NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Benzyl chloride

CAS
100-44-7

C6H5CH2Cl

RTECS
XS8925000
Synonyms & Trade Names

Chloromethylbenzene, alpha-Chlorotoluene
DOT ID & Guide
1738 / 156

Exposure
Limits

NIOSH REL: C 1 ppm (5 mg/m3) [15-minute]
OSHA PEL: TWA 1 ppm (5 mg/m3)
IDLH
10 ppm See: 100447
Conversion
1 ppm = 5.18 mg/m3
Physical Description
Colorless to slightly yellow liquid with a pungent, aromatic odor.
MW: 126.6
BP: 354°F
FRZ: -38°F
Sol: 0.05%
VP: 1 mmHg
IP: ?

Sp.Gr: 1.10
Fl.P: 153°F
UEL: ?
LEL: 1.1%

Class IIIA Combustible Liquid: Fl.P. at or above 140F and below 200F.
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.]
Measurement Methods
NIOSH 1003; OSHA 7
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
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
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
See also: INTRODUCTION   See ICSC CARD: 0016   See MEDICAL TESTS: 0024