alpha-Chloroacetophenone

Synonyms & Trade Names

2-Chloroacetophenone, Chloromethyl phenyl ketone, Mace®, Phenacyl chloride, Phenyl chloromethyl ketone, Tear gas

CAS No.

532-27-4

RTECS No.

AM6300000

DOT ID & Guide

1697 153

Formula

C₆H₅COCH₂Cl

Conversion

1 ppm = 6.32 mg/m³

IDLH

15 mg/m³
See: 532274

Exposure Limits

NIOSH REL

TWA 0.3 mg/m³ (0.05 ppm)

OSHA PEL

TWA 0.3 mg/m³ (0.05 ppm)

Measurement Methods

NIOSH P&CAM291 (II-5)
See: NMAM or OSHA Methods

Physical Description

Colorless to gray crystalline solid with a sharp, irritating odor.

Molecular Weight

154.6

Boiling Point

472°F

Melting Point

134°F

Solubility

Insoluble

Vapor Pressure

0.005 mmHg

Ionization Potential

9.44 eV

Specific Gravity

1.32

Flash Point

244°F

Upper Explosive Limit

Lower Explosive Limit

Combustible Solid

Incompatibilities & Reactivities

Water, steam, strong oxidizers [Note: Slowly corrodes metals.]

Exposure Routes

inhalation, ingestion, skin and/or eye contact

Symptoms

irritation eyes, skin, respiratory system; pulmonary edema

Target Organs

Eyes, skin, respiratory system

Personal Protection/Sanitation

(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash

First Aid

(See procedures)
Eye:Irrigate immediately
Skin:Soap wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately

Respirator Recommendations

NIOSH/OSHA

Up to 3 mg/m³:
(APF = 10) Any air-purifying half-mask respirator with organic vapor cartridge(s) in combination with an N95, R95, or P95 filter. The following filters may also be used: N99, R99, P99, N100, R100, P100.
Click here for information on selection of N, R, or P filters.
(APF = 10) Any supplied-air respirator

Up to 7.5 mg/m³:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode^£
(APF = 25) Any powered, air-purifying respirator with an organic vapor cartridge in combination with a high-efficiency particulate filter.^£

Up to 15 mg/m³:
(APF = 50) Any air-purifying full-facepiece respirator equipped with organic vapor cartridge(s) in combination with an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern and having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern and having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

alpha-Chloroacetophenone

NIOSH REL

OSHA PEL

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