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107-21-1 - Ethylene glycol, 99% - 1,2-Dihydroxyethane - 1,2-Ethanediol - A11591 - Alfa Aesar

A11591 Ethylene glycol, 99%

Codice CAS
107-21-1
Sinonimi
1,2-Dihydroxyethane
1,2-Ethanediol

Dimensioni Prezzo ($) Quantità Disponibilità
250g 16,48
500g 23,59
2500g 65,10
10000g 193,64
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Ethylene glycol, 99%

MDL
MFCD00002885
EINECS
203-473-3

Proprietà chimiche

Formula
C2H6O2
Peso formula
62.07
Punto di fusione
-13°
Punto di ebollizione
196-198°
Punto di infiammabilità
119°(246°F)
Densità
1.113
Indice di rifrazione
1.4310
Sensibilità
Hygroscopic
Solubilità
Miscible with water, toluene, tetrahydrofuran, alcohol, chloroform and other organic solvents.

Applicazioni

Ethylene glycol is used as a precursor for the syntheses of polymers like polyester fibers, resins and polyethylene terephthalate, which finds application in making plastic bottles. It acts as an intermediate in the synthesis of 1,4-dioxane. It plays an important role in organic synthesis as a protecting group for carbonyl groups. It is a useful desiccant due to its high boiling point and affinity towards water. It plays an important role to remove water vapor from natural gas before proceeding for further processes. Its major application is as a medium for convective heat transfer in automobiles and liquid cooled computers.

Note

Hygroscopic. Keep the container tightly closed in a dry and well-ventilated place. Incompatible with strong acids, strong oxidizing agents, strong bases, aldehydes and aluminum.

Letteratura

For examples of use in acetal (1,3-dioxolane) formation, catalyzed by tosic acid with azeotropic water removal, see: Org. Synth. Coll., 6, 567 (1988); 7, 241, 271 (1990). A mild dehydrating agent, e.g. triethyl orthoformate may be used as an alternative: J. Org. Chem., 48, 2122 (1983). PPTS (Pyridinium p-toluenesulfonate, A15708) has been recommended as a catalyst for the formation and cleavage of ethylene acetals, being less likely to cause acid-catalyzed rearrangements than tosic acid itself: Synthesis, 724 (1979). For acetalization of ɑß-enals, tartaric acid in the presence of anhydrous MgSO4 gives good results: J. Org. Chem., 60, 2931 (1995). Review of the preparation of acetals: Synthesis, 501 (1981). See also 2,2-Dimethyl-1,3-dioxolane, L00482.

In combination with TMS chloride, ɑß-enones are converted to ß-chloro acetals in one step: Tetrahedron Lett., 25, 3805 (1984).

Pluta, M.; Piorkowska, E. Tough and transparent blends of polylactide with block copolymers of ethylene glycol and propylene glycol. Polym. Test. 2015, 41, 209-218.

Zahmatkesh, H. G,, Javanbakht, M.; Ghaemi, M. Ethylene glycol-assisted hydrothermal synthesis and characterization of bow-tie-like lithium iron phosphate nanocrystals for lithium-ion batteries. J. Power Sources 2015, 284, 339-348.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H373-H302

May cause damage to organs through prolonged or repeated exposure. Harmful if swallowed.

Dichiarazioni precauzionali: P260-P264-P270-P301+P312-P314-P330-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. Wash thoroughly after handling. Do not eat, drink or smoke when using this product. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. Get medical advice/attention if you feel unwell. Rinse mouth. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Merck
14,3798
Beilstein
505945
Codice tariffe armonizzato
2905.31
TSCA
Yes
RTECS
KW2975000

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