ENDIS-RISKS
Endocrine Disruption in the Scheldt estuary:
distribution, exposure and effects
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ED North Database
Atrazine
Physicochemical properties
Chemical name NLAtrazine
Chemical name ENAtrazine
CAS no1912-24-9
UN-
Chemical formulaC8H14ClN5
Molecular weight215,7
Boiling point-
Melting point173-175°C
Density1,187 at 20°C
Vapour pressure3E-7 mm Hg at 20°C
Solubility70 mg/l at 25°C
LogKow2,64
PhaseSolid
Notes
Persistenceyes
Degradation
Accumulationno
Endocrien effect studies
Organism group Effect 
mammaliansuspected endocrine effect
Increased pituitary wet weight (hyperaemia and hypertrophy)
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mammaliansuspected endocrine effect
Reduced activity of steroid metabolizing enzymes
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mammaliansuspected endocrine effect
Male pups: decreased number of androgen-specific binding sites in prostate
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mammaliansuspected no endocrine effect
Male pups: no effects pituitary metabolism
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mammaliansuspected endocrine effect
Female pups: increased 5-alpha-steroid reductase activity
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mammaliansuspected no endocrine effect
Female pups: no effects on pituitary androgen metabolism
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mammaliansuspected endocrine effect
Male pups: decreased 3-alpha-hydroxysteroid dehydrogenase and 5-alpha-steroid reductase
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mammaliansuspected endocrine effect
Hyperplasia of mammary gland and prostate
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mammaliansuspected endocrine effect
Mammary fibroadenomas and adenocarcinomas
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mammalianEffect on estrogen
75 mg/kg: disrupted 4-day ovarian cycle
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mammalianEffect on estrogen
150 mg/kg: repetitive pseudopregnancies
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mammaliansuspected no endocrine effect
300 mg/kg: regression of ovaries and anestrous condition
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mammalianEffect on estrogen
75 mg/kg: disrupted 4-day ovarian cycle
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mammalianEffect on estrogen
150 mg/kg: repetitive pseudopregnancies
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mammalianEffect on estrogen
300 mg/kg: repetitive pseudopregnancies
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mammaliansuspected endocrine effect
Prolongation of estrous cycle: increase of days in estrus, decrease of days in diestrus
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mammaliansuspected endocrine effect
Cornification of vaginal epithelium
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mammalianEffect on anti-estrogen
Decrease in circulating estradiol levels
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mammaliansuspected endocrine effect
Decrease of days in estrus, increase of days in diestrus
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mammalianEffect on anti-estrogen
Decrease in circulating estradiol levels
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mammaliansuspected no endocrine effect
No effect on [3H] 5-alpha-DHT binding to SHBG
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mammaliansuspected no endocrine effect
No significant inhibition of estradiol binding to ER
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mammalianEffect on androgen
40-50% decrease in [3H]5-alpha-DHT binding to ABP
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mammalianEffect on androgen
30-40% inhibition in [3H]5-alpha-DHT binding to AR
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mammaliansuspected no endocrine effect
No induction of ER-mediated responses
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mammaliansuspected no endocrine effect
No induction of ER-mediated responses
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mammaliansuspected endocrine effect
Increased incidence in breastcancer
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mammalianEffect on catecholamine
Dose-dependent inhibition of TH-mediated dopamine synthesis
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mammalianEffect on catecholamine
100-200 µM: dose-dependent inhibition of DbH-mediated norepinephrine synthesis
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mammaliansuspected no endocrine effect
200 µM: reduced cell viability at 24 hours of exposure
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reptilesuspected no endocrine effect
No sex reversal
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reptilesuspected no endocrine effect
No effects on hatchling plasma hormone concentrations or gonadal aromatase activity
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reptilesuspected no endocrine effect
No effects on CAF hormone concentrations
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reptileEffect on anti-estrogen
Inhibition of [3H]17-beta-estradiol binding to ER
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reptileEffect on anti-estrogen
35% inhibition of R5020 binding to PR
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yeastsuspected no endocrine effect
No significant induction of hER-mediated transactivation
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yeastsuspected no endocrine effect
No hER binding
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yeastsuspected no endocrine effect
No estrogenic activity
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yeastsuspected no endocrine effect
No ER-mediated growth
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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.