FONOFOS
- CAS No.
- 944-22-9
- Chemical Name:
- FONOFOS
- Synonyms
- 10 G;CAPFOS;N-2790;oms410;Captos;FONOFOS;OMS 410;Dyfonat;DYFONATE;FONOPHOS
- CBNumber:
- CB2463599
- Molecular Formula:
- C10H15OPS2
- Molecular Weight:
- 246.33
- MOL File:
- 944-22-9.mol
- Modify Date:
- 2024/12/18 14:07:02
| Melting point | 32℃ |
|---|---|
| Boiling point | bp0.1 130° |
| Density | d2525 1.16 |
| vapor pressure | 2.8 x 10-2 Pa (25 °C) |
| refractive index | nD30 1.5883 |
| Flash point | 2 °C |
| storage temp. | 2-8°C |
| solubility | Chloroform (Slightly) |
| Water Solubility | 13 mg l-1(22 °C) |
| Merck | 13,4258 |
| BRN | 1958949 |
| Exposure limits | NIOSH REL: 0.1 mg/m3; ACGIH TLV: 0.1 mg/m3 |
| EPA Substance Registry System | Fonofos (944-22-9) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |     GHS06,GHS09,GHS02,GHS07 |
|---|---|
| Signal word | Danger |
| Hazard statements | H300+H310+H330-H410-H225-H302+H332-H319-H412 |
| Precautionary statements | P260-P264-P273-P280-P284-P301+P310-P210-P305+P351+P338 |
| Hazard Codes | T+,N,Xn,F |
| Risk Statements | 27/28-50/53-36-20/21/22-11-52/53-23 |
| Safety Statements | 28-36/37-45-60-61-16-26 |
| RIDADR | 3018 |
| OEB | D |
| OEL | TWA: 0.1 mg/m3 [skin] |
| WGK Germany | 3 |
| RTECS | TA5950000 |
| HazardClass | 6.1(a) |
| PackingGroup | I |
| Hazardous Substances Data | 944-22-9(Hazardous Substances Data) |
| Toxicity | LD50 in mice (mg/kg): 14.0 orally, 4.8 i.p. (Lee); LD50 in rats (mg/kg): 3-17 orally, 147 dermally (Ben-Dyke) |
FONOFOS Chemical Properties,Uses,Production
Chemical Properties
Fonofos is a highly toxic compound. It is sparingly soluble in water, but soluble in acetone, ethanol, xylene, and kerosene. It has been grouped by the US EPA under RUP and hence requires special handling by qualifi ed, certifi ed, and trained workers. Fonofos was used as a soil insecticide, which resulted in its direct release to the environment. It was primarily used on corn crops, sugar cane, peanuts, tobacco, turf, and some vegetable crops. It controls aphids, corn borer, corn root-worm, corn wire-worm, cutworms, white grubs, and some maggots. Formulations of fonofos include granular, microgranular, emulsifi able concentrate, suspension concentrate, microcapsule suspension, and for seed treatment
Uses
Fonofos is used to control soil insects in a number of crops and in turf.
General Description
Light-yellow liquid with a pungent mercaptan-like odor. Used primarily as an insecticide for corn.
Air & Water Reactions
Very slightly soluble in water.
Reactivity Profile
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. It is sparingly soluble in water but soluble in acetone, ethanol, xylene, and kerosene.
Hazard
Cholinesterase inhibitor.
Health Hazard
FONOFOS is a cholinesterase inhibitor. It can cause severe symptoms and death from respiratory arrest.
Fire Hazard
When FONOFOS is heated to decomposition, FONOFOS can emit highly toxic fumes of phosphorus oxides.
Agricultural Uses
Insecticide: It is a soil organophosphate insecticide primarily used on corn. It was also used on maize, cereals, sorghum, fruit, olives, potatoes, sugar cane, peanuts, tobacco, turf, and some vegetable crops. It controls aphids, corn borer, corn rootworm, corn wireworm, cutworms, white grubs, symphylins, and other soil pests including some maggots. It was available in granular, microgranular, emusifiable concentrate, suspension concentrate, microcapsule suspension, and seed treatment. Not registered for use in the U.S. or in EU countries. There are 16 global suppliers.
Trade name
CAPFOS®; CUDGEL®; DIFONATE®; DYFONATE®[C]; DYPHONATE®; DOUBLE DOWN®; STAUFFER-2790
Safety Profile
Poison by ingestion and skin contact. An insecticide. When heated to decomposition it emits very toxic fumes of POx and SOx.
Potential Exposure
A potential danger to those involved in the manufacture, formulation and application of this soil insecticide which is used for control of corn rootworms, wireworms, cutworms, symphylins, and other soil pests. Incompatibilities: Strong acids, alkalies.
Environmental Fate
Soil. The half-life for fonofos in soil incubated in the laboratory under aerobic conditions ranged was 25 days (Lichtenstein et al., 1977). In field soils, the half-lives for fonofos ranged from 24 to 102 days (Kiigemgi and Terriere, 1971; Schulz and Lichtenstein, 1971; Mathur et al., 1976; Talekar et al., 1977).
Plant. In plants, fonofos is oxidized to the phosphonothioate (Hartley and Kidd, 1987). Oat plants were grown in two soils treated with [14C]fonofos. Most of the residues remained bound to the soil. Less than 2% of the applied [14C]fonofos was re
Chemical/Physical. The hydrolysis half-lives of fonofos in a sterile 1% ethanol/water solution at 25°C and pH values of 4.5, 5.0, 6.0, 7.0 and 8.0, were 87, 50, 41, 22 and 6.9 weeks, respectively (Chapman and Cole, 1982). Emits toxic nitrogen and
Metabolic pathway
The metabolism of fonofos in plants and animals follows similar pathways, with both activation and degradative steps occurring as primary metabolic events. The former involves oxidative desulfuration to the active acetylcholinesterase inhibitor fonofos oxon. The oxon is hydrolysed rapidly in most biological systems and the resulting thiophenol is very rapidly metabolised via S-methylation, thiooxidation, ring hydroxylation and conjugation.
Shipping
UN2783 Organophosphorus pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
Waste Disposal
This phosphono compound is reported to be satisfactorily decomposed by hypochlorite. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.
FONOFOS Preparation Products And Raw materials
Raw materials
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