Ethylene glycol

• Catalog No.: A11591
• CAS Number: 107-21-1
• M. F.: C2H6O2
• M. W.: 62.06784
• Purity: 99%

SYNONYMS

• Title: 乙二醇
• IUPAC name: ethane-1,2-diol
• IUPAC Traditional name: ethylene glycol
• Synonyms: 1,2-Ethanediol; 1,2-Dihydroxyethane

DATABASE IDS

• MDL Number: MFCD00002885
• Beilstein Number: 505945
• CAS Number: 107-21-1
• EC Number: 203-473-3
• Merck Index: 143798

PROPERTIES

• Purity: 99%
• Boiling Point: 196-198°C
• Density: 1.113
• Flash Point: 119°C(246°F)
• Melting Point: -13°C
• Refractive Index: 1.4310
• GHS Hazard statements: H302
• European Hazard Symbols: X
• GHS Precautionary statements: P264-P270-P301+P312-P330-P501A
• Risk Statements: 22
• RTECS: KW2975000
• Safety Statements: 2
• Storage Warning: Hygroscopic
• TSCA Listed: 是

REFERENCES

• 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 ɑ?-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, ɑ?-enones are converted to ?-chloro acetals in one step: Tetrahedron Lett., 25, 3805 (1984).