NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Furfural

CAS
98-01-1

C5H4O2

RTECS
LT7000000
Synonyms & Trade Names

Fural, 2-Furancarboxaldehyde, Furfuraldehyde, 2-Furfuraldehyde
DOT ID & Guide
1199 / 132P

Exposure
Limits

NIOSH REL: See Appendix D
OSHA PEL: TWA 5 ppm (20 mg/m3) [skin]
IDLH
100 ppm See: 98011
Conversion
1 ppm = 3.93 mg/m3
Physical Description
Colorless to amber liquid with an almond-like odor. [Note: Darkens in light and air.]
MW: 96.1
BP: 323°F
FRZ: -34°F
Sol: 8%
VP: 2 mmHg
IP: 9.21 eV

Sp.Gr: 1.16
Fl.P: 140°F
UEL: 19.3%
LEL: 2.1%

Class IIIA Combustible Liquid: Fl.P. at or above 140F and below 200F.
Incompatibilities & Reactivities

Strong acids, oxidizers, strong alkalis [Note: May polymerize on contact with strong acids or strong alkalis.]
Measurement Methods
NIOSH 2529; OSHA 72
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 or contaminated
Change: No recommendation

First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Water flush promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations
OSHA
Up to 50 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 10) Any supplied-air respirator*
Up to 100 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)*
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(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, skin absorption, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, skin, upper respiratory system; headache; dermatitis
Target Organs
Eyes, skin, respiratory system
See also: INTRODUCTION   See ICSC CARD: 0276   See MEDICAL TESTS: 0252