14BG/1,4-Butylene glycol/1,4-Butanediol(BDO) CAS 110-63-4

1. Description

14BG (1,4-Butanediol) is a straight chain glycol with hydroxyl groups on both ends. It is used as a raw material for high performance polyester and polyurethane resins as well as for industrial chemicals like tetrahydrofuran and gamma-butyrolactone.

2. Characteristics

14BG (1,4-Butanediol (BDO), 1,4-Butylene glycol (BG), 1,4-Dihydroxy butane, Tetramethylene glycol (TMG)) is the 4-carbon atoms straight-chain glycol (diol, dihydric alcohol) with a hydroxyl groups at both ends.

3. Physical properties

Common Names	1,4-Butanediol 1,4-Butylene Glycol 1,4-Dihydroxybutane Tetramethylene Glycol
Structure
CAS　No.	110-63-4
Molecular Weight	90.1
Appearance	Clear colorless liquid (wax-like solid when cold)
Odor	Faint
Specific Gravity (25/4℃)	1.012
Viscosity(mPa･s)	65(at 25℃)
Boiling Point (℃)	228
Freezing Point (℃)	20.1
Flash Point (℃)	134
Vapor pressure (kPa)	0.001(27℃)
Heat of Vaporization (kJ/mol)	64.9(228℃)
Heat capacity (kJ/kg･K)	2.21(25℃)
Thermal conductivity (W/m･K)	0.22(25℃)
Volume resistivity (Ω • cm)	2.2×107(23℃)

4. Applications

14BG (1,4-Butanediol (BDO), 1,4-Butylene glycol (BG), 1,4-Dihydroxy butane, Tetramethylene glycol (TMG)) is a raw material for polyester and polyurethane resins (chain extender, hard segment) that show excellent characteristics.
These products find a wide range of applications including everyday consumer products such as clothing and shoe soles, consumer durables such as electrical appliances and cars, industrial materials such as machine parts, as well as medical products. It is anticipated that the use of these polymers will continue to expand.

Main Applications

• PBT (Polybutylene terephthalate) Resin Raw Material

Because 14BG diol (dibasic alcohol) is used as a raw materail, PBT is a great engineering plastic with low water-absorbance and an excellent balance of mechanical and electrical properties. Applications are expanding beyond the original electrical/electronic parts and automotive parts markets.

• Polyurethane Resin Raw Material

By using 14BG diol for the chain extender, urethane elastomers can be made with excellent mechanical properties and high resistances to heat, oil, and impact.

• Other Polyester Raw Materials

14BG is widely used to make various polyester resins and plasticizers.
Raw Material for Industrial Chemicals (Tetrahydrofuran, Gamma-Butyrolactone)
Tetrahydrofuran and gamma-butyrolactone are produced indutrially by dehydration or dehydrogenation of 14BG.

5. Packing

200kg/drum; ISO container