NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Quinone

CAS
106-51-4

OC6H4O

RTECS
DK2625000
Synonyms & Trade Names

1,4-Benzoquinone; p-Benzoquinone; 1,4-Cyclohexadiene dioxide; p-Quinone
DOT ID & Guide
2587 / 153

Exposure
Limits

NIOSH REL: TWA 0.4 mg/m3 (0.1 ppm)
OSHA PEL: TWA 0.4 mg/m3 (0.1 ppm)
IDLH
100 mg/m3 See: 106514
Conversion
1 ppm = 4.42 mg/m3
Physical Description
Pale-yellow solid with an acrid, chlorine-like odor.
MW: 108.1
BP: Sublimes
MLT: 240°F
Sol: Slight
VP(77°F): 0.1 mmHg
IP: 9.68 eV

Sp.Gr: 1.32
Fl.P: 100-200°F
UEL: ?
LEL: ?

Combustible Solid
Incompatibilities & Reactivities

Strong oxidizers
Measurement Methods
NIOSH S181 (II-4)
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: Daily
Provide: Eyewash, Quick drench
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations
NIOSH/OSHA
Up to 10 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 20 mg/m3:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 100 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 (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
Eye irritation, conjunctivitis; keratitis (inflammation of the cornea); skin irritation
Target Organs
Eyes, skin
See also: INTRODUCTION   See ICSC CARD: 0779   See MEDICAL TESTS: 0201