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Chemical Sampling Information (CSI)
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General Description

Synonyms: 1,3-Benzenedicarbonitrile; m-Dicyanobenzene; 1,3-Dicyanobenzene; Isophthalodinitrile; m-PDN

OSHA IMIS Code Number: 2015

Chemical Abstracts Service (CAS) Registry Number: 626-17-5

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: CZ1900000; 13768

NIOSH Pocket Guide to Chemical Hazards, m-Phthalodinitrile: Chemical description, physical properties, potentially hazardous incompatibilities, and more

Chemical Description and Physical Properties:
molecular weight: 128.14
molecular formula: C8H4N2
Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 5 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 5 mg/m3 TWA


Health Factors

Health Effects: Particulate (Apparent low toxicity) (HE19)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: Charcoal Tube (100/50 mg sections, 20/40 mesh)
    analytical solvent: Acetone
    maximum volume: 20 Liters   
    maximum flow rate:
    0.2 L/min
    current analytical method: Gas Chromatography; GC/NPD
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated
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Page last updated: 08/24/1992