1514-87-0
Methyl chlorodifluoroacetate
CAS: 1514-87-0
Molecular Formula: C3H3ClF2O2
1514-87-0 - Names and Identifiers
| Name | Methyl chlorodifluoroacetate |
| Synonyms | CHLORODIFLUOROACETATE Methyl chlorodifluoroacetate METHYL CHLORODIFLUOROACETATE METHYL DIFLUOROCHLOROACETIC ACID chlorodifluoro-aceticacimethylester METHYL 2-CHLORO-2,2-DIFLUOROACETATE CHLORODIFLUOROACETIC ACID METHYL ESTER Acetic acid, chlorodifluoro-, methyl ester Acetic acid, 2-chloro-2,2-difluoro-, methyl ester |
| CAS | 1514-87-0 |
| EINECS | 216-154-9 |
| InChI | InChI=1S/C3H3ClF2O2/c1-8-2(7)3(4,5)6/h1H3 |
| InChIKey | AWUPLMYXZJKHEG-UHFFFAOYSA-N |
1514-87-0 - Physico-chemical Properties
| Molecular Formula | C3H3ClF2O2 |
| Molar Mass | 144.5 |
| Density | 1.37g/mLat 25°C(lit.) |
| Boling Point | 79-81°C(lit.) |
| Flash Point | 67°F |
| Appearance | Liquid |
| Specific Gravity | 1.371 |
| Color | Clear colorless |
| BRN | 1756072 |
| Storage Condition | Keep in dark place,Inert atmosphere,2-8°C |
| Sensitive | Moisture Sensitive |
| Refractive Index | n20/D 1.349(lit.) |
1514-87-0 - Risk and Safety
| Risk Codes | R11 - Highly Flammable R34 - Causes burns R37 - Irritating to the respiratory system |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2924 3/PG 2 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 19 |
| TSCA | Yes |
| HS Code | 29159000 |
| Hazard Note | Highly Flammable/Moisture Sensitive |
| Hazard Class | 3 |
| Packing Group | II |
1514-87-0 - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | 2-chloro-2, 2-difluoroacetic acid methyl ester can be used to prepare difluoroacetic acid methyl ester, difluoroacetic acid ester is mainly used as pesticide, the intermediates of medicine and fluorine-containing fine chemicals can also be used as solvents in lithium battery electrolytes. |
| preparation | using two-stage tandem-connected 200L enamelled jacketed spray Towers A and B, spray tower A and B were respectively filled with 125L ceramic packing, and 720mol(23069g,29L) Methanol was introduced into the liquid storage area (100L) of spray tower A and B, where spray tower A is the first-class spray tower, spray tower B is a secondary spray tower. The raw material CClF2COCl stream 1 was added to spray tower A at A rate of 1.5mol/min (127050g/min), and 750mol (g) of difluorochloroacetyl chloride was added for 1H, stream 2 methanol was added as A spray to spray tower A at an initial rate of 2mol/min(92g/min). In the spray Tower A, the temperature in the tower is controlled at about 20 ℃, and the pressure in the tower is controlled at about normal pressure, so that CClF2COCl and methanol are contacted and reacted in the filler area in the reverse direction, the residence time of CClF2COCl in the filler zone is about 3.7min. In spray Tower A, stream 3 containing unreacted CClF2COCl is obtained at the top of the tower, stream 3 enters spray Tower B at initial 1mol/min(46g/min). To the spray Tower B in the form of a spray of 5 methanol, The temperature in the column is controlled at about 15 ℃, and the pressure in the column is controlled at about normal pressure, so that CClF2COCl and methanol are contacted and reacted in the reverse direction in the packing area. In spray Tower A, the tail gas of stream 6 is obtained at the top of the tower. After continuous addition of CClF2COCl 8.3H to spray Tower A, A total of 750mol(127050g) of CClF2COCl is added to spray Tower A, and the addition of CClF2COCl to spray tower A is stopped, at the bottom of the column, a stream 4 containing the product ethyl diethyl acetate was obtained. At the same time, CClF2COCl was switched to spray Tower B to continue the reaction, and the fully reacted stream 4 in spray tower A was led out at one time, and then 720mol of methanol was introduced into the liquid storage area of spray tower A at one time. According to the chromatographic calculation results of accumulated products in spray tower A and B: Conversion of difluorochloroacetyl chloride 99.8%, selectivity of methyl 2-chloro-2, 2-difluoroacetate 99.9%, selectivity of 2-chloro-2, the calculated yield of methyl 2-difluoroacetate was 99.7%, and the mass content of methanol in the product was 1.2%. |
Last Update：2024-04-09 15:16:45
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