ENDIS-RISKS
Endocrine Disruption in the Scheldt estuary:
distribution, exposure and effects
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ED North Database
Chlorpyrifos
Physicochemical properties
Chemical name NLChlorpyrifos
Chemical name ENChlorpyrifos
CAS no2921-88-2
UN-
Chemical formulaC9H11Cl3NO3PS
Molecular weight350,59
Boiling point-
Melting point41,5-43,5°C
Density1,4 at 43,5°C
Vapour pressure1,87E-5 mm Hg at 20°C
Solubility0,4 mg/l at 23°C
LogKow5,11
PhaseSolid
Notes
Persistenceno
Degradation
Accumulation
Endocrien effect studies
Organism group Effect 
mammaliansuspected no endocrine effect
No inhibition of aromatase activity		 Show study
mammalianEffect on thyroid hormone
Decreased serum T4 levels		 Show study
mammalianEffect on corticosteroid
Increased serum cortisol levels		 Show study
mammaliansuspected no endocrine effect
No induction of cell proliferation		 Show study
yeastEffect on estrogen
Very weak induction of ER-mediated transcription		 Show study
Data compiled by the Research Group Environmental Toxicology, Laboratory of Environmental Toxicology and Aquatic Ecology, Ghent University, Belgium.
For queries about the data, please contact Colin Janssen or Tim Verslycke .
More info about the contents and the structure of the database can be found on the about screen.