# NIOSH Pocket Guide to Chemical Hazards
Dipropylene glycol methyl ether | CAS 34590-94-8
CH3OC3H6OC3H6OH | RTECS JM1575000
Synonyms & Trade Names Dipropylene glycol monomethyl ether, Dowanol® 50B | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 100 ppm (600 mg/m3) ST 150 ppm (900 mg/m3) [skin]
OSHA PEL†: TWA 100 ppm (600 mg/m3) [skin]
IDLH 600 ppm | Conversion 1 ppm = 6.06 mg/m3
Physical Description Colorless liquid with a mild, ether-like odor.
MW: 148.2 | BP: 408°F | FRZ: -112°F | Sol: Miscible
VP: 0.5 mmHg | IP: ? |  | Sp.Gr: 0.95
Fl.P: 180°F | UEL: 3.0% | LEL(392°F): 1.1% |
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities Strong oxidizers
Measurement Methods NIOSH S69 (II-2)
Personal Protection & Sanitation Skin: No recommendation Eyes: No recommendation Wash skin: No recommendation Remove: No recommendation Change: No recommendation | First Aid (See procedures) Eye: Irrigate immediately Skin: Water wash promptly Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 600 ppm: (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 canister having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, nose, throat; lassitude (weakness, exhaustion), dizziness, headache
Target Organs Eyes, respiratory system, central nervous system
See also: INTRODUCTION