32160

Diethylene glycol

≥99.0% (GC), viscous liquid (clear), suitable for GC/GC, puriss. p.a.

• Synonym(s): 2,2′-Oxydiethanol, 2-Hydroxyethyl ether, Bis(2-hydroxyethyl) ether, Diglycol
• Linear Formula: (HOCH₂CH₂)₂O
• CAS Number: 111-46-6
• Molecular Weight: 106.12
• NACRES: NA.21
• PubChem Substance ID: 57648659
• UNSPSC Code: 12352100
• EC Number: 203-872-2
• MDL number: MFCD00002882
• Beilstein/REAXYS Number: 969209
• Assay: ≥99.0% (GC)
• Technique(s): GC/GC: suitable
• Bp: 245 °C (473 °F), 245 °C (lit.)
• Vapor pressure: 0.01 mmHg ( 20 °C)

Properties

• Product Name: Diethylene glycol, puriss. p.a., ≥99.0% (GC), colorless
• vapor density: 2.14 (vs air)
• Quality Segment: 200
• vapor pressure: 0.01 mmHg ( 20 °C)
• description: non-ionic
• grade: puriss. p.a.
• assay: ≥99.0% (GC)
• form: viscous liquid (clear)
• autoignition temp.: 442 °F
• expl. lim.: 2-12.3 %
• technique(s): GC/GC: suitable
• impurities: ≤0.003% peroxides (as H₂O₂), ≤0.01% free acid (as CH₃COOH), ≤0.1% water, ≤0.8% ethylene glycol (HOCH₂CH₂OH)
• color: colorless, APHA: ≤25
• refractive index: n20/D 1.447
• bp: 245 °C (473 °F), 245 °C (lit.)
• mp: −10 °C (lit.)
• density: 1.116 g/mL at 20 °C, 1.118 g/mL at 25 °C (lit.)
• cation traces: Ca: ≤5 mg/kg, Cd: ≤1 mg/kg, Co: ≤1 mg/kg, Cr: ≤1 mg/kg, Cu: ≤1 mg/kg, Fe: ≤2 mg/kg, K: ≤20 mg/kg, Mg: ≤1 mg/kg, Mn: ≤1 mg/kg, Na: ≤20 mg/kg, Ni: ≤1 mg/kg, Pb: ≤1 mg/kg, Zn: ≤10 mg/kg
• SMILES string: OCCOCCO
• InChI: 1S/C4H10O3/c5-1-3-7-4-2-6/h5-6H,1-4H2
• InChI key: MTHSVFCYNBDYFN-UHFFFAOYSA-N

Description

General description

Diethylene glycol (DEG) is formed as side reaction product during the esterification reaction of terephthalic acid with ethylene glycol. It readily forms complexes with 3d transition metal cations in the presence of alkaline hydroxide.[1] Its solutions are widely employed for antifreeze and lubricating applications. Oxidative degradation of DEG with ozone by modified Fenton process (mixture of hydrogen peroxide and ferric salt) was described in a study.[2]

Application

Diethylene glycol may be used for electrodeposition of cadmium sulfide (CdSe) films. It may be used to compose the fluoride ion electrolytes, for use in the preparation of self-organized titania nanotube arrays.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H302
• pcodes: P264 - P270 - P301 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Oral
• Storage Class: 10 - Combustible liquids
• wgk: WGK 1
• flash_point_f: 280.4 °F - closed cup
• flash_point_c: 138 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter