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Name	Fonofos	EINECS	N/A
CAS No.	944-22-9	Density	1.17g/cm³
PSA	76.43000	LogP	4.79520
Solubility	13 mg l-1(22 °C)	Melting Point	32℃
Formula	C10H15 O P S2	Boiling Point	323.7°Cat760mmHg
Molecular Weight	246.334	Flash Point	149.5°C
Transport Information	N/A	Appearance	N/A
Safety	Poison by ingestion and skin contact. An insecticide. When heated to decomposition it emits very toxic fumes of PO_x and SO_x.	Risk Codes	27/28-50/53-36-20/21/22-11
Molecular Structure		Hazard Symbols	Cholinesterase inhibitor.
Synonyms	Phosphonodithioicacid, ethyl-, O-ethyl S-phenyl ester (6CI,7CI,8CI,9CI); (?à)-Fonofos; Difonate; Difonatul;Dyfonat; Dyfonate; Dyfonate 10G; Dyfonate 20G; Dyphonate; Fonofos; Fonophos; N2790; O-Ethyl S-phenyl ethyldithiophosphonate; O-Ethyl S-phenylethylphosphonodithioate; Stauffer N 2790

Fonofos Chemical Properties

Chemistry informtion about Fonofos (CAS NO.944-22-9) is:
IUPAC Name: Ethoxy-Ethyl-Phenylsulfanyl-Sulfanylidene-$L^{5}-Phosphane
Synonyms: Capfos ; Fonofos ; Fonofos Emulsion(Content<6%) ; Fonofos Powder Granules ; Fonophos ; Dyfonate ; Dyfonate Emulsion ; Dyfonate Powder
Product Categories: Alpha sort ; E-GAlphabetic ; F ; FM - FZPesticides ; Insecticides ; Organophorous ; Pesticides&Metabolites
MF: C₁₀H₁₅OPS₂
MW: 246.33
EINECS: 213-408-0
Density: 1.17 g/cm³
Flash Point: 149.5 °C
Boiling Point: 323.7 °C at 760 mmHg
Vapour Pressure: 0.000488 mmHg at 25°C
Enthalpy of Vaporization: 54.31 kJ/mol
Storage temp.: 2-8°C
Merck: 13,4258
Following is the molecular structure of Fonofos (CAS NO.944-22-9) is:

Fonofos Uses

Fonofos (CAS NO.944-22-9) can be used primarily as an insecticide for corn.

Fonofos Production

Raw Materials are Phosphorus Pentachloride-->Chlorosulfonic Acid-->Thiophosphoryl Chloride-->Triethyl Phosphite-->Thiophenol-->Benzenesulfonic Acid Sodium Salt-->Phosphine-->Sodium Thiophenoxide-->Fonofos

Fonofos Toxicity Data With Reference

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
bird - wild	LD50	oral	10mg/kg (10mg/kg)		ASTM Special Technical Publication. Vol. (680), Pg. 157, 1979.
dog	LD50	oral	3mg/kg (3mg/kg)		VM/SAC, Veterinary Medicine and Small Animal Clinician. Vol. 74, Pg. 1119, 1979.
domestic animals - goat/sheep	LD50	oral	1300ug/kg (1.3mg/kg)		American Journal of Veterinary Research. Vol. 43, Pg. 1672, 1982.
guinea pig	LD50	skin	278mg/kg (278mg/kg)		"Pesticide Index," Frear, E.H., ed., State College, PA, College Science Pub., 1969Vol. 5, Pg. 118, 1976.
mammal (species unspecified)	LD50	unreported	17mg/kg (17mg/kg)		"Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 385, 1971.
pigeon	LD50	oral	13300ug/kg (13.3mg/kg)		ASTM Special Technical Publication. Vol. (680), Pg. 157, 1979.
quail	LD50	oral	12mg/kg (12mg/kg)	behavioral: convulsions or effect on seizure threshold behavioral: ataxia lungs, thorax, or respiration: dyspnea	Ecotoxicology and Environmental Safety. Vol. 8, Pg. 551, 1984.
rabbit	LD50	skin	25mg/kg (25mg/kg)		Farm Chemicals Handbook. Vol. -, Pg. C120, 1991.
rat	LC50	inhalation	1900mg/m3/1H (1900mg/m3)		"Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A214, Pg. 1983,
rat	LD50	oral	3mg/kg (3mg/kg)		World Review of Pest Control. Vol. 9, Pg. 119, 1970.
rat	LD50	skin	147mg/kg (147mg/kg)		World Review of Pest Control. Vol. 9, Pg. 119, 1970.

Fonofos Consensus Reports

EPA Genetic Toxicology Program. EPA Extremely Hazardous Substances List.

Fonofos Safety Profile

Poison by ingestion and skin contact. An insecticide. When heated to decomposition it emits very toxic fumes of PO_x and SO_x.
Hazard Codes:
Very T+
Dangerous N
Harmful Xn
Flammable F
Risk Statements:
R27/28:Very toxic in contact with skin and if swallowed.
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
R36:Irritating to eyes.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
R11:Highly flammable.
Safety Statements:
S28:After contact with skin, wash immediately with plenty of soap-suds.
S36/37:Wear suitable protective clothing and gloves.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S60:This material and its container must be disposed of as hazardous waste.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
S16:Keep away from sources of ignition.
RIDADR: 3018
RTECS: TA5950000
HazardClass: 6.1(a)
PackingGroup: I

Fonofos Standards and Recommendations

OSHA PEL: TWA 0.1 mg/m³ (skin)
ACGIH TLV: TWA 0.1 mg/m³ (skin); Not Classifiable as a Human Carcinogen

Fonofos Specification

Fonofos (CAS NO.944-22-9) is a light-yellow liquid with a pungent mercaptan-like odor.It is very slightly soluble in water.Organothiophosphates, such as Fonofos, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides. Fonofos is a cholinesterase inhibitor. It can cause severe symptoms and death from respiratory arrest. When Fonofos is heated to decomposition, it can emit highly toxic fumes of phosphorus oxides.

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