·s, 20ºC): 0.734
17. Heat of evaporation (KJ/kg, b.p.): 309.3
18. Heat of formation (KJ/mol): 499.9
19. Specific heat capacity (KJ/(kg·K), 19.41ºC, constant pressure): 2.08
20. Specific heat capacity (KJ/(kg·K), 20ºC, constant pressure): 1.91
21. Conductivity (S/m, 25ºC): 13×10-9
22. Volume expansion coefficient (K-1): 0.0011
23. Critical pressure (MPa): 3.14
24. Eccentricity factor: 0.410
25. Solubility parameter (J·cm-3)0.5: 17.582
26 .van der Waals area (cm2·mol-1): 1.049×1010
27.van der Waals volume (cm3·mol-1): 73.230
28. Gas phase standard combustion heat (enthalpy) (kJ·mol– 1): -3590.83
29. Gas phase standard claims heat (enthalpy) (kJ·mol-1): -485.22
30 .Liquid phase standard combustion heat (enthalpy) (kJ·mol-1): -3547.24
31. Liquid phase standard claimed heat (enthalpy) (kJ·mol -1): -528.82
32. Liquid phase standard hot melt (J·mol-1·K-1): 228
Toxicological data
1. Acute toxicity[16]
LD50: 10, re-distillation.
3. Just carry out distillation, ultra-clean filtration and ultra-clean packaging of industrial butyl acetate.
4. Preparation method:
In a reaction bottle equipped with a reflux condenser, add 61g of 98% formic acid (1.33mol) and 31g of absolute ethanol (2) (0.67 mol), one particle of zeolite, heated to reflux for 24 hours. Change to a distillation device for distillation, collect fractions below 62°C, saturate the leachate with sodium chloride, and then wash with saturated sodium bicarbonate and saturated sodium chloride solutions in sequence. Dry with anhydrous sodium sulfate, fractionate, and collect the fraction at 53-54°C to obtain 36 g of butyl formate (1), with a yield of 72%. [26]
Purpose
1. Excellent organic solvent, good for cellulose acetate butyrate, ethyl cellulose, chlorinated rubber, polystyrene, methacrylic resin and many natural resins such as tannin, manilla gum, dammar resin, etc. Has good solubility properties. It is widely used in nitrocellulose varnish, as a solvent in the processing of artificial leather, fabrics and plastics, as an extractant in various petroleum processing and pharmaceutical processes, and also used in spice compounding and apricots, bananas, pears, pineapples, etc. Ingredients of various fragrances. Determination of metals thallium, tin and tungsten. Determination of molybdenum and rhenium. Antibiotic extractant.
2. Analytical reagents and solvents, used for the determination of thallium, tin, tungsten, molybdenum and rhenium, etc. Also used as a solvent for plastics, spray paint, nitrocellulose, artificial leather, etc.
3. Cosmetic solvents. It is mainly used as the medium boiling point main solvent for nail polish and other cosmetics to dissolve film-forming agents such as nitrocellulose, acrylic resin, and alkyd resin. It is often mixed with ethyl acetate, and the added amount is about 20% to 25%. In addition, it is also used to prepare nail polish remover, with an added amount of about 30%.
4. Used as solvents for spray paint, artificial leather, film, nitrocellulose, gum, etc. and for preparing spices and medicines. [25]