1. The solubility in ethylene glycol (MEG) more than 4.8% at 20℃, and increased to 12.5% at 60℃.
2, Catalyst S-21 is low trace metal contents, high purity, used in PET production.
3, Catalyst S-21 can be well dissolved in ethylene glycol, its solution in vacuum can remain stable for a long time.
4, Catalyst S-21 in ethylene glycol solution will only exist as a single structure, so it has a certain stability.
5, Catalyst S-21 can quickly participate in the polymerization chain growth of PET monomer, so as to shorten the catalyst reaction time, and the reaction can be carried out at a lower temperature.
6, Minimize the loss of antimony in ethylene glycol recovery process.
Packaging: Catalyst S-21 is packed in sealed high density polyethylene (HDPE) drums weighing 15 kg net. When transported, each 48 barrels of product are stacked on the card board, plus a covered outer box protection. Packaging standards refer to UN 1H2/Y23/S/USA.
| Index | Spec. |
| Antimony Acetate,% | 99.0~99.6% |
| Arsenic, ppm | 100 Max |
| Lead, ppm | 40 Max |
| Iron, ppm | 15 Max |
| Acetic Acid Value,% | 0.50% |
| Toluene,% | 0.2 Max |
| Color L* | 90 Min |
| Color a* | 3.50 Max |
| Color b* | 3.50 Max |
