Diphenic anhydride
Synonym(s):2,2′-Biphenyldicarboxylic acid anhydride;Diphenic acid anhydride
- CAS NO.：6050-13-1
- Empirical Formula: C14H8O3
- Molecular Weight: 224.21
- MDL number: MFCD00004993
- EINECS: 227-950-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:24:41
What is Diphenic anhydride?
Chemical properties
Powder
Purification Methods
After removing free acid by extraction with cold aqueous Na2CO3, the residue is crystallised from acetic anhydride and dried at 100o. Acetic anhydride converts the acid to the anhydride. It also crystallises from *C6H6 (m 219o) or chlorobenzene (m 224.5-225.5o). [Beilstein 17 H 526, 17 II 495, 17 III/IV 6425.]
Properties of Diphenic anhydride
| Melting point: | 225-227 °C (lit.) |
| Boiling point: | 325.61°C (rough estimate) |
| Density | 1.2337 (rough estimate) |
| refractive index | 1.5400 (estimate) |
| storage temp. | Inert atmosphere,Room Temperature |
| form | Crystalline Powder or Flakes |
| color | White to beige or grayish-brown |
| Water Solubility | decomposes |
| Sensitive | Moisture Sensitive |
| BRN | 171255 |
| CAS DataBase Reference | 6050-13-1(CAS DataBase Reference) |
| NIST Chemistry Reference | 2,2'-Biphenyldicarboxylic anhydride(6050-13-1) |
| EPA Substance Registry System | Dibenz[c,e]oxepin-5,7-dione (6050-13-1) |
Safety information for Diphenic anhydride
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for Diphenic anhydride
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