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Chemical Sampling Information (CSI)
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General Description

Synonyms: p-Benzoquinone; para-Quinone

OSHA IMIS Code Number: 2222

Chemical Abstracts Service (CAS) Registry Number: 106-51-4

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: DK2625000; 18554

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 2587

NIOSH Pocket Guide to Chemical Hazards, Quinone: chemical description, physical properties, potentially hazardous incompatibilities, and more

pale yellow solid with an acrid odor
molecular weight: 108
vapor pressure: 0.1 mm
boiling point: Sublimes
melting point: 235°F

Incompatibilities: Strong oxidizers

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 0.1 ppm, 0.4 mg/m3

Construction Industry: 0.1 ppm, 0.4 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 ppm, 0.44 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.1 ppm TWA

Health Factors

Carcinogenic Classification:

International Agency for Research on Cancer (IARC): Group 3, not classifiable as to its carcinogenicity to humans (para-Quinone)

Potential Symptoms: Eye irritation, conjunctivitis; keratitis; skin irritation

Health Effects: Acute eye (Corneal) damage (HE4) Cumulative eye (Corneal) damage (HE3) Irritation-Nose, Throat, Skin---Mild (HE16)

Affected Organs: Eyes, skin

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: XAD-2 Tube (100/50 mg sections, 20/50 mesh)
    analytical solvent: Isopropanol/Hexane (20/80)
    maximum volume: 24 Liters
    maximum flow rate: 0.2 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UL68
    method reference: 1 (Modified NIOSH S181)
    sampling and analytical error: 0.14
    method classification: Fully Validated
    note: The samples must be analyzed within 1 hour after desorption. The modification is to use IPA/Hexane instead of the EtOH/Hexane as specified in the NIOSH method since EtOH and Hexane are not miscible.

Conditions: 240 nm

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