NIOSH Pocket Guide to Chemical Hazards


CAS 121-44-8


RTECS YE0175000
Synonyms & Trade Names
DOT ID & Guide
1296 132


NIOSH REL: See Appendix D
OSHA PEL: TWA 25 ppm (100 mg/m3)
IDLH 200 ppm See: 121448 Conversion 1 ppm = 4.14 mg/m3
Physical Description
Colorless liquid with a strong, ammonia-like odor.
MW: 101.2
BP: 193°F
FRZ: -175°F
Sol: 2%
VP: 54 mmHg
IP: 7.50 eV

Sp.Gr: 0.73
Fl.P: 20°F
UEL: 8.0%
LEL: 1.2%

Class IB Flammable Liquid: Fl.P. below 73F and BP at or above 100F.
Incompatibilities & Reactivities
Strong oxidizers, strong acids, chlorine, hypochlorite, halogenated compounds
Measurement Methods
NIOSH S152 (II-3); OSHA PV2060
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 (flammable)
Change: No recommendation
Provide: Eyewash (>1%), Quick drench (>1%)
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Important additional information about respirator selection
Respirator Recommendations OSHA
Up to 200 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
(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
(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/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; in animals: myocardial, kidney, liver damage
Target Organs Eyes, skin, respiratory system, cardiovascular system, liver, kidneys
See also: INTRODUCTION   See ICSC CARD: 0203