3,3′,4,4′-Benzophenonetetracarboxylic dianhydride CAS 2421-28-5
Physico-chemical Properties
| Molecular Formula |
C17H6O7 |
| Molar Mass |
322.23 |
| Density |
1.662g/cm3 |
| Melting Point |
219-226℃ |
| Boling Point |
638.8°C at 760 mmHg |
| Flash Point |
286.1°C |
| Water Solubility |
REACTS |
| Vapor Presure |
3.25E-16mmHg at 25°C |
| Appearance |
Odor-free light yellow powder solid |
| Storage Condition |
RT, argon filled storage |
| Sensitive |
Humidity sensitivity |
| Refractive Index |
1.699 |
| MDL |
MFCD00005923 |
| Physical and Chemical Properties |
BTDA is a tan crystalline powder. The substance has a melting point of 218.67°C and decomposes at 360°C. The autoignition temperature is very high and no flammability is observed. The density of the substance is 1.5452 g/ml and the vapor pressure is 6.53E-011 Pa. The substance is slightly soluble in water, log Pow is 3.3 |
| Use |
Benzophenone-3. 3 ‘,4.4’-tetracarboxylic dianhydride (BTDA) is used in the industrial field as an intermediate and in polycondensation (fiber and powder production) for the manufacture of plastic products or fine chemicals. Since BTDA is only manufactured and handled in the closed conditions of an industrial environment, the consumer risk is minimal. The environmental impact, Ecotoxicology and toxicology information available for BTDA is provided based on research and/or a reliable assessment of its hazard profile. |
Risk and Safety
| Hazard Symbols |
Xi – Irritant |
| Risk Codes |
R36/37 – Irritating to eyes and respiratory system. |
| Safety Description |
S25 – Avoid contact with eyes. |
Upstream Downstream Industry
| Raw Materials |
Acetone |
| Downstream Products |
2-Hydroxyethyl methacrylate |
Introduction
Reacts with water and dissolves in DMF(1G/10ML).
Nature
| melting point |
218-222°C (lit.) |
| boiling point |
320°C 5mm |
| density |
1.57 g/cm3 |
| vapor density |
1.4 (vs air) |
| Vapor pressure |
|
| refractive index |
1.6380 (estimate) |
| flash point |
324 °C |
| storage conditions |
Inert atmosphere,Room Temperature |
| solubility |
DMF: 0.1 g/mL, clear |
| morphology |
Needles or Crystalline Powder |
| color |
Off-white to brown |
| explosion limit value (explosive limit) |
16% |
| water solubility |
REACTS |
| maximum wavelength (& lambda;max) |
580nm(CH3CN)(lit.) |
| sensitivity |
Moisture Sensitive |
| sublimation point |
220-230 °C |
| BRN |
761777 |
| InChIKey |
VQVIHDPBMFABCQ-UHFFFAOYSA-N |
| NIST chemical information |
Bis-(3-phthalyl anhydride) ketone |
| EPA chemical information |
Benzophenonetetracarboxylic dianhydride |
MSDS
| ACROS |
English |
| SigmaAldrich |
English |
| ALFA |
Chinese |
| ALFA |
English |
Security information
| dangerous goods mark |
Xi |
| hazard category code |
36/37 |
| safety instructions |
25 |
| WGK Germany |
1 |
| F |
21 |
| auto-ignition temperature |
975 °F |
| TSCA |
Yes |
| customs code |
29183000 |
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