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Basic Information
| CAS No.: | 55-38-9 |
|---|---|
| Name: | Fenthion |
| Molecular Structure: | |
|
|
|
| Formula: | C10H15O3PS2 |
| Molecular Weight: | 278.333 |
| Synonyms: | Phosphorothioicacid (H3PO3S), O,O-dimethyl O-4-(methylthio)-m-tolyl ester (6CI);Phosphorothioicacid, O,O-dimethyl O-[4-(methylthio)-m-tolyl] ester (8CI);m-Cresol, 4-(methylthio)-,O-ester with O,O-di-Me phosphorothioate (6CI);B 29493;BAY 29493;Baycid;Bayer 9007;Baytex;Dimethyl 4-methylthio-m-tolyl phosphorothioate;ENT 25540;Entex;Fenthion-methyl;Lebaycid;MPP;MPP (pesticide);Mercaptofos;Mercaptophos;O,O-DimethylO-4-(methylmercapto)-3-methylphenyl thiophosphate;O,O-DimethylO-[4-(methylthio)-m-tolyl] phosphorothioate;OMS 2;Queletox;Spotton;Talodex; |
| EINECS: | 200-231-9 |
| Density: | 1.25 g/cm3 |
| Melting Point: | 7.5 °C |
| Boiling Point: | 330 °C at 760 mmHg |
| Flash Point: | 153.4 °C |
| Solubility: | water: 0.0055 g/100 mL |
| Appearance: | yellow brown oily liquid |
| Hazard Symbols: |
 T, N
|
| Risk Codes: | 21/22-23-48/25-50/53-68-67-65-38-11 |
| Safety: | 36/37-45-60-61-62 |
| Transport Information: | UN 2810/3017 |
| PSA: | 94.89000 |
| LogP: | 4.26360 |
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Synthetic route
- 154469-89-3
dimethyl-(3-methyl-4-methylthiophenyl)phosphite
- 55-38-9
fenthion
Conditions
| Conditions | Yield |
|---|---|
| With sulfur for 3h; Ambient temperature; | 73% |
Conditions
| Conditions | Yield |
|---|---|
| With selenium(IV) oxide; dihydrogen peroxide In methanol Oxidation; | |
| With selenium(IV) oxide; dihydrogen peroxide In methanol at 20℃; for 0.25h; Oxidation; |
- 55-38-9
fenthion
Conditions
| Conditions | Yield |
|---|---|
| With potassium permanganate In water; acetic acid for 12h; Oxidation; | |
| With potassium permanganate; acetic acid at 20℃; for 12h; Oxidation; |
- 55-38-9
fenthion
A
- 3761-41-9
(+)-Fenthion sulfoxide
B
- 6552-12-1
Fenthion oxon
D
- 6552-13-2
fenthion oxon sulfoxide
Conditions
| Conditions | Yield |
|---|---|
| With water In phosphate buffer at 25℃; pH=7; Thermodynamic data; Further Variations:; pH-values; Temperatures; Hydrolysis; |
...Expand
- 55-38-9
fenthion
- 14086-35-2
fenthion oxon sulfone
Conditions
| Conditions | Yield |
|---|---|
| With potassium permanganate; acetic acid at 20℃; for 16h; Oxidation; |
Conditions
| Conditions | Yield |
|---|---|
| With bromine In acetonitrile |
Conditions
| Conditions | Yield |
|---|---|
| UV-irradiation; |
...Expand
- 55-38-9
fenthion
A
- 3120-74-9
4-(methylthio)-m-cresol
B
- 14143-28-3
3-methyl-4-(methylsulfinyl)phenol
C
- 3761-41-9
(+)-Fenthion sulfoxide
Conditions
| Conditions | Yield |
|---|---|
| With air; water UV-irradiation; |
...Expand
- 55-38-9
fenthion
Conditions
| Conditions | Yield |
|---|---|
| With chloride In water UV-irradiation; |
- 55-38-9
fenthion
- 14143-28-3
3-methyl-4-(methylsulfinyl)phenol
Conditions
| Conditions | Yield |
|---|---|
| Multi-step reaction with 2 steps 1: SeO2; H2O2 / methanol / 0.25 h / 20 °C 2: aq. 1N NaOH / ethanol / 8 h / 50 - 60 °C View Scheme |
- Total:19 Page 1 of 1 1
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Fenthion
Chemistry
MF: C10H15O3PS2
MW: 278.33
EINECS: 200-231-9
Product Categories: INSECTICIDE
Mol File: 55-38-9.mol
mp： 7.5°C
bp： 87°C (0.01 mmHg)
density： 1.25
Fp： >100 °C
storage temp： 2-8°C
Water Solubility： 0.0055 g/100 mL
Merck： 13,4030
Synonyms:LEBAYCID;LEBAYCID(R);FENCHEM;FENTHION;FASTER;ENTEX(R);ENT 25540;BEILIULIN
The structure of Fenthion(55-38-9) is:
Uses
1、Fenthion(55-38-9) is a contact and stomach insecticide used against many sucking, biting pests. It has been widely used in sugar cane, rice, field corn, beets, pome and stone fruit, citrus fruits, pistachio, cotton, olives, coffee, cocoa, vegetables, and vines.
