Benzyl chloride

Synonyms & Trade Names

Chloromethylbenzene, α-Chlorotoluene

CAS No.

100-44-7

RTECS No.

XS8925000

DOT ID & Guide

1738 156

Formula

C₆H₅CH₂Cl

Conversion

1 ppm = 5.18 mg/m³

IDLH

10 ppm
See: 100447

Exposure Limits

NIOSH REL

C 1 ppm (5 mg/m³) [15-minute]

OSHA PEL

TWA 1 ppm (5 mg/m³)

Measurement Methods

NIOSH 1003;
OSHA 7
See: NMAM or OSHA Methods

Physical Description

Colorless to slightly yellow liquid with a pungent, aromatic odor.

Molecular Weight

126.6

Boiling Point

354°F

Freezing Point

-38°F

Solubility

0.05%

Vapor Pressure

1 mmHg

Ionization Potential

Specific Gravity

1.10

Flash Point

153°F

Upper Explosive Limit

Lower Explosive Limit

1.1%

Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.

Incompatibilities & Reactivities

Oxidizers, acids, copper, aluminum, magnesium, iron, zinc, tin [Note: Can polymerize when in contact with all common metals except nickel & lead. Hydrolyzes in H₂O to benzyl alcohol.]

Exposure Routes

inhalation, ingestion, skin and/or eye contact

Symptoms

irritation eyes, skin, nose; lassitude (weakness, exhaustion); irritability; headache; skin eruption; pulmonary edema

Target Organs

Eyes, skin, respiratory system, central nervous 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:No recommendation
Provide:Eyewash, Quick drench

First Aid

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

Respirator Recommendations

NIOSH/OSHA

Up to 10 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor and acid gas cartridge(s)*
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor and acid gas canister
(APF = 25) Any powered, air-purifying respirator with organic vapor and acid gas cartridge(s)*
(APF = 10) Any supplied-air respirator*
(APF = 50) Any self-contained breathing apparatus 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 organic vapor and acid gas canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

Benzyl chloride

NIOSH REL

OSHA PEL

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