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17109-49-8

17109-49-8 structural image
Product Name: Edifenphos
Formula: C14H15O2PS2
Synonyms: O-Ethyl S,S-diphenyl phosphorodithioate
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Clear yellow to light brown liquid; [Merck Index]
Color/Form Yellow to light brown liquid... .
Odor Characteristic odor
Boiling Point 154 °C/1 Pa
Melting Point -25 °C
Solubility In n-hexane 20-50, dichloromethane, isopropanol, toluene 200 (all in g/l, 20 °C). Readily soluble in methanol, acetone, benzene, xylene, carbon tetrachloride and dioxane. Sparingly soluble in heptane.
Density 1.251 g/cu cm (20 °C)
Vapor Pressure 0.00000027 [mmHg]
LogP log Kow = 3.48
Stability/Shelf Life Stable in neutral media. Hydrolysed by strong acids and alkalis; at 25 °C, DT50 19 days (pH 7), 2 days (pH 9). Degradable in the presence of light.
Decomposition At 25 °C decomposition occurs in 49 hr at pH 9 and in 1,135 hr at pH 7.
Kovats Retention Index 2295.7 2277.8 2329.6 2359
Chemical Classes Pesticides -> Fungicides

SAFETY INFORMATION

Signal word Danger
Pictogram(s)

Skull and Crossbones
Acute Toxicity
GHS06

Environment
GHS09
GHS Hazard Statements H317:Sensitisation, Skin
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

COMPUTED DESCRIPTORS

Molecular Weight 310.4 g/mol
XLogP3 3.8
Hydrogen Bond Donor Count 0
Hydrogen Bond Acceptor Count 4
Rotatable Bond Count 6
Exact Mass 310.02510906 g/mol
Monoisotopic Mass 310.02510906 g/mol
Topological Polar Surface Area 76.9 Ų
Heavy Atom Count 19
Formal Charge 0
Complexity 276
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 1
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

Edifenphos is an organic thiophosphate that is the O-ethyl-S,S-diphenyl ester of phosphorodithioic acid. Used to control a variety of fungal diseases on rice including blast, ear blight and stem rot. Edifenphos is moderately toxic to mammals and fish but poses more of a risk to aquatic invertebrates. It has a role as a neurotoxin, an EC 3.1.1.7 (acetylcholinesterase) inhibitor, a phospholipid biosynthesis inhibitor and an antifungal agrochemical.