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2-Chloroacetophenone structure
Chemical Name:
CN;cn[qr];caf[qr];cap[qr];teargas;phenacyl;mace[qr];Tear Gas;NCI-C55107;PEPPERSPRAY
Molecular Formula:
Formula Weight:
MOL File:

2-Chloroacetophenone Properties

Melting point:
54-56 °C(lit.)
Boiling point:
244-245 °C(lit.)
1.324 g/mL at 25 °C(lit.)
vapor pressure 
4 at 20 °C, 14 at 30 °C (quoted, Verschueren, 1983)
refractive index 
Flash point:
Soluble in acetone (Weast, 1986). Freely soluble in alcohol, benzene, and ether (Windholz et al., 1983)
Water Solubility 
insoluble. <0.1 g/100 mL at 19 ºC
Moisture Sensitive
Exposure limits
NIOSH REL: TWA 0.3 mg/m3 (0.05 ppm), IDLH 15 mg/m3; OSHA PEL: TWA 0.05 ppm (0.3 mg/m3); ACGIH TLV: TWA 0.05 ppm (adopted).
May decompose upon exposure to air or water. Incompatible with bases, amines, alcohols.
CAS DataBase Reference
532-27-4(CAS DataBase Reference)
NIST Chemistry Reference
Ethanone, 2-chloro-1-phenyl-(532-27-4)
EPA Substance Registry System
Ethanone, 2-chloro-1-phenyl-(532-27-4)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H300-H311+H331-H315-H318-H334-H335-H317-H319-H331
Precautionary statements  P280a-P301+P310a-P405-P501a-P261-P264-P280-P301+P310-P305+P351+P338-P311
Hazard Codes  T
Risk Statements  25-36/37/38-42/43-23/25-36-23/24/25
Safety Statements  22-26-36/37/39-45-28A-7/9
RIDADR  UN 1693 6.1/PG 2
WGK Germany  3
RTECS  AM6300000
HazardClass  6.1
PackingGroup  II
Toxicity LD50 in rats (mg/kg): 41 i.v., 36 i.p., 127 orally; LC50 in rats: 8750 mg/min/m3 (Ballantyne, Swanston)

NFPA 704

Diamond Hazard Value Description
3 0
Health   3 Short exposure could cause serious temporary or moderate residual injury (e.g. liquid hydrogen, sulfuric acid, calcium hypochlorite, hexafluorosilicic acid)
Flammability   1 Materials that require considerable preheating, under all ambient temperature conditions, before ignition and combustion can occur. Includes some finely divided suspended solids that do not require heating before ignition can occur. Flash point at or above 93.3 °C (200 °F). (e.g. mineral oil, ammonia)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)

(NFPA, 2010)

2-Chloroacetophenone price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 77460 2-Chloroacetophenone purum, ≥98.0% (GC) 532-27-4 100g $46.8 2018-11-20 Buy
Sigma-Aldrich 77460 2-Chloroacetophenone purum, ≥98.0% (GC) 532-27-4 500g $98.7 2018-11-20 Buy
Alfa Aesar A10749 2-Chloroacetophenone, 98% 532-27-4 100g $53.5 2018-11-13 Buy
Alfa Aesar A10749 2-Chloroacetophenone, 98% 532-27-4 500g $217 2018-11-13 Buy
Sigma-Aldrich C19686 2-Chloroacetophenone 98% 532-27-4 100g $46.8 2018-11-20 Buy

2-Chloroacetophenone Chemical Properties,Uses,Production

Chemical Properties

tan crystalline powder

Chemical Properties

2-Chloroacetophenone (CN) is a combustible, colorless-to-gray solid. CN has a sharp, irritating odor, has been described as smelling like “apple blossoms.” It may be dissolved in a solvent

Physical properties

Colorless to gray crystalline solid with a sharp, penetrating, irritating odor. The low odor and high odor threshold concentrations were 102 and 150 μg/m3, respectively (Ruth, 1986).


Riot control agent.


A strong lachrymator.

General Description

Colorless liquid, odorless to fruity.


Strong irritant to eyes and tissue as gas or liquid. Skin and upper respiratory tract irritant. Questionable carcinogen.

Health Hazard

Median lethal dose (mg-min/m3): 11000 (estimated). Median incapacitating dose: 80. Eye/skin toxicity: Temporarily severe eye irritation; mild skin irritation. Rate of action: Instantaneous. Physiological action: Powerfully lacrimatory. Detoxification rate: Rapid. (ANSER)

Fire Hazard

Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.

Contact allergens

w-Chloroacetophenone is contained in tear gases (lacrimators). This substance has important irritative potential, but can also be a sensitizer.

Safety Profile

A human poison by inhalation. An experimental poison by ingestion, inhalation, intraperitoneal, and intravenous routes. Human systemic effects by inhalation: lachrymation, conjunctiva irritation, and unspecified eye effects, cough, and dyspnea. A severe eye and moderate skin irritant. Questionable carcinogen with experimental neoplastigenic data by skin contact. A riot control agent. When heated to decomposition it emits toxic fumes of Cl-. See also KETONES.

Potential Exposure

Chloroacetophenone is used as a chemical warfare agent (Agent CN) and as a principal ingredient in the riot control agent Mace. It is also used as a pharmaceutical intermediate. The United States considers agent CN and its mixtures with various chemicals to be obsolete for military deployment.

Environmental Fate

Chemical/Physical. Releases toxic chloride fumes when heated to decomposition (Sax and Lewis, 1987).


UN1697 Chloroacetophenone, solid, (CN), Hazard Class: 6.1; Labels: 6.1-Poison Inhalation. UN3416 Chloroacetophenone, liquid, (CN), Hazard Class: 6.1;Labels: 6.1-Poisonous materials. Hazard. Military driver shall be given full and complete information regarding shipment and conditions in case of emergency. AR 50-6 deals specifically with the shipment of chemical agents. Shipments of agent will be escorted in accordance with AR 740-32.

Purification Methods

Crystallise it from MeOH [Tanner J Org Chem 52 2142 1987]. [Beilstein 7 IV 641.]


Keep away from water, steam, strong oxidizers. CN reacts with water, forming hydrochloric acid. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. CN reacts slowly with metals, causing mild corrosion and may evolve flammable hydrogen gas.

Waste Disposal

Tear gas-containing waste is dissolved in an organic solvent and sprayed into an incinerator equipped with an afterburner and alkaline scrubber utilizing reaction with sodium sulfide in an alcoholwater solution. Hydrogen sulfide is liberated and collected by an alkaline scrubber.

2-Chloroacetophenone Preparation Products And Raw materials

Raw materials

Preparation Products

2-Chloroacetophenone Suppliers

Global( 193)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Win-Win Chemical CO., Limited
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Capot Chemical Co.,Ltd.
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Chengdu Ai Keda Chemical Technology Co., Ltd. 4008-755-333 ; 028-86676798 ; 028-86757656
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View Lastest Price from 2-Chloroacetophenone manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-07-12 2-Chloroacetophenone
US $1.00 / KG 1KG 99% 100kg career henan chemical co

2-Chloroacetophenone Spectrum

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