NAME: Diquat

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

IMIS: 2681

CAS: 85-00-7

NIOSH: RTECS JM5690000; 32281

DESCRIPTION:

Contact herbicide.
MW: 344
MP: 335 C

ACGIH 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)

NIOSH REL: 0.5 mg/m3 TWA

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

PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):

MEDIA: Glass Fiber Filter (37 mm)
ANL SOLVENT: 0.1 N HCl
MAX V: 120 Liters   MAX F: 1.0 L/min
ANL 1: High Performance Liquid Chromatography; HPLC/UV
REF: 2 (OSHA In-house File)
CLASS: Partially Validated

COND: 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