HuagongsheHuagongshe Chemistry Print Report · For research reference only
Tetraethylene Glycol → Heptaethylene glycol
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Tetraethylene Glycol | HCID 8200 | — |
| Reactant | Sodium benzenesulfonate | HCID 517327 | — |
| Reactant | Sodium | HCID 5360545 | — |
| Reactant | 2-(2-(2-Hydroxyethoxy)ethoxy)ethyl benzenesulfonate | HCID 21316325 | — |
| Product | Heptaethylene glycol | HCID 79718 | — |
Reaction Steps
Dissolve one equivalent of sodium in at least 5 equivalents of tetraethylene glycol and then add one equivalent of triethylene glycol monobenzenesulfonate. Heat the resulting solution at 100° to 150°C until the elimination of sodium benzene sulfonate is substantially complete. Remove the insoluble sulfonate salt by filtration and fractionally distill the resulting product in vacuo to obtain heptaethylene glycol as the higher boiling fraction.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03966766 |
| Source dataset | uspto-grants-1976_06 |
| ORD ID | ord-4508245185b04a7e814ced95acb02b5f |
| Source note | uspto-grants-1976_06 |