Qhov tseem ceeb ntawm cov qauv sib txawv
Ethylene glycol C2H6O2 yog diol yooj yim tshaj plaws, nrog ob pawg hydroxyl (-OH) ncaj qha txuas rau cov saw hlau. Cov qauv symmetrical no ua rau ethylene glycol EG ib qho me me molecule nrog ib qho yooj yim configuration.
DEG Diethylene glycol (C4H10O3)belongs rau ether- tsev neeg cawv. Nws cov qauv muaj ob pawg ethoxy (-OCH2CH2-) thiab ib pab pawg hydroxyl, ua rau lub molecular configuration complex thiab muab nws ib tug siab molecular hnyav dua ethylene glycol.
Distinct Physical and Chemical Properties
Cov yam ntxwv ntawm lub cev sib piv:
Lub cev muaj zog
- Ethylene glycol yog khov, nrog rau qhov kub ntawm 197.3 degree. Nws yog heev soluble nyob rau hauv dej thiab muaj zog hygroscopic.
- DEG diethylene glycol muaj qis viscosity, siab dua kub ntawm 245 degree, thiab superior thermal stability, txawm hais tias nws cov dej solubility kuj tsis muaj zog.
Chemical Properties
- Ethylene glycol EGyooj yim undergoes esterification cov tshuaj tiv thaiv thiab yog ib qho tseem ceeb raw khoom nyob rau hauv polyester synthesis.
- Diethylene glycol hnyav yog qhov yooj yim rau ether daim ntawv cog lus cleavage tshwm sim vim muaj kev sib txuas ntawm ether, sib txawv ntawm ethylene glycol hauv reactivity.
Divergence hauv Industrial Applications
Ethylene Glycol (EG) Siv:
- Cov khoom siv tseem ceeb rau polyester fiber ntau lawm (tshaj 60% ntawm kev siv thoob ntiaj teb).
- Cov khoom tseem ceeb ntawm automotive antifreeze thiab coolant formulations.
- Siv los ua ib qho hnyav hnyav thoob plaws ntau yam txheej txheem tshuaj.
Diethylene Glycol (DEG) Siv:
- Siv dav hauv kev lag luam coatings ua qhov siab -boiling-point deg hnyav.
- Ua hauj lwm raws li ib qho tseem ceeb nruab nrab ntawm plasticizer ntau lawm.
- Siv nyob rau hauv kws tshuaj raws li ib tug excipient thiab formulation pab.