| Items | Specification | Results |
| Appearance | white flake solid | white flake |
| Neopentyl glycol, % | 99 min | 99.2% |
| Melting point, ℃ | 126–130 | 128.5 |
| Water content, % | 0.5 max | 0.1% |
| Color (Hazen, melt) | 20 max | 10 |
| Ash, % | 0.01 max | 0.005% |
Neopentanediol (neopentyl glycol, NPG) is a sterically hindered diol that brings outstanding weatherability, chemical resistance and thermal stability to the polymers made from it.
Supply and service. Neopentanediol from Dongying EastChem ships in 25 kg bags (palletized), custom packaging on request. Nineteen years of chemical manufacturing across three subsidiaries keeps bulk supply stable year-round: minimum order one 20′ container, samples dispatched in about 2 days, T/T or L/C payment, and a batch-specific COA with every shipment. Combine with our liquid glycols (propylene glycol) for mixed resin-raw-material containers. Contact our sales team for current specifications, pricing and delivery schedules.