Structural formula
| Business number | 0300 |
|---|---|
| Molecular formula | C3H8O2 |
| Molecular weight | 76.09 |
| label |
Ethylene glycol monomethyl ether, Ethylene glycol monomethyl ether, Methyl cellosolve, Methoxyethanol, Hydroxyethyl methyl ether, Ethylene glycol, Ethylene glycol monomethyl ether, Methyl cellosolve, Methoxyethanol, Aliphatic alcohols, ethers and their derivatives |
Numbering system
CAS number:109-86-4
MDL number:MFCD00002867
EINECS number:203-713-7
RTECS number:KL5775000
BRN number:1731074
PubChem number:24857158
Physical property data
1. Properties: colorless liquid with a slight ether smell. [1]
2. Melting point (℃): -85.1[2]
3. Boiling point (℃): 124.5[3]
4. Relative density (water=1): 0.97 (20℃)[4]
5. Relative vapor density (air = 1): 2.62[5]
6. Saturated vapor pressure (kPa): 1.29 (25℃)[6]
7. Heat of combustion (kJ/mol): -399.5[7]
8. Critical temperature (℃): 324.45[8]
9. Critical pressure (MPa): 5.285[9]
10. Octanol/water partition coefficient: -0.77[10]
11. Flash point (℃): 39[11]
12. Ignition temperature (℃): 285[12]
13. Explosion upper limit (%): 14[13]
14. Lower explosion limit (%): 1.8[14]
15. Solubility: miscible with water, miscible with alcohols, ketones, and hydrocarbons. [15]
16. Refractive index (n20ºC): 1.4028
17. Refractive index (n25ºC): 1.4013
18 . Viscosity (mPa·s, 20ºC): 1.72
19. Viscosity (mPa·s, 25ºC): 1.60
20. Flash point (ºC, closed): 43
p>
21. Flash point (ºC, open): 461
22. Specific heat capacity (KJ/(kg·K), 25ºC, constant pressure): 2.20
23 .Conductivity (S/m, 20ºC): 1.09×10-6
24. Vapor pressure (kPa, 25ºC): 1.3
25. Vapor pressure (kPa, 27ºC): 1.3
26. Vapor pressure (kPa, 56ºC): 6.7
27. Volume expansion coefficient (K-1 ,20ºC): 0.00095
28. Critical density (g·cm-3): 0.281
29. Critical volume (cm3·mol-1): 263
30. Critical compression factor: 0.280
31. Eccentricity factor: 0.731
32. Solubility parameter (J·cm-3)0.5: 23.204
33. van der Waals area (cm2·mol-1): 6.880×109
34. van der Waals volume (cm3 ·mol-1): 45.870
Toxicological data
1. Acute toxicity[16]
LD50: 237Reflux or pass it through an activated alumina column to remove. Aliphatic ketones can be removed by adding 2,4-dinitrophenylhydrazine. Potassium carbonate, calcium sulfate, magnesium sulfate or silica gel can also be used as desiccant.
3. Shake 95% third-grade pure ethylene glycol monomethyl ether with anhydrous sodium carbonate to remove inorganic acid or organic acid impurities, then dry with anhydrous calcium sulfate and then distill.
Purpose
1. This product is mainly used as a solvent for grease, nitrocellulose, synthetic resin, alcohol-soluble dyes and ethyl cellulose; in the coating industry, it is used as a varnish quick-drying agent and coating diluent; in the printing and dyeing industry, it is used as a penetrating agent and leveling agent; used as an additive in the fuel industry; used as a dyeing auxiliary in the textile industry and as an intermediate in organic synthesis. Diethylene glycol monomethyl ether is mainly used as a high boiling point solvent for inks, dyes, resins, cellulose and coatings. Adding it to coatings can make it easy to flow, paint and level. It can be used as an extraction agent for hydrocarbons and in organic synthesis. It is used as an intermediate in the preparation of ester derivatives in industry, and as a chemical reagent in analytical chemistry. Polyethylene glycol monomethyl ether can be used as brake fluid, etc.
2. Used as a solvent for dyes, inks, cortisone, etc. soluble in alcohol, as well as pesticide dispersants, leather treatment agents, plasticizers, etc.
3. Widely used as solvent and diluent for nitrocellulose paint, varnish, enamel and other coatings; inactive diluent for adhesives; various oils, lignin, nitrocellulose, Cellulose acetate, alcohol-soluble dyes, solvents for inks and synthetic resins, as well as pesticide dispersants, leather treatment agents, plasticizers, brighteners and organic synthesis intermediates, etc.
4. Used as solvent. [30]
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