# NIOSH Pocket Guide to Chemical Hazards
Dipropyl ketone | CAS 123-19-3
(CH3CH2CH2)2CO | RTECS MJ5600000
Synonyms & Trade Names Butyrone, DPK, 4-Heptanone, Heptan-4-one, Propyl ketone | DOT ID & Guide 2710 127
Exposure Limits | NIOSH REL: TWA 50 ppm (235 mg/m3)
OSHA PEL†: none
IDLH N.D. | Conversion 1 ppm = 4.67 mg/m3
Physical Description Colorless liquid with a pleasant odor.
MW: 114.2 | BP: 291°F | FRZ: -27°F | Sol: Insoluble
VP: 5 mmHg | IP: 9.10 eV |  | Sp.Gr: 0.82
Fl.P: 120°F | UEL: ? | LEL: ? |
Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.
Incompatibilities & Reactivities Oxidizers
Measurement Methods OSHA 7
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: Daily Remove: When wet or contaminated Change: No recommendation | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, ingestion,skin and/or eye contact
Symptoms Irritation eyes, skin; central nervous system depression, dizziness, drowsiness, decreased breathing; in animals: liver injury; narcosis
Target Organs Eyes, skin, central nervous system, liver
See also: INTRODUCTION