2、Based on its high toxicity on birds, fenthion(55-38-9) has been used to control weaver birds and other pest-birds in many parts of the world. Fenthion is also used in cattle, swine, and dogs to control lice, fleas, ticks, flies, and other external parasites.
2、Based on its high toxicity on birds, fenthion(55-38-9) has been used to control weaver birds and other pest-birds in many parts of the world. Fenthion is also used in cattle, swine, and dogs to control lice, fleas, ticks, flies, and other external parasites.
Toxicity Data With Reference
| 1. | mma-sat 333 µg/plate | ENMUDM Environmental Mutagenesis. 8 (Suppl 7)(1986),1. | ||
| 2. | sce-ham:lng 40 mg/L | ENMUDM Environmental Mutagenesis. 4 (1982),621. | ||
| 3. | orl-man TDLo:257 mg/kg:CVS,GIT | JTCTDW Journal of Toxicology, Clinical Toxicology. 19 (1982),425. | ||
| 4. | unr-hmn LD50:50 mg/kg | DTLVS* Documentation of Threshold Limit Values for Substances in Workroom Air. 4 (1980),191. | ||
| 5. | orl-rat LD50:180 mg/kg | KSKZAN Khimiya v Sel’skom Khozyaistve. Chemistry in Agriculture. 16 (2)(1978),59. | ||
| 6. | ihl-rat LC50:800 mg/m3/4H | 85INA8 Documentation of the Threshold Limit Values and Biological Exposure Indices. 6 (1991),646. | ||
| 7. | skn-rat LD50:330 mg/kg | TXAPA9 Toxicology and Applied Pharmacology. 2 (1960),88. | ||
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Consensus Reports
NCI Carcinogenesis Bioassay Completed; Results Negative: rat NCITR* National Cancer Institute Carcinogenesis Technical Report Series. (Bethesda, MD 20014) No. NCI-CG-TR-103 ,1979. ; Indefinite: mouse NCITR* National Cancer Institute Carcinogenesis Technical Report Series. (Bethesda, MD 20014) No. NCI-CG-TR-103 ,1979. . EPA Genetic Toxicology Program.
Safety Profile
Hazard Codes： T;N,N,T,Xn,F
Risk Statements:Harmful if swallowed；Toxic by inhalation；Very Toxic if swallowed
Safety Statements:Wear suitable protective clothing；This material and/or its container must be disposed of as hazardous waste
RIDADR： UN 2810/3017
RTECS： TF9625000
HazardClass： 6.1(b)
PackingGroup： III
A human poison by an unspecified route. Poison experimentally by ingestion, skin contact, intraperitoneal, intravenous, and intramuscular routes. Moderately toxic by inhalation. Human systemic effects by ingestion: pulse rate increase, hypermotility, diarrhea, nausea or vomiting. Experimental teratogenic and reproductive effects. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits very toxic fumes of POx and SOx.
Risk Statements:Harmful if swallowed；Toxic by inhalation；Very Toxic if swallowed
Safety Statements:Wear suitable protective clothing；This material and/or its container must be disposed of as hazardous waste
RIDADR： UN 2810/3017
RTECS： TF9625000
HazardClass： 6.1(b)
PackingGroup： III
A human poison by an unspecified route. Poison experimentally by ingestion, skin contact, intraperitoneal, intravenous, and intramuscular routes. Moderately toxic by inhalation. Human systemic effects by ingestion: pulse rate increase, hypermotility, diarrhea, nausea or vomiting. Experimental teratogenic and reproductive effects. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits very toxic fumes of POx and SOx.
Standards and Recommendations
OSHA PEL: TWA 0.2 mg/m3 (skin)
ACGIH TLV: TWA 0.2 mg/m3 (skin); Not Classifiable as a Human Carcinogen
DFG MAK: 0.2 mg/m3
ACGIH TLV: TWA 0.2 mg/m3 (skin); Not Classifiable as a Human Carcinogen
DFG MAK: 0.2 mg/m3
Specification
Health effects
Fenthion exposure to general population is quite limited based on its bioavailability. Common form of fenthion exposure is occupation related, and occurs through dermal contact or inhalation of dust and sprays.Another likely means of contamination is through ingestion of food, especially, if it has been applied quite recently with fenthion.So far, ingestion is the most likely severe poisoning case on humans and animals.
Fenthion exposure to general population is quite limited based on its bioavailability. Common form of fenthion exposure is occupation related, and occurs through dermal contact or inhalation of dust and sprays.Another likely means of contamination is through ingestion of food, especially, if it has been applied quite recently with fenthion.So far, ingestion is the most likely severe poisoning case on humans and animals.