Products Description
Diethylene glycol (DEG) is a clear, colorless, odorless, and stable oily liquid characterized by relatively low viscosity, low volatility, and non-corrosive properties. Due to the presence of both ether and hydroxyl functional groups in its molecular structure, DEG exhibits chemical characteristics associated with both alcohols and ethers. It has a relatively high boiling point and excellent solvent capabilities. DEG is miscible with water, ethers, lower aliphatic alcohols, aldehydes, and ketones, while being partially soluble in benzene, carbon tetrachloride, monochlorobenzene, ortho-dichlorobenzene, and toluene. It can dissolve a wide range of substances, including dyes, resins, oils, nitrocellulose, and various organic compounds.
Owing to its strong solvent power, low volatility, and high hygroscopicity, diethylene glycol is widely used in textile lubricants, cutting oils, dry-cleaning soaps, printing inks, steam-set inks, and non-grain wood stains. In the textile industry, it serves as a conditioning agent for wool, rayon, and cotton, while its solvent properties make it a useful auxiliary agent in dyeing and printing processes. Its moisture-retention capabilities also make it suitable as a softening and humectant agent in tobacco, paper, synthetic sponges, adhesives, and casein-based products.
Additionally, diethylene glycol plays an important role in natural gas dehydration. It can be used in combination with monoethanolamine (MEA) to facilitate the removal of moisture, hydrogen sulfide, and carbon dioxide from natural gas streams.
Chemical Properties
Melting point | −10 °C(lit.) |
Boiling point | 245 °C(lit.) |
density | 1.118 g/mL at 25 °C(lit.) |
vapor density | 2.14 (vs air) |
vapor pressure | 0.01 mm Hg ( 20 °C) |
refractive index | n20/D |
Fp | 143 °C |
storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
solubility | H2O: 50 mg/mL at 20 °C, clear, colorless |
pka | 14.03±0.10(Predicted) |
form | Oily Liquid |
color | colorless |
Relative polarity | 0.713 |
PH | 5.5-7.0 (25℃, 50mg/mL in H2O) |
Odor | Practically odorless. |
explosive limit | 2-12.3% |
Water Solubility | SOLUBLE |
FreezingPoint | -10.45℃ |
Sensitive | Hygroscopic |
λmax | λ: 260 nm Amax: ≤0.02 |
Merck | 14,3119 |
BRN | 969209 |
Dielectric constant | 31.7（20℃） |
Stability: | Hygroscopic |
InChIKey | MTHSVFCYNBDYFN-UHFFFAOYSA-N |
LogP | -1.98 at 20℃ |
CAS DataBase Reference | 111-46-6(CAS DataBase Reference) |
NIST Chemistry Reference | Ethanol, 2,2'-oxybis-(111-46-6) |
EPA Substance Registry System | Diethylene glycol (111-46-6) |
Safety Information
Hazard Codes | Xn,T,Xi |
Risk Statements | 22 |
Safety Statements | 46 |
WGK Germany | 1 |
RTECS | ID5950000 |
F | 10 |
Autoignition Temperature | 442 °F |
Hazard Note | Toxic/Irritant |
TSCA | Yes |
HS Code | 29094100 |
Hazardous Substances Data | 111-46-6(Hazardous Substances Data) |
Toxicity | LD50 in rats, guinea pigs (g/kg): 20.76, 13.21 orally (Smyth) |
Product Applications
Propanols are widely used as solvents in coating formulations, antifreeze products, household and personal care products, and as chemical intermediates in the production of esters, amines, and various organic derivatives. Specifically, 1-propanol is commonly employed as a solvent in printing inks, paints, cosmetics, pesticides, cellulose ester formulations, and insecticide products.
In addition, 1-propanol is commercially used as a raw material for the manufacture of glycol ethers. These compounds possess dual functional groups, providing favorable solvency, chemical stability, and compatibility with water, making them suitable for a broad range of industrial applications.
