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1,3-Propanediol

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1,3-Propanediol Basic information
1,3-Propanediol Chemical Properties
  • Melting point:-32 °C
  • Boiling point:214 °C760 mm Hg(lit.)
  • Density 1.053 g/mL at 25 °C(lit.)
  • vapor pressure 0.8 mm Hg ( 20 °C)
  • FEMA 4753 | 1,3-PROPANEDIOL
  • refractive index n20/D 1.440(lit.)
  • Flash point:>230 °F
  • storage temp. Store below +30°C.
  • solubility H2O: soluble
  • pka14.46±0.10(Predicted)
  • form Oily Liquid
  • color Clear
  • PH4.5-7.0 (100g/l, H2O, 20℃)
  • explosive limit2.5%(V)
  • Water Solubility 100 g/L
  • Merck 14,9714
  • BRN 969155
  • InChIKeyYPFDHNVEDLHUCE-UHFFFAOYSA-N
  • CAS DataBase Reference504-63-2(CAS DataBase Reference)
  • NIST Chemistry Reference1,3-Propanediol(504-63-2)
  • EPA Substance Registry System1,3-Propanediol (504-63-2)
Safety Information
  • Hazard Codes Xi
  • Risk Statements 38
  • Safety Statements 23-24/25
  • WGK Germany 1
  • RTECS TY2010000
  • Autoignition Temperature405 °C
  • TSCA Yes
  • HS Code 29053980
  • ToxicityLD50 orally in Rabbit: 15670 mg/kg LD50 dermal Rabbit > 20000 mg/kg
MSDS
1,3-Propanediol Usage And Synthesis
  • Chemical PropertiesColorless oil liquid; odorless. Soluble in water, alcohol, and ether. Combustible.
  • Chemical Properties1,3-Propanediol, an isomer of propylene glycol, is a viscous, colorless, odorless, hygroscopic liquid that has a brackish irritating taste .
  • Uses1,3-Propanediol is prepared as a by-product in the manufacture of glycerin by the saponification of fat . It is used to lower the freezing point of water and as a chemical intermediate. Industrial exposure is limited.
  • UsesSolvent for thin film preparations.1 Vinyl epoxide synthon2 and reagent for epoxide ring-opening3 and polymerization reactions.4 Reagent for natural product syntheses.5
  • Purification MethodsDry this diol with K2CO3 and distil it under reduced pressure. More extensive purification involves conversion with benzaldehyde to 2-phenyl-1,3-dioxane (m 47-48o) which is subsequently decomposed by shaking with 0.5M HCl (3mL/g) for 15minutes and standing overnight at room temperature. After neutralisation with K2CO3, the benzaldehyde is removed by steam distillation and the diol is recovered from the remaining aqueous solution by continuous extraction with CHCl3 for 1day. The extract is dried with K2CO3, the CHCl3 is evaporated and the diol is distilled. [Foster et al. Tetrahedron 6 177 1961, Beilstein 1 IV 2493.]
1,3-Propanediol Preparation Products And Raw materials
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