Introduction
Bis-(2-ethoxy)ethyl peroxydicarbonate (CAS 763-69-9) is a peroxydicarbonate initiator with enhanced solubility characteristics conferred by the ethoxyethyl substituents. This structural feature makes it particularly effective for low-temperature polymerization processes where initiator solubility and distribution in the monomer phase are critical to achieving consistent reaction kinetics and product quality.
Key Facts
- CAS Number: 763-69-9
- Appearance: Colorless to pale yellow liquid or low-melting solid
- 10-Hour Half-Life Temperature: ~40-45 deg C
- Storage: Deep refrigerated, typically below -10 deg C
Applications
PVC Polymerization
This peroxydicarbonate is employed as a low-temperature initiator for suspension PVC, particularly in processes targeting high K-value (high molecular weight) resin grades. The ethoxyethyl substituents enhance solubility in VCM, promoting uniform initiator distribution and consistent polymerization rates throughout the reactor volume.
Copolymer Production
Its solubility characteristics also make it suitable for vinyl chloride-vinyl acetate copolymerization and other specialty vinyl polymer processes requiring low-temperature initiation.
Safety
As with all peroxydicarbonates, this compound requires deep refrigerated storage and transport. Standard organic peroxide handling protocols apply, with particular emphasis on temperature control, avoidance of contamination, and use of explosion-proof equipment.
Q: What advantage do ethoxyethyl groups provide?
A: The ether oxygen atoms in the ethoxyethyl substituents improve solubility in polar monomers and solvents compared to simple alkyl peroxydicarbonates. This enhanced solubility promotes more uniform initiator distribution in the polymerization medium, contributing to consistent reaction kinetics and improved polymer particle morphology.
Key Takeaways
- Bis-(2-ethoxy)ethyl peroxydicarbonate (CAS 763-69-9) offers enhanced solubility for low-temperature PVC polymerization.
- It requires deep refrigerated storage and stringent temperature control throughout the supply chain.
- Shandong Do Sender Chemicals supplies peroxydicarbonate initiators with comprehensive cold chain logistics.