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n-Hexane

Synonyms & Trade Names
Hexane, Hexyl hydride, normal-Hexane
CAS No.
110-54-3
RTECS No.
MN9275000
DOT ID & Guide
1208 128
Formula
CH3[CH2]4CH3
Conversion
1 ppm = 3.53 mg/m3
IDLH
1100 ppm [10%LEL]
See: 110543
Exposure Limits
NIOSH REL
: TWA 50 ppm (180 mg/m3)
OSHA PEL
: TWA 500 ppm (1800 mg/m3)
Measurement Methods

NIOSH 1500 , 3800;
OSHA 7
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with a gasoline-like odor.
MW:
86.2
BP:
156°F
FRZ:
-219°F
Sol:
0.002%
VP:
124 mmHg
IP:
10.18 eV
Sp.Gr:
0.66
Fl.P:
-7°F
UEL:
7.5%
LEL:
1.1%
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Strong oxidizers
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, nose; nausea, headache; peripheral neuropathy: numb extremities, muscle weak; dermatitis; dizziness; chemical pneumonitis (aspiration liquid)
Target Organs
Eyes, skin, respiratory system, central nervous system, peripheral nervous system
Personal Protection/Sanitation
(See protection codes)
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 immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

NIOSH

Up to 500 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

See also: INTRODUCTION   See ICSC CARD: 0279   See MEDICAL TESTS: 0114
 
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