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937-20-2

Basic Information
CAS No.: 937-20-2
Name: 2,4'-Dichloroacetophenone
Article Data: 76
Molecular Structure:
Molecular Structure of 937-20-2 (2,4'-Dichloroacetophenone)
Formula: C8H6Cl2O
Molecular Weight: 189.041
Synonyms: 4-Chloroaphenacyl chloride;2,4-Dichloro Acetophenone;2-chloro-4-chloroacetophenone;2-chloro-4’-chloroacetophenone;Ethanone, 2-chloro-1- (4-chlorophenyl)-;ethanone, 2-chloro-1-(4-chlorophenyl)-;.alpha.-Chloro-p-chloroacetophenone;2-chloro-1-(4-chlorophenyl)ethanone;Acetophenone, 2,4-dichloro-;4-Chlorophenacyl chloride;p-Chlorophenacyl chloride;.omega.-Chloro-p-chloroacetophenone;
EINECS: 213-323-9
Density: 1.31 g/cm3
Melting Point: 100-102 °C(lit.)
Boiling Point: 270 °C at 760 mmHg
Flash Point: 119.1 °C
Appearance: white to off-white crystalline powder
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 26-36-37/39
PSA: 17.07000
LogP: 2.76150
Synthetic route
99-91-2

para-chloroacetophenone

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
With 1,3-dichloro-5,5-dimethylhydantoin; silica gel In methanol for 1h; Reflux;98%
With N,N,N-trimethylbenzenemethanaminium dichloroiodate In methanol; 1,2-dichloro-ethane for 6h; Heating;97%
With tetrachlorosilane; urea hydrogen peroxide adduct In dichloromethane at 0℃; for 1h;93%
5333-82-4

2,2,2-trichloro-1-(4-chloro-phenyl)-ethanol

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
With [2,2]bipyridinyl; copper(l) chloride In 1,2-dichloro-ethane for 3h; Heating;93%
80-11-5

N-methyl-N-nitrosotoluene-p-sulfonamide

122-01-0

4-chloro-benzoyl chloride

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
With potassium hydroxide In tetrahydrofuran; methanol; water at 20℃; Arndt-Eistert Homologation;93%
33491-02-0

1-chloro-4-(chloroethynyl)benzene

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
With water In 1,2-dichloro-ethane at 20℃; for 14h;93%
With water; silver fluoride; trifluoroacetic acid at 40℃; for 6h; Green chemistry;88%
With tetrafluoroboric acid; water In 2,2,2-trifluoroethanol at 80℃; for 10h;87%
With indium(III) triflate; water In acetic acid at 100℃; Sealed tube;79%
1073-67-2

4-vinylbenzyl chloride

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
With magnesium(II) chloride hexahydrate; oxygen; lithium perchlorate; manganese(ll) chloride In dichloromethane; acetone at 40℃; for 40h; Electrochemical reaction;93%
With magnesium(II) chloride hexahydrate; cobalt(II) chloride hexahydrate; oxygen; lithium perchlorate In dichloromethane; acetone at 40℃; for 12h; Electrolysis; Sealed tube; chemoselective reaction;77%
With tris(2,2'-bipyridyl)ruthenium dichloride; chloroform; [bis(acetoxy)iodo]benzene In chloroform at 20℃; for 12h; Irradiation;77%
With iron(III) chloride; potassium chloride; oxygen; toluene-4-sulfonic acid In tert-butyl methyl ether at 20℃; Irradiation; Green chemistry;49%
676486-15-0

1-(4-chlorophenyl)-2-(dimethyl(oxo)-λ6-sulfanylidene)ethan-1-one

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
With hydrogenchloride In tetrahydrofuran; 1,4-dioxane at 20 - 70℃; for 16h;92%
With hydrogenchloride In tetrahydrofuran; 1,4-dioxane at 20 - 70℃;78%
3391-10-4

1-(p-chlorophenyl)ethyl alcohol

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
With methanol; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; trichloroisocyanuric acid In dichloromethane at 20℃; for 2h; Reagent/catalyst;87%
With N,N-dichloro-p-toluenesulfonamide In acetonitrile at 55℃; for 3.5h;79%
With hydrogenchloride; 3-chloro-benzenecarboperoxoic acid In N,N-dimethyl-formamide at 25℃; for 6h;84 % Chromat.
5391-88-8

1-(4-bromophenyl)ethanol

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
With methanol; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; trichloroisocyanuric acid In dichloromethane at 20℃; for 2h; Reagent/catalyst;87%
79-04-9

chloroacetyl chloride

108-90-7

chlorobenzene

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
aluminium trichloride In carbon disulfide for 2h; Heating;84%
With carbon disulfide; aluminium trichloride
With aluminium trichloride In carbon disulfide
536-38-9

4-chlorobenzoylmethyl bromide

937-20-2

p-chlorophenacyl chloride

Conditions
ConditionsYield
With S4N4*SbCl5 In toluene for 3.5h; Heating;81%
With sodium chloride In acetonitrile
With N-benzyl-N,N,N-triethylammonium chloride; benzenesulfonyl chloride In water at 20℃; for 1.3h; Solvent; Green chemistry;
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Chemistry

IUPAC Name: 2-Chloro-1-(4-chlorophenyl)ethanone 
Following is the structure of 2,4'-Dichloroacetophenone (CAS NO.937-20-2):
                     
Empirical Formula: C8H6Cl2O
Molecular Weight: 189.0386 g/mol
EINECS: 213-323-9
Index of Refraction: 1.55
Molar Refractivity: 46.02 cm3
Molar Volume: 144.2 cm3
Density: 1.31 g/cm3
Flash Point: 119.1 °C
Melting point 100-102 °C
Surface Tension: 41.7 dyne/cm
Enthalpy of Vaporization: 50.82 kJ/mol
Boiling Point: 270 °C at 760 mmHg
Vapour Pressure: 0.00702 mmHg at 25 °C
Product Categories of 2,4'-Dichloroacetophenone (CAS NO.937-20-2): Benzene series; C7 to C8; Carbonyl Compounds; Ketones
Solubility in water of 2,4'-Dichloroacetophenone (CAS NO.937-20-2): Insoluble
Canonical SMILES: C1=CC(=CC=C1C(=O)CCl)Cl
InChI: InChI=1S/C8H6Cl2O/c9-5-8(11)6-1-3-7(10)4-2-6/h1-4H,5H2
InChIKey: FWDFNLVLIXAOMX-UHFFFAOYSA-N

Toxicity Data With Reference

 2,4'-Dichloroacetophenone (CAS NO.937-20-2) hasn't been listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65. And the toxicological properties have not been fully investigated.

Safety Profile

Hazard Codes: IrritantXi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-37/39 
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.
WGK Germany: 3

Specification

 2,4'-Dichloroacetophenone , its cas register number is 937-20-2. It also can be called 2-Chloro-1-(4-chlorophenyl)ethanone ; Ethanone, 2-chloro-1-(4-chlorophenyl)- .
 2,4'-Dichloroacetophenone (CAS NO.937-20-2) is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Wash mouth out with water, and get medical aid immediately. 
 2,4'-Dichloroacetophenone (CAS NO.937-20-2) should avoid the condition like incompatible materials, dust generation. It is not compatible with strong oxidizing agents. And also prevent it to broken down into hazardous decomposition products: hydrogen chloride, carbon monoxide, carbon dioxide. However, its hazardous polymerization has not been reported. Store in a tightly closed container. In addition,  2,4'-Dichloroacetophenone (CAS NO.937-20-2) should be stored in a cool, dry, well-ventilated area away from incompatible substances.