2421-28-5
3,3',4,4'-Benzophenonetetracarboxylic dianhydride
CAS: 2421-28-5
Molecular Formula: C17H6O7
2421-28-5 - Names and Identifiers
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. |
2421-28-5 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37 - Irritating to eyes and respiratory system. |
| Safety Description | S25 - Avoid contact with eyes. |
2421-28-5 - Upstream Downstream Industry
| Raw Materials | Acetone |
| Downstream Products | 2-Hydroxyethyl methacrylate |
2421-28-5 - Introduction
Reacts with water and dissolves in DMF(1G/10ML).
Last Update：2022-10-16 17:15:12
2421-28-5 - 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 | <0.1mm Hg ( 0 °C) |
| 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(2421-28-5) |
| EPA chemical information | Benzophenonetetracarboxylic dianhydride (2421-28-5) |
Last Update：2024-04-10 22:29:15
2421-28-5 - MSDS
| ACROS | English |
| SigmaAldrich | English |
| ALFA | Chinese |
| ALFA | English |
Last Update：2024-04-10 22:29:15
2421-28-5 - Uses and synthesis methods
| Introduction | Benzophenone-3, 3 ',4,4'-tetracarboxylic dianhydride (BTDA) is used as an intermediate and polycondensation (fiber and powder production) in the industrial field to make plastic products or fine chemicals. Since BTDA is only manufactured and handled under closed conditions in an industrial environment, the consumer risk is minimal. The environmental impact, ecotoxicology and toxicology information available to BTDA is provided based on research and/or reliable assessment of its hazard characteristics. |
| physical and chemical properties | BTDA is a brown 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. |
| application | BTDA is used in the industrial sector as an intermediate in the manufacture of plastic products or fine chemicals. |
| health hazards |
BTDA has no acute toxicity through oral and inhalation routes or skin contact. The substance irritates the eyes and respiratory tract. BTDA is sensitive to skin. BTDA is not mutagenic. BTDA is used as an intermediate and polycondensed with BTDA (fiber and powder production) to manufacture plastic products or fine chemicals in the industrial field. The use of BTDA includes the use in closed systems and mixing and mixing in batch processes, as well as the transfer or transfer of substances from containers or large and small containers to containers or large containers. |
| use | Polymerized monomer, used to synthesize polymeric monomer of high temperature resistant polymer materials. |
Last Update：2024-04-10 22:29:15
2421-28-5 - 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 |
Last Update：2024-04-10 22:29:15
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View History
Raw Materials for 2421-28-5
Downstream Products for 2421-28-5