PYRAZOPHOS
- CAS NO.:13457-18-6
- Empirical Formula: C14H20N3O5PS
- Molecular Weight: 373.36
- MDL number: MFCD00055494
- EINECS: 236-656-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-04-23 13:52:06
![PYRAZOPHOS Structural](https://img.chemicalbook.in/CAS/GIF/13457-18-6.gif)
What is PYRAZOPHOS?
The Uses of PYRAZOPHOS
Pyrazophos 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.
The Uses of PYRAZOPHOS
Fungicide.
The Uses of PYRAZOPHOS
Pyrazophos is an anticholinesterase pesticide used on fruits and vegetables and can be determined by gas chromatography/mass spectrometry and liquid chromatography with fluorescence detection.
definition
ChEBI: 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 pathway
Limited 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).
Metabolism
Its mode of action is believed to be the inhibition of melanin biosynthesis and the development of appressoria by fungal conidia. Formulation is available as emulsifiable concentrate (EC: 30%). Application rates on Oidium spp. are in the range of 15–30 g a.i./hl.
Degradation
Pyrazophos (1) is hydrolysed in acidic or alkaline solution (PM).
Properties of PYRAZOPHOS
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 System | Pyrazophos (13457-18-6) |
Safety information for PYRAZOPHOS
Signal word | Danger |
Pictogram(s) |
![]() Skull and Crossbones Acute Toxicity GHS06 ![]() Environment GHS09 |
GHS Hazard Statements |
H301:Acute toxicity,oral H332:Acute toxicity,inhalation H410:Hazardous to the aquatic environment, long-term hazard |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P273:Avoid release to the environment. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
Computed Descriptors for PYRAZOPHOS
New Products
3-Pyridineacrylic acid 3-Bromo-4-fluorophenol N-Boc-Ethylenediamine cis-[2-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methyl-4-methylbenzenesulphonate 4-Aminotetrahydropyran hydrochloride 4,5-Dibromopyridazin-3-one N-Benzyl-3-hydroxypiperidine 2-Methyl-4-nitrobenzoic acid 2-(4-bromophenyl)-2-methylpropanoic acid 4-Acetyl-2-methylbenzoicacid Acetyl-meldrum's acid Ethyl-4-Pyrazole carboxylate 2,6-Pyridinedimethanol 5,7-Dichloro-3H-Imidazo[4,5-B]Pyridine 5-Bromo-2-Methoxy-4-Methyl-3-Nitropyridine 2-Fluoro-5-Iodopyridine 2-Fluoro-5-Methylpyridine 2-Chloro-3-Bromo-5-Amiopyridine METHYL-4-(BUTYRYLAMINO)3-METHYL-5-NITROBENZOATE TRANS-CYCLOBUTANE-1,2- DICARBOXYLIC ACID 5-Nitro indazole R-(-)-5-(2-AMINO-PROPYL)-2-METHOXY-BENZENESULFONAMIDE 1,3-cyclohexanedione 4-AminophenaethylalcholRelated products of tetrahydrofuran
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![](https://img.chemicalbook.in/CAS/GIF/274-71-5.gif)
![](https://img.chemicalbook.in/CAS/GIF/13457-18-6.gif)
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