Synonyms: Dibenzoyl peroxide
OSHA IMIS Code Number: 0335
Chemical Abstracts Service (CAS) Registry Number: 94-36-0
NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: DM8575000; 19455
Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN2085 Organic Peroxide
Chemical Description and Physical Properties:
Colorless, odorless solid.
molecular weight: 242
vapor pressure: <1 mm
boiling point: N.A.
melting point: 217°F
Incompatibilities: Combustible substances, wood, paper, lithium aluminum hydride; explosive at high temperatures
OSHA Permissable Exposure Limit (PEL):
General Industry: 5.0 mg/m3
Construction Industry: 5.0 mg/m3 TWA
American Conference of Governmental Industrial Hygenists (ACGIH) Threshold Limit Value (TLV): 5 mg/m3 TWA; Appendix A4 (Not Classifiable as a Human Carcinogen)
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 5 mg/m3 TWA
International Agency for Research on Cancer (IARC): Group 3, not classifiable as to its carcinogenicity to humans
Potential Symptoms: Skin, eye, mucous membrane irritation; sensitization; dermatitis
Health Effects: Irritation-Eye, Nose, Throat, Skin---Moderate (HE15)
Affected Organs: Skin, respiratory system, eyes
Primary Laboratory Sampling/Analytical Method (SLC1):
sampling media: FH Filter (37 mm) See Note
analytical solvent: Methanol
maximum volume: 400 Liters
maximum flow rate: 3.0 L/min
current analytical method: High Performance Liquid Chromatography; HPLC/UL48.
method reference: 1 (OSHA modified NIOSH 5009 [17 KB PDF, 3 pages])
sampling and analytical error: 0.10
method classification: Fully Validated
note: Immediately after sampling, transfer filter to 20 mL scintillation vial before shipping. Ship refrigerated.
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mobile phase: 80:20 Methanol: Water
detector wavelength: 254nm
detection limit: 0.04 mg/m3
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