Isooctyl thioglycolate

Isooctyl thioglycolate (CAS 25103-09-7) is a sulfur-containing ester supplied under trade names including IOTG and Evabopol 198. It carries no E-code designation and is classified under HS code 29309090. The compound is also referenced as isooctylmercaptoacetate in technical and regulatory documentation.

In PVC and polymer processing, isooctyl thioglycolate functions as a co-stabilizer and plasticizer, scavenging hydrogen chloride released during thermal degradation to delay discoloration and embrittlement. It also serves as a chain-transfer agent in free-radical polymerization, controlling molecular weight distribution. In metalworking lubricants, its sulfur functionality provides boundary lubrication under high-pressure contact conditions.

Isooctyl thioglycolate is available as a technical-grade liquid and is subject to REACH registration requirements within the European Economic Area. Suppliers typically offer the material in drums and intermediate bulk containers. Buyers should request a current safety data sheet and confirm compliance documentation before procurement.