Chloroacetic acid, is a white or pale yellow crystals carboxylic acid with irritant smell mainly used in manufacturing a variety of products including carboxymethyl cellulose, herbicides, pharmaceuticals,dyes,cosmetics,plastic stabilizers,anesthetics,tranquilizers and amphoteric surfactants as one of the fine chemical intermediates.
Basic information
| Chinese name | Chloroacetic acid | Water soluble | Soluble |
| Foreign name | Chloroacetic acid | Density | 1.58 g/cm³ |
| Alias | monochloroacetic acid,Chloroacetic acid | Exterior | white crystalline powder |
| Chemical formula | C2H3CIO2 | Flash point | 71.5 ℃ |
| Molecular weight | 94.497 | Security description | S16；S23；S26；S36/37；S45；S61 |
| Cas Number | 79—11—8 | Hazard symbol | T |
| EINECS Number | 201—178—4 | Hazard statement | R25；R34；R50 |
| Boiling point | 189 ℃(at 760 mmHg) | UN dangerous goods number | 1751 |
Details
1、Regulatory information: Chloroacetic acid (very toxic)
2、This product is under the control of the public security department in accordance with the "Regulations on the Safety Management of Hazardous Chemicals".
3、Chinese name: chloroacetic acid, monochloroacetic acid
4、English alias:Chloroacetic acid ， Monochloroacetic acid ，Carboxymethyl chloride
Physical and chemical properties
1、Main ingredients: content: superior product: ≥99.0%; first-class product ≥97.5%; qualified product ≥96.0%.
2、Appearance and properties: colorless crystal, deliquescent.
3、Melting point (℃):61-63
4、Boiling point (℃): 188
5、Relative density (water=1): 1.58 (20/20℃)
6、Relative vapor density (air=1):3.26
7、Saturated vapor pressure (kPa): 0.67 (71.5°C)
8、Ignition temperature (℃):>500
9、Lower explosion limit %(V/V):8.0
10、Solubility: Soluble in water, ethanol, ether, chloroform, carbon disulfide.
11、Properties: Colorless or white deliquescent crystals. It exists in three forms: α, β, and γ. Soluble in water, soluble in ethanol, ether, benzene, carbon disulfide and chloroform. The relative density is 1.580. Melting point 63°C (α type), 55~56°C (β type), 50°C (γ type). The boiling point is 189°C. Moderate toxicity, the median lethal dose (rat, oral) 76mg/kg. Corrosive.
Storage conditions
Store in a cool, dry place away from light.
Chloroacetic acid is packaged in a polypropylene woven bag lined with a double-layer plastic bag. During transportation, prevent direct sunlight, (rain, etc.) moisture, and damage to the package. It should be stored in a cool, ventilated and dry place, away from fire and heat sources, and should be stored separately from oxides, alkalis, flammables and other items. The shelf life is one year at room temperature, and it is not suitable for long-term storage in summer when the temperature is high.
The main purpose
Determination of zinc, calcium, silicon and titanium. Synthesis of caffeine, epinephrine, glycine, naphthaleneacetic acid. Make various dyes. Rust Remover.
For the preparation of pesticides and organic synthesis intermediates. Used as an acidulant for starch adhesives. It is also an intermediate of dyes, medicines, pesticides, synthetic resins and other organic synthetic materials. It is used in the dye industry to produce indigo dye. Chloroacetic acid is also an important carboxymethylating agent, used to prepare sodium carboxymethylcellulose, ethylenediaminetetraacetic acid, etc., and also used as non-ferrous metal flotation agent and chromatographic analysis reagent.
1、Used in the manufacture of carboxymethyl cellulose (CMC).
2、In the pharmaceutical industry, it is used to prepare intermediates for the synthesis of caffeine, epinephrine, aminoacetic acid, vitamin B6, and aureomycin.
3、In the pesticide industry, it is used as an intermediate for the preparation of dimethoate, naphthalene acetic acid, thiocyanoacetic acid, isostyl ester, herbicides 2, 4D, and herbicides.
4、Used in the dye industry to produce indigo and naphthalene aminoacetic acid dyes.
5、Intermediates used in the preparation of carboxymethyl cellulose and the synthesis of analytical chemical reagents.
Preparation method: It is prepared by the action of chlorine and acetic acid in the presence of catalysts such as phosphorus and sulfur. It can also be obtained by hydration of trichlorethylene or oxidation of chlorohydrin.