Edifenphos
- Product Name
- Edifenphos
- CAS No.
- 17109-49-8
- Chemical Name
- Edifenphos
- Synonyms
- EDDP;Lutrol;EDIFEN;EDISAN;VIHINO;sra7847;HINOSAN;Blastoff;bay78418;SRA 7847
- CBNumber
- CB5702406
- Molecular Formula
- C14H15O2PS2
- Formula Weight
- 310.37
- MOL File
- 17109-49-8.mol
Edifenphos Property
- Melting point:
- 25°C
- Boiling point:
- bp0.01 154°
- Density
- d420 1.23
- vapor pressure
- 1.3 x 10-2Pa (20 °C)
- refractive index
- nD22 1.61
- storage temp.
- 0-6°C
- Water Solubility
- 56 mg l-1 (20 °C)
- form
- liquid
- Merck
- 13,3547
- BRN
- 1988797
- CAS DataBase Reference
- 17109-49-8(CAS DataBase Reference)
- NIST Chemistry Reference
- Phosphorodithioic acid, o-ethyl s,s-diphenyl ester(17109-49-8)
- EPA Substance Registry System
- Edifenphos (17109-49-8)
Safety
- Hazard Codes
- T,N
- Risk Statements
- 21-23/25-43-50/53-24/25-23
- Safety Statements
- 36/37-45-60-61
- RIDADR
- UN 2810
- WGK Germany
- 3
- RTECS
- TE3850000
- HazardClass
- 6.1(b)
- PackingGroup
- III
- Hazardous Substances Data
- 17109-49-8(Hazardous Substances Data)
- Toxicity
- LD50 in female, male rats (mg/kg): 25.5, 66.5 i.p. (Chen)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H317May cause an allergic skin reaction
H410Very toxic to aquatic life with long lasting effects
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
N-Bromosuccinimide Price
- Product number
- 45467
- Product name
- Edifenphos
- Purity
- PESTANAL
- Packaging
- 250mg
- Price
- $58.9
- Updated
- 2025/07/31
- Product number
- E335200
- Product name
- Edifenphos
- Packaging
- 1g
- Price
- $140
- Updated
- 2021/12/16
- Product number
- 470678
- Product name
- EDDP
- Packaging
- 1mg
- Price
- $566
- Updated
- 2021/12/16
- Product number
- 352012
- Product name
- EDDP
- Packaging
- 1mg
- Price
- $709
- Updated
- 2021/12/16
- Product number
- 470677
- Product name
- EDDP
- Packaging
- 1mg
- Price
- $731
- Updated
- 2021/12/16
Edifenphos Chemical Properties,Usage,Production
Chemical Properties
Industrial product is yellow to light brown transparent liquid with bad odor. b.p.154℃/1.33Pa, relative density 1.23 (20℃), refractive index n22D1.61. It can be soluble in methanol, ethyl ether, chloroform, acetone, benzene, xylene and other organic solvents, insoluble in water. b.p.154℃/1.33Pa, relative density 1.23 (20℃), refractive index n22D1.61. It can be soluble in methanol, ethyl ether, chloroform, acetone, benzene, xylene and other organic solvents, insoluble in water. b.p.154℃/1.33Pa, relative density 1.23 (20℃), refractive index n22D1.61. Stable in acidic condition, easy to hydrolyze or ester exchange reaction in alkaline condition, especially when the temperature is higher.
Uses
Fungicide.
Uses
Edifenphos is a foliar applied contact fungicide that provides both protective and curative control of rice blast diseases caused by Pyricularia oryzae. It also controls ear blight and stem rot in rice.
Definition
ChEBI: 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 i moderately toxic to mammals and fish but poses more of a risk to aquatic invertebrates.
Metabolic pathway
Hydrolytic cleavage of the P-0 and P-S linkages affords the major degradation and metabolic pathways of edifenphos. A unique transesterification reaction yielded tri-S-phenyl and di-O-ethyl phosphorus esters as minor products in soil and plant test systems (Scheme 1).
Degradation
The hydrolytic DT50 values of edifenphos (1) at pH 7 and 9 at 25 °C were 19 and 2 days, respectively (PM). [35S]Edifenphods egraded rapidly in aqueous solution when exposed to UV light at 25-28 °C [DT50 ca. 3 days (light exposed) vs. 19 days (dark control)]. Cleavage of the P-S linkage is the primary degradation pathway. Thiophenol (2) was further oxidised to form diphenyl disulfide (3), possibly during sample extraction, isolation and analysis. Stepwise cleavage of the P-S and P-O linkages yielded O-ethyl S-phenyl hydrogen phosphorothioate (4), S-phenyl dihydrogen phosphorothioate (5), benezenesulfonic acid (6) and sulfuric acid as major 35S-containing products, whereas O-ethyl dihydrogen phosphate (7) and phosphoric acid were recovered from the phosphorus portion of the molecule (Murai, 1977).
Toxicity evaluation
Edifenphos shows no delayed neuropathic symptoms. Safety intervals between spray and harvest for rice are 21 days in Japan with 0.2 mg of MRL (Maximum Residue Limit).
Edifenphos Preparation Products And Raw materials
Raw materials
Preparation Products
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