Benzilic Acid Benzilic Acid
Structural formula
| Business number | 01LK |
|---|---|
| Molecular formula | C14H12O3 |
| Molecular weight | 228.24 |
| label |
2-Hydroxy-2,2-diphenylacetic acid, α-Hydroxy-α-phenylacetic acid, diphenylglycolic acid, Benzilic acid, 2,2-diphenyl-2-hydroxyacetic acid, Diphenylglycolic acid, (C6H5)2C(OH)COOH |
Numbering system
CAS number:76-93-7
MDL number:MFCD00004447
EINECS number:200-993-2
RTECS number:DD2064000
BRN number:521402
PubChem number:24847470
Physical property data
1. Character: white monoclinic needle crystal
2. Density (g/mL,25/4℃): Unsure
3. relative steam Density (g/mL,Air=1) : Unsure
4. Melting point (ºC):151 -152℃
5. Boiling point (ºC,Normal pressure): Uncertain
6. Boiling point (ºC,5.2kPa): Unsure
7. Refractive index: Uncertain
8. Flash Point (ºC): Unsure
9. Specific optical rotation (º): Unsure
10. Autoignition point or ignition temperature (ºC): Unsure
11. Vapor pressure (kPa,25ºC): Unsure
12. 11. Determine the number of atomic stereocenters: 0
12. Uncertain number of atomic stereocenters:0
13. Determine the number of stereocenters of chemical bonds:0
14. Uncertain number of chemical bond stereocenters:0
15. Number of covalent bond units:1
Properties and stability
None yet
Storage method
This product should be kept sealed.
Synthesis method
Originated from benzoin through oxidation and transposition. Benzoin is oxidized with nitric acid to obtain bibenzoyl, which is added to the sodium hydroxide solution. -font-family: Tahoma”>100-110℃Reaction6h, dilute with water, and then adjust with dilute sulfuric acid pHTo3.5-4.0. Remove the floating oil and add activated carbon to decolorize0.5h, Filter, add sulfuric acid to the filtrate to pHpHValue is2, filtered, washed, and dried to obtain the finished product. Another method is to react benzoin with potassium bromate: combine benzoin, water, sodium hydroxide, and potassium bromate in a solution. Verdana; mso-bidi-font-family: Tahoma”>80-90℃Stir reaction3h, and then use 2Dilute with water and add dilute sulfuric acid to neutralize pHValue is8, filter out the insoluble matter, and acidify the filtrate with hydrochloric acid untilpH<SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体 ;
Purpose
Stomach Rehabilitation intermediate. Zirconium can also be determined.
so-hansi-font-family: Verdana; mso-bidi-font-family: Tahoma”>, dilute with water, and then adjust with dilute sulfuric acidpHto3.5-4.0. Remove the floating oil and add activated carbon to decolorize0.5h, filter, add sulfuric acid to the filtratepHThe value is2 , filter, wash and dry to obtain the finished product. Another method is to react benzoin with potassium bromate: combine benzoin, water, sodium hydroxide, and potassium bromate in a solution. Verdana; mso-bidi-font-family: Tahoma”>80-90℃Stir reaction3h, and then use 2Dilute with water and add dilute sulfuric acid to neutralize pHValue is8, filter out the insoluble matter, and acidify the filtrate with hydrochloric acid untilpH<SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体 ;
Purpose
Stomach Rehabilitation intermediate. Zirconium can also be determined.