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1 : 4 Butane Diol



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Product Description
Physical and Chemical Properties:
Physical state and appearance Liquid. (Oily liquid.)
Odor Odorless
Molecular Weight 90.12g/mole
Boiling Point 230°C (446°F)
Melting Point 20.1°C (68.2°F)
Specific Gravity 1 (Water = 1)
Vapor Pressure 0 kPa (@ 20°C)
Vapor Density 3.1 (Air = 1)
Dispersion Properties See solubility in water
Solubility Easily soluble in cold water
1,4 Butanediol assay, Weight% 99.5
Water, Weight ppm 400
Carbonyl as CHO, mgKOH/g 0.3

Application:
  • It is used industrially as a solvent and in the manufacture of Polyurethanes.
  • It is used as a raw material to produce tetrahydrofuran (THF), polybutylene terephthalate (PBT) resins, gamma-butyrolactone (GBL), polyurethanes.
  • It is used in pharmaceuticals.

Production:
  • 1,4-butanediol was first prepared in 1890 by acid hydrolysis of N, N ?-dinitro-1,4-butanediamine. Other early preparations were by reduction of succinaldehyde or succinic esters and by saponification of the diacetate prepared from 1,4-dihalobutanes. A more modern process
  • HC ≡ CH+2HCHO −−›HOCHC ≡ CCH2OH −› HOCH2CH2CH2OH
  • involves the use of maleic anhydride as the starting material. In the process maleic anhydride is first esterified with methanol and the ester is fed to a low-pressure vapor-phase hydrogenation system where it is converted to butanediol.

Attention:
  • Remove to fresh air. Get medical attention for any breathing difficulty. Induce vomiting immediately as directed by medical personnel. Never give anything by mouth to an unconscious person.
  • Immediately flush skin with plenty of water for at least 15 minutes. Remove contaminated clothing and shoes. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention if irritation develops.
  • Immediately flush eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids occasionally. Get medical attention if irritation persists.

Product Code : 04

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