| POLYMER CLASS | Polyesters |
| COMMON NAMES | Poly(ethylene terephthalate) |
| STRUCTURE BASED NAME | Poly(oxyethyleneoxyterephthaloyl), Poly[(ethane-1,4-diol)-alt-(terephthalic acid)] |
| ACRONYMS | PET |
| CAS # | 25038-59-9 |
| CurlySMILES | O{-}C(=O)c1ccc(cc1)C(=O)OCC{n+} |
| CAS # | 60088-54-2.107-21-1 |
| COMMON NAMES | Terephthalic acid + Ethylene glycol |
| SMILES | OC(=O)c1ccc(cc1)C(=O)O.OCCO |
| Std. InChI | 1S/C8H6O4/c9-7(10)5-1-2-6(4-3-5)8(11)12/h1-4H,(H,9,10)(H,11,12).1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2 |
| Std. InChIKey | KKEYFWRCBNTPAC-UHFFFAOYSA-N.LYCAIKOWRPUZTN-UHFFFAOYSA-N |
| STRUCTURE |
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| PROPERTY | UNIT | VALUE / RANGE | PREFERRED |
| Molar Volume Vm | mL mol-1 | 143.9 - 144.5 | 144 |
| Density ρ | g mL-1 | 1.33 - 1.48 | 1.34 |
| Solubility Parameter δ | MPa1/2 | 17.8 - 24.8 | 21.2 |
| Molar Cohesive Energy Ecoh | J mol-1 | 45700 - 88700 | 64800 |
| Glass Transition Temperature Tg | K | 338 - 350 | 344 |
| Molar Heat Capacity Cp | J (mol K)-1 | 217 - 224 | 219 |
| Entanglement Molecular Weight Me | g mol-1 | 1450 - 2250 | 1700 |
| Index of Refraction n | none | 1.50 - 1.64 | 1.58 |
| PROPERTY | UNIT | VALUE / RANGE | PREFERRED |
| Molecular Weight of Repeat unit | g mol-1 | 192.17 | |
| Van-der-Waals Volume VvW | mL mol-1 | 96.3 | |
| Molar Volume Vm | mL mol-1 | 134.8 - 147.1 | 141.7 |
| Density ρ | g mL-1 | 1.31 - 1.43 | 1.36 |
| Solubility Parameter δ | MPa1/2 | 21.8 - 22.0 | 21.9 |
| Molar Cohesive Energy Ecoh | J mol-1 | 64100 - 71200 | 68000 |
| Glass Transition Temperature Tg | K | 346 - 361 | 346 |
| Molar Heat Capacity Cp | J (mol K)-1 | 218 - 233 | 223 |
| Entanglement Molecular Weight Me | g mol-1 | 1200 - 2250 | 1700 |
| Index of Refraction n | none | 1.56 - 1.60 | 1.57 |
Last updated: March 27, 2018