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PYRAZOPHOS

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PYRAZOPHOS Basic information
PYRAZOPHOS Chemical Properties
  • Melting point:51℃
  • Density 1.38±0.1 g/cm3(Predicted)
  • vapor pressure 2.2 x 10-4 Pa (50 °C)
  • storage temp.  APPROX 4°C
  • pka-1.37±0.40(Predicted)
  • form neat
  • Water Solubility 4.2 mg l-1 (25 °C)
  • Merck 13,8052
  • BRN 577209
  • EPA Substance Registry SystemPyrazophos (13457-18-6)
Safety Information
  • Hazard Codes Xn,N
  • Risk Statements 20/22-50/53
  • Safety Statements 36/37-46-60-61
  • RIDADR 2783
  • WGK Germany 3
  • RTECS TF2035000
  • HazardClass 6.1(b)
  • PackingGroup III
  • ToxicityLD50 in rats, marmots, rabbits (mg/kg): 140, 184, 435 orally (Smit)
PYRAZOPHOS Usage And Synthesis
  • UsesFungicide.
  • UsesPyrazophos is a systemic fungicide that provides both protective and curative control of various fungal diseases such as powdery mildew (Podosphaera) on apples, stone fruits, bush fruits and strawberries, Erysiphe in cucurbits and tomatoes, Uncinula on vines and leaf blotch (Rhynchosporium) in cereals.
  • DefinitionChEBI: A member of the class of pyrazolopyrimidines that is the ethyl ester of 2-[(diethoxyphosphorothioyl)oxy]-5-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid. A fungicide used to control Erysiphe, Helminthosporium and ital>Rhynchospium in cereals.
  • Metabolic pathwayLimited information is available to describe the degradation and metabolic fate of pyrazophos. Hydrolytic cleavage of the P-O-pyrazolopyrimidine linkage is the primary metabolic pathway. Oxidative desulfuration of pyrazophos to pyrazophos-oxon is only a minor pathway, observed in the plant metabolism study (Scheme 1).
  • DegradationPyrazophos (1) is hydrolysed in acidic or alkaline solution (PM).
PYRAZOPHOS(13457-18-6)Related Product Information
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