Basic information Description Chemical Properties Uses References Safety Related Supplier
Chlorpyrifos Structure

Chlorpyrifos

Chemical Properties

Melting point 42-44°C
Boiling point 200°C
Density  1.398
vapor pressure  5.03 x 10-5 mmHg at 25 °C (subcooled liquid vapor pressure calculated from GC retention time data,Hinckley et al., 1990)
Flash point 2 °C
storage temp.  APPROX 4°C
solubility  (At 25 °): 6.5, 7.9, 6.3, and 0.45 kg/kg in acetone, benzene, chloroform, and methanol, respectively (Worthing and Hance, 1991)
pka -5.28±0.10(Predicted)
form  solid
Water Solubility  Insoluble. 0.00013 g/100 mL
Merck  13,2208
BRN  1545756
Henry's Law Constant 8.19 at 5 °C, 20.7 at 15 °C, 22.7 at 20 °C, 35.5 at 25 °C, 146 at 35 °C:in 3% NaCl solution: 32.3 at 5 °C, 82.9 at 15 °C, 301 at 25 °C, 535 at 35 °C (gas stripping-GC, Cetin et al., 2006)
Exposure limits OSHA PEL: TWA 0.2 mg/m3, STEL 0.6 mg/m3; ACGIH TLV: TWA 0.2 mg/m3, STEL 0.6 mg/m3
Stability Stable. Incompatible with strong oxidizing agents.
InChIKey SBPBAQFWLVIOKP-UHFFFAOYSA-N
LogP 5.21 at 20℃
CAS DataBase Reference 2921-88-2(CAS DataBase Reference)
NIST Chemistry Reference o,o-Diethyl-o-(3,5,6-trichloro-2-pyridyl)phosphorothioate(2921-88-2)
EPA Substance Registry System Chlorpyrifos (2921-88-2)

Safety Information

Hazard Codes  T;N,N,T,Xn,F,Xi
Risk Statements  25-50/53-36-20/21/22-11-38
Safety Statements  1/2-45-60-61-36/37-26-16
RIDADR  UN 2783
WGK Germany  3
RTECS  TF6300000
HazardClass  6.1(b)
PackingGroup  III
HS Code  29333990
Hazardous Substances Data 2921-88-2(Hazardous Substances Data)
Toxicity LD50 orally in rats: 145 mg/kg (Schafer)

Usage And Synthesis