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Name Diethylene glycol
CAS 111-46-6
EINECS(EC#) 203-872-2
Molecular Formula C4H10O3
MDL Number MFCD00002882
Molecular Weight 106.12
MOL File 111-46-6.mol

Chemical Properties

Appearance clear oily liquid
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 1.447(lit.)
Fp  143 °C
storage temp.  Keep in dark place,Sealed in dry,Room Temperature
solubility  H2O: 50 mg/mL at 20 °C, clear, colorless
form  Oily Liquid
pka 14.03±0.10(Predicted)
color  colorless
Odor Practically odorless.
PH 5.5-7.0 (25℃, 50mg/mL in H2O)
Relative polarity 0.713
explosive limit 2-12.3%
Water Solubility  SOLUBLE
FreezingPoint  -10.45℃
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: ≤0.02
λ: 280 nm Amax: ≤0.01
Merck  14,3119
BRN  969209
Dielectric constant 31.7(20℃)
Stability: Hygroscopic
LogP -1.98 at 20℃
Diethylene glycol is a colorless, odorless, clear liquid. It is miscible with water in any ratio. It has many industrial uses. It is a component of antifreeze, brake fluids, cosmetics, inks, and drying agents, and it is used as a plasticizer.
CAS DataBase Reference 111-46-6(CAS DataBase Reference)
NIST Chemistry Reference Ethanol, 2,2'-oxybis-(111-46-6)
EPA Substance Registry System 111-46-6(EPA Substance)

Safety Data

Hazard Codes  Xn,T,Xi
Risk Statements 
R22:Harmful if swallowed.
Safety Statements 
S46:If swallowed, seek medical advice immediately and show this container or label .
WGK Germany  1
RTECS  ID5950000
Autoignition Temperature 442 °F
Hazard Note  Toxic/Irritant
HS Code  29094100
Safety Profile
Moderately toxic to humans by ingestion. Poison experimentally by inhalation. Moderately toxic by ingestion and intravenous routes. Questionable carcinogen with experimental carcinogenic,tumorigenic, and teratogenic data. An eye and human skin irritant. Combustible when exposed to heat or flame; can react with oxidning materials. To fight fire, use alcohol foam, water, Con, dry chemical. Mixtures with sodium hydroxide decompose exothermically when heated to 230℃ and release explosive hydrogen gas. When heated to decomposition it emits acrid smoke and irritating fumes. See also GLYCOL ETHERS.
Hazardous Substances Data 111-46-6(Hazardous Substances Data)
LD50 in rats, guinea pigs (g/kg): 20.76, 13.21 orally (Smyth)

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