NIOSH Pocket Guide to Chemical Hazards

Dibutyl phthalate CAS 84-74-2
C6H4(COOC4H9)2 RTECS TI0875000
Synonyms & Trade Names
DBP; Dibutyl 1,2-benzene-dicarboxylate; Di-n-butyl phthalate
DOT ID & Guide
Exposure
Limits
NIOSH REL: TWA 5 mg/m3
OSHA PEL: TWA 5 mg/m3
IDLH 4000 mg/m3 Conversion 1 ppm = 11.57 mg/m3
Physical Description
Colorless to faint-yellow, oily liquid with a slight, aromatic odor.
MW: 278.3
BP: 644°F
FRZ: -31°F
Sol(77°F): 0.001%
VP: 0.00007 mmHg
IP: ?

Sp.Gr: 1.05
Fl.P: 315°F
UEL: ?
LEL(456°F): 0.5%

Class IIIB Combustible Liquid: Fl.P. at or above 200F.
Incompatibilities & Reactivities
Nitrates; strong oxidizers, alkalis & acids; liquid chlorine
Measurement Methods
NIOSH 5020; OSHA 104
Personal Protection & Sanitation
Skin: No recommendation
Eyes: Prevent eye contact
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation

First Aid (See procedures)
Eye: Irrigate immediately
Skin: Wash regularly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA
Up to 50 mg/m3: (APF = 10) Any dust and mist respirator with a full facepiece
Up to 125 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode/(APF = 25) Any powered, air-purifying respirator with a dust and mist filter
Up to 250 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece
Up to 4000 mg/m3: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
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 with a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, upper respiratory system, stomach
Target Organs Eyes, respiratory system, gastrointestinal tract
See also: INTRODUCTION