NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Petroleum distillates (naphtha)

CAS
8002-05-9


RTECS
SE7449000
Synonyms & Trade Names

Aliphatic petroleum naphtha, Petroleum naphtha, Rubber solvent
DOT ID & Guide

Exposure
Limits

NIOSH REL: TWA 350 mg/m3 C 1800 mg/m3 [15-minute]
OSHA PEL: TWA 500 ppm (2000 mg/m3)
IDLH
1100 ppm [10%LEL] See: 8002059
Conversion
1 ppm = 4.05 mg/m3
Physical Description
Colorless liquid with a gasoline- or kerosene-like odor. [Note: A mixture of paraffins (C5 to C13) that may contain a small amount of aromatic hydrocarbons.]
MW: 99 (approx)
BP: 86-460°F
FRZ: -99°F
Sol: Insoluble
VP: 40 mmHg (approx)
IP: ?

Sp.Gr: 0.63-0.66
Fl.P: -40 to -86°F
UEL: 5.9%
LEL: 1.1%

Flammable Liquid
Incompatibilities & Reactivities

Strong oxidizers
Measurement Methods
NIOSH 1550
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

First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations
NIOSH
Up to 850 ppm:
(APF = 10) Any supplied-air respirator
Up to 1100 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
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
Important additional information about respirator selection
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, nose, throat; dizziness, drowsiness, headache, nausea; dry cracked skin; chemical pneumonitis (aspiration liquid)
Target Organs
Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION