
CAS 16104-97-5
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Degré de pureté (%)
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100
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90
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95
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100
4 produits concernés.
Ethylene Terephthalate Cyclic Pentamer-d20
CAS :Produit contrôléFormule :C50D20H20O20Couleur et forme :White To Off-WhiteMasse moléculaire :980.96Ethylene Terephthalate Cyclic Pentamer
CAS :<p>Applications Ethylene Terephthalate Cyclic Tetramer is an impurity in the synthesis of Ethylene Terephthalate Cyclic Trimer (E917715). Ethylene Terephthalate Cyclic Trimer can be used as migration indicators into foods and simulants, for microwave-active materials,<br>References Castle, L., et al.: Food Addit. Contam., 7, 779 (1990)<br></p>Formule :C50H40O20Couleur et forme :Light YellowMasse moléculaire :960.841Ethylene terephthalate cyclic pentamer-d20
CAS :<p>The ethylene terephthalate cyclic pentamer is a polyester that is used in the manufacture of polyester fibers and polyester films. It is extracted from the raw material, which is a mixture of dimethyl terephthalate, ethylene glycol, and 1,4-butanediol. The extruder heats the raw material to 240°C in order to convert it into its liquid form. The crystallization process takes place at room temperature and produces a white solid product called oligomer. Extraction removes impurities from the oligomer by washing it with water. Linear polyester is obtained by heating the purified oligomer at 260°C for 40 minutes, while extruded polyester undergoes a heat treatment of 230°C for 20 minutes. Extrusion produces pellets that are then processed into filaments or sheets.</p>Formule :C50H20D20O20Degré de pureté :Min. 95%Masse moléculaire :980.96 g/mol


