p-Phthaloyl chloride , 97% , 100-20-9
CAS NO.：100-20-9
Empirical Formula: C8H4Cl2O2
Molecular Weight: 203.02
MDL number: MFCD00000693
EINECS: 202-829-5
PRODUCT Properties
| Melting point: | 79-81 °C(lit.) |
| Boiling point: | 266 °C(lit.) |
| Density | 1,34 g/cm3 |
| vapor density | 7 (vs air) |
| vapor pressure | 0.02 mm Hg ( 25 °C) |
| refractive index | 1.5684 (estimate) |
| Flash point: | 356 °F |
| storage temp. | 2-8°C |
| solubility | ethanol: 5%, clear |
| form | flakes |
| color | White to Almost white |
| PH | <0.5 (H2O) |
| explosive limit | 1.5-8.9%(V) |
| Water Solubility | REACTS |
| Sensitive | Moisture Sensitive |
| BRN | 607796 |
| InChIKey | LXEJRKJRKIFVNY-UHFFFAOYSA-N |
| CAS DataBase Reference | 100-20-9(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,4-Benzenedicarbonyl dichloride(100-20-9) |
| EPA Substance Registry System | 1,4-Benzenedicarbonyl dichloride (100-20-9) |
Description and Uses
Terephthaloyl chloride acts as a monomer with p-phenylenediamine used in the preparation of polymer viz. poly paraphenylene terephthalamide. It is an active component in performance polymers and aramid fibers, which gives flame resistance, chemical resistance, temperature stability, light weight, and very high strength. It is also used as an effective water scavenger, utilized to stabilize isocyanates and urethane prepolymers. Further, it is used in the preparation of liquid crystalline thermosets by thermal cyclotrimerization of dicyanate compounds of ring substituted bis(4-hydroxyphenyl) terepthalates. In addition to this, it is involved in the condensation reaction with difunctional alfa, μ-diaminopolystyrene to get chain-extended polystyrene containing amide bonds along the polymer backbone.
Safety
| Symbol(GHS) |   GHS05,GHS06 |
| Signal word | Danger |
| Hazard statements | H314-H331-H335 |
| Precautionary statements | P260-P271-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338 |
| Hazard Codes | C,T |
| Risk Statements | 34-23-35 |
| Safety Statements | 26-27-36/37/39-45-38-28B |
| RIDADR | UN 2923 8/PG 3 |
| WGK Germany | 3 |
| RTECS | WZ1797000 |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | II |
| HS Code | 29173980 |
| Hazardous Substances Data | 100-20-9(Hazardous Substances Data) |
