Furfuryl alcohol Furfuryl alcohol
Structural formula
| Business number | 02D1 |
|---|---|
| Molecular formula | C5H6O2 |
| Molecular weight | 98.10 |
| label |
α-furanmethanol, 2-furanmethanol, Glutol, 2-Hydroxymethylfuran, Oxocene methanol, α-Furan methanol, 2-Furfurylalcohol, Gluten alcohol, 2-Hydroxymethyl-furan, Fruylcarbinol, heterocyclic compounds, synthetic raw materials |
Numbering system
CAS number:98-00-0
MDL number:MFCD00003252
EINECS number:202-626-1
RTECS number:LU9100000
BRN number:106291
PubChem number:24851190
Physical property data
1. Properties: colorless or light yellow liquid, which turns brown or dark red when exposed to sunlight and air, and has a special bitter and spicy smell.
2. Boiling point (ºC, 101.3kPa): 170.0
3. Melting point (ºC, freezing point, quasi-stable): -14.6
4. Melting point (ºC, freezing point, stable state): -14.63
5. Relative density (g/mL, 20/4ºC): 1.1285
6. Relative density (g/mL, 30 /4ºC): 1.12384
7. Relative vapor density (g/mL, air=1): 3.4
8. Refractive index (20ºC): 1.4868
9. Refractive index (30ºC): 1.4801
10. Viscosity (mPa·s, 25ºC): 4.62
11. Flash point (ºC, closed): 65
12. Flash point (ºC): 391
13. Heat of evaporation (KJ/mol, 25ºC): 50
14. Heat of evaporation (KJ/mol, b.p.) :53.6
15. Heat of fusion (KJ/mol): 13.138
16. Heat of formation (KJ/mol): 276.54
17. Heat of combustion ( KJ/mol, standard conditions): 2550.43
18. Specific heat capacity (KJ/(kg·K), 26.8ºC, constant pressure): 2.09
19. Vapor pressure (kPa, 25ºC): 0.08
20. Lower explosion limit (%, V/V): 1.8
21. Upper explosion limit (%, V/V): 16.3
22. Solubility: Easily soluble in water, ethanol, ether, acetone, ethyl acetate and other organic solvents, but insoluble in non-polar organic solvents such as paraffin. Can dissolve grease, natural resin, cellulose acetate, ethyl cellulose, nitrocellulose, polyvinyl acetate, polymethylmethacrylate, etc.
23.The reaction is carried out at 190~210℃, 5-8MPa (or above 10MPa, 170℃, using Cu-Cr catalyst). After the reaction is completed, settle and remove the solid catalyst, and the resulting liquid is crude furfuryl alcohol. Gas phase hydrogenation method: In a tubular reactor, furfural and hydrogen are reacted at 1:42 (molar ratio) in the presence of Ni-Cu or Cr-Cu catalyst at 80~170°C and 0.1~0.39MPa. have to. The obtained crude furfuryl alcohol is rectified under reduced pressure at 80-87kPa to remove tar-like substances, then washed with sodium bisulfite, dried and dehydrated, and then sodium carbonate is added to reduce the pressure. Distill to obtain pure furanmethanol.
3.The disproportionation method uses furfural as raw material to cause a disproportionation reaction of furfural in the presence of caustic soda. The advantage is that the equipment is simple and no reducing agent is required. The disadvantage is that the utilization rate of raw materials is low.
4. Tobacco: BU, 56; OR, 18; FC, 9; FC, BU, OR, 18; FC, 18; FC, 40.
Purpose
1. In addition to being used as a raw material for furan resin, furfuryl alcohol can also be used as a dye, solvent, dispersant, and wetting agent for varnish, phenolic resin, and furan resin. The plasticizer made from it has better cold resistance than the esters of butanol and octanol. 2.Used for synthetic resin. Used as solvent and preservative for dyes and resins. 3.is an important chemical and light industrial raw material, used to synthesize furfural resins with various properties, adhesives in the machine-made casting industry, furan resins or Adhesives, urea-formaldehyde resin, phenolic resin, furfuryl alcohol-urea-formaldehyde resin, synthetic rubber, pesticides, cold-resistant plasticizers, etc. It is also used as a solvent, diluent, modifier, dispersant or wetting agent for coatings, dyes, furan resins, furfural resins, etc. It is also used as a rocket fuel additive and paint stripper. 3. Used in organic synthesis, synthetic fibers, rubber, pesticides, etc.