# NIOSH Pocket Guide to Chemical Hazards
Diisopropylamine | CAS 108-18-9
[(CH3)2CH]2NH | RTECS IM4025000
Synonyms & Trade Names DIPA, N-(1-Methylethyl)-2-propanamine | DOT ID & Guide 1158 132
Exposure Limits | NIOSH REL: TWA 5 ppm (20 mg/m3) [skin]
OSHA PEL: TWA 5 ppm (20 mg/m3) [skin]
IDLH 200 ppm See: 108189 | Conversion 1 ppm = 4.14 mg/m3
Physical Description Colorless liquid with an ammonia- or fish-like odor.
MW: 101.2 | BP: 183°F | FRZ: -141°F | Sol: Miscible
VP: 70 mmHg | IP: 7.73 eV |  | Sp.Gr: 0.72
Fl.P: 20°F | UEL: 7.1% | LEL: 1.1% |
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities Strong oxidizers, strong acids
Measurement Methods NIOSH S141 (II-4)
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact (>5%) Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Eyewash (>5%) | First Aid (See procedures) Eye: Irrigate immediately Skin: Water wash immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 125 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)£ Up to 200 ppm: (APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)£/(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 organic vapor canister/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; nausea, vomiting; headache; visual disturbance
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION