Phthalic anhydride
Khoom profile
Phthalic anhydride, ib qho organic compound nrog tshuaj formula C8H4O3, yog cyclic acid anhydride tsim los ntawm lub cev qhuav dej ntawm phthalic acid molecules. Nws yog dawb crystalline hmoov, insoluble nyob rau hauv dej txias, me ntsis soluble nyob rau hauv dej kub, ether, soluble nyob rau hauv ethanol, pyridine, benzene, carbon disulfide, thiab lwm yam, thiab yog ib qho tseem ceeb organic tshuaj raw khoom. Nws yog ib qho tseem ceeb nruab nrab rau kev npaj phthalate plasticizers, coatings, saccharin, dyes thiab organic compounds.
Technical Index
| Specification | Cov qhabnias xeem | |
| Assay | ≥99.5% | 99.8% |
| Maleic Anhydride | ≤ 0.05% | 0 |
| Melting Chroma | ≤ 20 | 5 |
| Thermal stabilization Chroma | ≤ 50 | 15 |
| Sulfuric acid Chroma | ≤ 40 | 5 |
| Qhov tshwm sim | Dawb flakes los yog siv lead ua hmoov | Dawb flakes |
Daim ntawv thov teb:
Phthalic anhydride yog ib qho tseem ceeb ntawm cov organic chemical raw khoom thiab ib qho tseem ceeb nruab nrab ntawm kev npaj phthalate plasticizers, txheej, saccharin, dyes thiab organic compounds.
