n-Propyl nitrate

Synonyms & Trade Names

Propyl ester of nitric acid

CAS No.

627-13-4

RTECS No.

UK0350000

DOT ID & Guide

1865 131

Formula

CH₃CH₂CH₂ONO₂

Conversion

1 ppm = 4.30 mg/m³

IDLH

500 ppm
See: 627134

Exposure Limits

NIOSH REL

TWA 25 ppm (105 mg/m³) ST 40 ppm (170 mg/m³)

OSHA PEL

TWA 25 ppm (110 mg/m³) See Appendix G

Measurement Methods

NIOSH S227 (II-3);
OSHA 7
See: NMAM or OSHA Methods

Physical Description

Colorless to straw-colored liquid with an ether-like odor.

Molecular Weight

105.1

Boiling Point

231°F

Freezing Point

-148°F

Solubility

Slight

Vapor Pressure

18 mmHg

Ionization Potential

11.07 eV

Specific Gravity

1.07

Flash Point

68°F

Upper Explosive Limit

100%

Lower Explosive Limit

Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.

Incompatibilities & Reactivities

Strong oxidizers, combustible materials [Note: Forms explosive mixtures with combustible materials.]

Exposure Routes

inhalation, ingestion, skin and/or eye contact

Symptoms

In Animals: irritation eyes, skin; methemoglobinemia, anoxia, cyanosis; dyspnea (breathing difficulty), lassitude (weakness, exhaustion), dizziness, headache

Target Organs

Eyes, skin, blood

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 promptly
Breathing:Respiratory support
Swallow:Medical attention immediately

Respirator Recommendations

NIOSH/OSHA

Up to 250 ppm:
(APF = 10) Any supplied-air respirator

Up to 500 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 canister providing protection against the compound of concern^¿
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

n-Propyl nitrate

NIOSH REL

OSHA PEL

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