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Ethylene glycol (Ethylene glycol)

Bargaining 10-21 09:11 Update

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Ethylene glycol

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Inquiry
  • 1,2-dihydroxy ethane
  • 1,2-Ethanediol
  • 1,2-Dihydroxyethane
  • Ethane-1,2-diol
  • 2-hydroxy ethanol
+Expand -Stow
107-21-1 C2H6O2 62.068 2905310000

Nature Description

Colorless clear viscous liquid. Freezing point-11.5 ℃, boiling point 198 ℃,140 ℃(12.93kPa),100 ℃(1.33kPa),70 ℃(0.4kPa),20 ℃(8.0Pa), relative density 1.1274(0/4 ℃),1.1204(10/4 ℃),1.1088(20/4 ℃),1.1065(30/4 ℃), refractive index 1.4318, density (vacuum, 20℃)1.11336g/ml. Flash point 116℃, viscosity (20℃)21mPa · s, specific heat capacity (20℃)2.35J/(g · ℃) molar generation heat-452.3kJ/mol, enthalpy change of solution 187.025J/g, steam heating 799.14J/g,
1.113 196-198oC -13oC -11.5℃ 116oC MISCIBLE 1.43-1.433 MISCIBLE

Product Applications

It is mainly used to produce synthetic resin, surfactant and explosive, and also used as antifreeze compounds; It is used as analytical reagent, chromatographic analysis reagent and capacitor medium; It is mainly used to produce polyester resin, alkyd resin, plasticizer, antifreeze compounds, it is also used in cosmetics and explosives; Ethylene glycol is the bactericide pentacyclazole and..

Production method

1. Ethylene oxide direct hydration is currently the only way to produce ethylene glycol on an industrial scale. Ethylene oxide and water are directly hydrated in liquid phase in a tubular reactor under the conditions of pressure (2.23MPa) and 190-200℃ to produce ethylene glycol. At the same time, ethylene glycol, triethylene glycol and polyethylene glycol are produced by-product. The ethylene glycol lean solution obtained from the reaction is concentrated by thin film evaporator, and then dehydrated and refined to obtain qualified ethylene glycol products and by-products. 2. Ethylene oxide sulfuric acid catalyzes water legal ethylene oxide and water are synthesized into ethylene glycol under the catalysis of sulfuric acid under the pressure of 60-80 ℃ and 9.806-19.61kPa. The reaction liquid is neutralized with liquid alkali, and the water is distilled off through the evaporator to obtain 80 ethylene glycol, and then distilled and concentrated in the distillation column to obtain more than 98 finished products. This method is an early development method. Due to corrosion, pollution and product quality problems and complicated refining process, countries have gradually stopped using it and changed to direct water law. 3. Ethylene direct water synthesis of ethylene glycol directly from ethylene without ethylene oxide. 4. Dichloroethane hydrolysis. 5. Formaldehyde method.

Security

Xn

S26: in case of contact with eyes, rinse with plenty of water immediately and send it to the doctor for diagnosis and treatment.

R22: swallowing is harmful.

UN12193/PG2

GHS07,GHS08

Packed in galvanized iron drums, 100kg or 200kg per barrel. It should be sealed during storage, and it should be nitrogen sealed, moisture-proof, fireproof and antifreeze for long-term storage. Storage and Transportation according to ignition control compound.

P260;P301+P312+P330

Warning

H302;H373

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