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Di-n-butyl ether

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Di-n-butyl ether Basic information
Di-n-butyl ether Chemical Properties
  • Melting point:−98 °C(lit.)
  • Boiling point:142-143 °C(lit.)
  • Density 0.764 g/mL at 25 °C(lit.)
  • vapor density 4.48 (vs air)
  • vapor pressure 4.8 mm Hg ( 20 °C)
  • refractive index n20/D 1.399(lit.)
  • Flash point:77 °F
  • storage temp. Flammables area
  • solubility H2O: soluble0.113g/L at 20°C
  • form Liquid
  • color Clear colorless
  • Relative polarity1.7
  • OdorMild, ether-like.
  • PH5.2 (0.2g/l, H2O, 20℃)
  • PH Range5.2
  • explosive limit0.9-8.5%(V)
  • Water Solubility 0.03 g/100 mL (20 ºC)
  • Merck 14,1569
  • BRN 1732752
  • Stability:Stable. Flammable. May form peroxides in storage. Incompatible with strong oxidizing agents.
  • CAS DataBase Reference142-96-1(CAS DataBase Reference)
  • NIST Chemistry Referencen-Butyl ether(142-96-1)
  • EPA Substance Registry SystemButyl ether (142-96-1)
Safety Information
  • Hazard Codes Xi
  • Risk Statements 10-36/37/38-52/53
  • Safety Statements 61-24/25
  • RIDADR UN 1149 3/PG 3
  • WGK Germany 2
  • RTECS EK5425000
  • Autoignition Temperature365 °F
  • Hazard Note Irritant
  • TSCA Yes
  • HazardClass 3
  • PackingGroup III
  • HS Code 29091990
  • Hazardous Substances Data142-96-1(Hazardous Substances Data)
  • ToxicityLD50 orally in rats: 7.4 g/kg (Smyth)
Di-n-butyl ether Usage And Synthesis
  • Chemical PropertiesDi-n-butyl ether is colourless liquid with ether-like odour
  • Chemical PropertiesDi-n-butyl ether is a flammable, colorless liquid with a mild, ethereal odor.
  • UsesSolvent for hydrocarbons, fatty materials; extracting agent used especially for separating met- als, solvent purification, organic synthesis (reaction medium).
  • General DescriptionDi-n-butyl ether is a  clear colorless liquid with an ethereal odor. Flash point below 141°F. Less dense than water and insoluble in water. Vapors heavier than air. Irritates the eyes, nose, throat, and respiratory tract.
  • Air & Water ReactionsHighly flammable. Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick 1979 p.151-154, 164]. A mixture of liquid air and diethyl ether exploded spontaneously [MCA Case History 616 1960]. Insoluble in water.
  • Reactivity ProfileEthers, such as BUTYL ETHER can act as bases. They form salts with strong acids and addition complexes with Lewis acids. The complex between diethyl ether and boron trifluoride is an example. Ethers may react violently with strong oxidizing agents. In other reactions, which typically involve the breaking of the carbon-oxygen bond, ethers are relatively inert.
  • HazardToxic on prolonged inhalation. Flammable, moderate fire risk. May form explosive peroxides, especially in anhydrous form.
  • Health HazardInhalation causes irritation of nose and throat. Liquid irritates eyes and may irritate skin on prolonged contact. Ingestion causes irritation of mouth and stomach.
  • Fire HazardBehavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.
  • Chemical ReactivityReactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
  • Industrial usesn-Butyl ether is used in synthesis reactions that require an anhydrous, inert solvent. This ether is a valuable extraction solvent for aqueous solutions because of its low water solubility. n-Butyl ether when mixed with ethanol or butanol is an excellent solvent for ethyl cellulose.
  • Safety ProfileMildly toxic by inhalation, ingestion, and skin contact. Human systemic effects by inhalation: conjunctiva irritation and unspecified nasal effects. An experimental skin and human eye irritant. See also ETHERS. Dangerous fire hazard when exposed to heat, flame, oroxidizers. Incompatible with NCL and oxidizing materials. To fight fire, use alcohol foam, dry chemical. When heated to decomposition it emits acrid smoke and fumes.
  • Potential ExposureDi-n-butyl ether is used as a solvent for hydrocarbons, fatty materials; extracting agent in used metals separation; solvent purification, making other chemicals. Incompatibilities: May form explosive mixture with air. May accumulate static electrical charges, and may cause ignition of its vapors. Incompatible with strong acids; oxidizers. Contact with air or light may form unstable and explosive peroxides, especially anhydrous form.
  • ShippingUN1149 Butyl ethers & Dibutyl ethers, Hazard Class: 3; Labels: 3—Flammable liquid
  • Purification MethodsPeroxides (detected by the liberation of iodine from weakly acid HCl solutions of 2% KI) can be removed by shaking 1L of ether with 5-10mL of a solution comprising of 6.0g of ferrous sulfate and 6mL conc H2SO4 and 110mL of water, with aqueous Na2SO3, or with acidified NaI, water, then aqueous Na2S2O3. After washing with dilute NaOH, KOH, or Na2CO3, then water, the ether is dried with CaCl2 and distilled. It can be further dried by distillation from CaH2 or Na (after drying with P2O5), and stored in the dark with Na or NaH. The ether can also be purified by treating with CS2 and NaOH, expelling the excess sulfide by heating. The ether is then washed with water, dried with NaOH and distilled [Kusama & Koike J Chem Soc Jpn, Pure Chem Sect 72 229 1951]. Other purification procedures include passage through an activated alumina column to remove peroxides, or through a column of silica gel, and distillation after adding about 3% (v/v) of a 1M solution of MeMgI in n-butyl ether. [Beilstein 1 IV 1520.]
  • Waste DisposalDissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.
Di-n-butyl ether Preparation Products And Raw materials
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