Hazard search

Chlorpyrifos

CAS number
2921-88-2
Also known as
Chloropyrifos (ISO) · Chlorpyrifos (Dursban) · Chlorpyrifos (Organophosphorus Pesticides) · Chlorpyriphos · Dursban · Dursban (chlorpyrifos)(organophosphorus pesticides) · O,O-Diethyl O-(3,5,6-trichloro-2-pyridyl) phosphorothioate

UK workplace exposure limits

LimitValueApplies to
8-hour TWA 0.2 mg/m³
15-minute STEL 0.6 mg/m³

Notations

  • Sk: can be absorbed through the skin

Sampling methods

MethodSamplingMedium AnalysisPart numbers
MDHS 94/2
Pesticides in air by GC -MS
Method document (opens in a new tab)
Active (pump) IOM and Tenax Tube (30/15 mg) HPLC-UV 225-70A
225-58F
226-35
NIOSH 5600
Organophosphorus pesticides by GC-FPD
Method document (opens in a new tab)
Active (pump) OVS-2 tube with quartz filter GC-FPD 226-58
224-29V
OSHA 62
Chlorpyrifos, Dichlorvos, Diazinon, Malathion & Parathion by GC-FPD
Method document (opens in a new tab)
Active (pump) OVS-2 tube with GF filter GC-FPD 226-30-16
224-29V
ASTM D4861-23
Pesticides and Polychlorinated Biphenyls in Air
Method document (opens in a new tab)
Active (pump) Low Volume PUF Tube 226-92

Methods and limits as published by their agencies and summarised by SKC; check the current method and the limit that applies to you before sampling.

Source: SKC Ltd (UK), Hazard Search, used with SKC's permission (opens in a new tab); SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)