17109-49-8
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.