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Chemical Sampling Information (CSI)
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General Description

Synonyms: 6,7-Dihydrodipyrido[1,2-a:2',1'-c]pyrazinediium dibromide; Reglone; 1,1'-Ethylene-2,2'-dipyridylium dibromide; Aquacide; Diquat dibromide

OSHA IMIS Code Number: 2681

Chemical Abstracts Service (CAS) Registry Number: 85-00-7

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: JM5690000; 32281

Chemical Description and Physical Properties:

contact herbicide
molecular weight: 344
melting point: 335°C

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.5 mg/m3 TWA (Skin) (Inhalable fraction) Appendix A4 (Not Classifiable as a Human Carcinogen) -- 0.1 mg/m3 TWA (Skin) (Respirable Fraction) Appendix A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.5 mg/m3 TWA

Health Factors

Health Effects: Cumulative effects (Cataracts) (HE3); Mutagen (HE2); Suspect Teratogen (HE5); LD50 (oral, rat) 231 mg/kg

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Glass Fiber Filter (37 mm)
    analytical solvent: 0.1 N HCl
    maximum volume: 120 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UV
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated

Conditions: Column: C18; Mobile Phase: 40:60 Acetonitrile:Water 0.01M Heptanesulfonic Acid; Detector Wavelength: 311nm; Detection Limit: 6 ng/inj

Bulk Method:

  • Limit the amount of bulk submitted to one gram or approx. one mL.

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