CADMA
Chloroacetaldehyde dimethyl acetal
CAS: 97-97-2
Molecular Formula: C4H9ClO2
CADMA - Names and Identifiers
| Name | Chloroacetaldehyde dimethyl acetal |
| Synonyms | CADMA METHYL CHLOROACETAL Dimethylchloroacetal chlorodimethylacetal Dimethyl chloroacetal CHLORODIMETHYL ACETAL Etoxazole intermediate Chlorinated dimethyl acetal 1-chloro-2,2-dimethoxyethane 2-Chloro-1,1-dimethoxyethane 2-chloro-1,1-dimethoxyethane,95+ Chloroacetaldehyde dimethylacetal Chloroacetaldehyde dimethyl acetal CHLOROACETALDEHYDE DIMETHYL ACETAL |
| CAS | 97-97-2 |
| EINECS | 202-624-0 |
| InChI | InChI=1/C4H9ClO2/c1-6-4(3-5)7-2/h4H,3H2,1-2H3 |
| InChIKey | CRZJPEIBPQWDGJ-UHFFFAOYSA-N |
CADMA - Physico-chemical Properties
| Molecular Formula | C4H9ClO2 |
| Molar Mass | 124.57 |
| Density | 1.094g/mLat 25°C(lit.) |
| Melting Point | -73 °C |
| Boling Point | 128-130°C(lit.) |
| Flash Point | 84°F |
| Water Solubility | 52 g/L (20 ºC) |
| Solubility | 52g/l |
| Vapor Presure | 54-449hPa at 50-100℃ |
| Appearance | Liquid |
| Color | Clear colorless to yellow |
| BRN | 1733700 |
| PH | 3.4 (10g/l, H2O, 20℃) |
| Storage Condition | Flammables area |
| Sensitive | Moisture Sensitive |
| Explosive Limit | 2.3%(V) |
| Refractive Index | n20/D 1.415(lit.) |
| Physical and Chemical Properties | Boiling point 128-130 ℃, relative density 1.094, refractive index 1.4148, flash point 28 ℃. |
CADMA - Risk and Safety
| Risk Codes | R10 - Flammable R22 - Harmful if swallowed R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R40 - Limited evidence of a carcinogenic effect R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S28A - S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S16 - Keep away from sources of ignition. S36 - Wear suitable protective clothing. S23 - Do not breathe vapour. |
| UN IDs | UN 1989 3/PG 3 |
| WGK Germany | 2 |
| FLUKA BRAND F CODES | 1 |
| TSCA | Yes |
| HS Code | 29110000 |
| Hazard Class | 3 |
| Packing Group | III |
CADMA - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | chloroacetaldehyde dimethanol, also known as chloroacetaldehyde dimethyl acetal, can be used as pesticides, pharmaceuticals, organic synthesis raw materials, it is also used in the synthesis of liquid crystals. It can also be used for the production of paper, paperboard and starch modifier, etc., is an important chemical raw materials. |
| preparation method | the preparation method of chloroacetaldehyde dimethanol is disclosed, mainly including (1) using acetaldehyde and methanol as raw materials, the reaction is carried out, and then chlorine gas is introduced at 40 ° C., and finally the excess chlorine is neutralized with lime milk;(2) a high concentration aqueous solution of monochloroacetaldehyde and methanol, dehydrated under the action of anhydrous calcium chloride;(3) with vinyl chloride as raw material, reaction with chlorine in methanol solution, using temperature control to reduce side reactions;(4) with high concentration of vinyl acetate aqueous solution as raw material, reaction with chlorine, ethyl dichloroacetate, in 50~60 deg C hydrolysis. |
| Use | pharmaceutical intermediates. |
| production method | from acetaldehyde by condensation, chlorination. Acetaldehyde was added to methanol, and chlorine was applied at 38-40 °c, followed by reaction at 40-43 °c for 3H. The temperature was cooled to 25-30 ° C., neutralized with lime to pH 7, and the mixture was allowed to stand and layered, and the upper layer was chloroacetaldehyde dimethanol. |
Last Update：2024-04-09 21:04:16
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