Terephthalic Acid
PTA,Purified Terephthalic Acid
| SPECIFICATION | ||
| Specification | ||
| Acid number (mg KOH/gm) | : | 675±1 |
| 4-CBA (ppm w/w ) | : | max 10 |
| p-Toluic acid (ppm w/w) | : | max 150 |
| Water (% w/w) | : | max 0.15 |
| b*(colour) | : | max 0.8 |
| APHA colour(2N KOH) | : | max 8 |
| Ash(ppm w/w) | : | max 6 |
| Metals (ppm w/w) | : | None greater than 0.3 and in total max 2 |
| Median particle size (um) | : | 120±20 |