Benzilic acid
Synonym(s):Benzilic acid;Diphenylglycolic acid
- CAS NO.：76-93-7
- Empirical Formula: C14H12O3
- Molecular Weight: 228.25
- MDL number: MFCD00004447
- EINECS: 200-993-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-05-25 18:01:02
What is Benzilic acid?
Chemical properties
white powder
The Uses of Benzilic acid
Benzilic Acid is an impurity of Trospium (T892800), a tropine derivative with anticholinergic activity and a antiispasmodic agent.
Definition
ChEBI: Benzilic acid is a 2-hydroxy monocarboxylic acid.
Synthesis Reference(s)
The Journal of Organic Chemistry, 29, p. 1631, 1964 DOI: 10.1021/jo01029a509
Safety Profile
Moderately toxic by subcutaneousroute. Slightly toxic by ingestion. When heated todecomposition it emits acrid smoke and irritating vapors.
Purification Methods
Crystallise benzilic acid from *benzene (ca 6mL/g), or hot H2O. [Beilstein 10 IV 1256.]
Properties of Benzilic acid
| Melting point: | 149-151 °C(lit.) |
| Boiling point: | 180 °C |
| Density | 1.28 |
| refractive index | 1.5805 (estimate) |
| Flash point: | 180°C/22mm |
| storage temp. | Store below +30°C. |
| solubility | 1.41g/l (experimental) |
| form | Powder |
| pka | pKa (25°): 3.036 |
| color | White to cream-white |
| Water Solubility | 1.41 g/L (25 ºC) |
| Merck | 14,1080 |
| BRN | 521402 |
| Stability: | Stable. Incompatible with strong oxidizing agents. Combustible. |
| CAS DataBase Reference | 76-93-7(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzeneacetic acid, «alpha»-hydroxy-«alpha»-phenyl-(76-93-7) |
| EPA Substance Registry System | Benzilic acid (76-93-7) |
Safety information for Benzilic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P405:Store locked up. P403+P233:Store in a well-ventilated place. Keep container tightly closed. |
Computed Descriptors for Benzilic acid
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