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| CAS No.: | 3383-96-8 |
|---|---|
| Name: | Temephos |
| Molecular Structure: | |
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|
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| Formula: | C16H20O6P2S3 |
| Molecular Weight: | 466.477 |
| Synonyms: | Nephis 1G;O,O,O',O'-Tetramethyl O,O'-thiodi-p-phenylene phosphorothioate;Temefos;Phosphorothioic acid,Op,Op'-(thiodi-4,1-phenylene) Op,Op,Op',Op'-tetramethyl ester;Phosphorothioicacid, O,O-dimethyl ester, O,O-diester with 4,4'-thiodiphenol (7CI);Phosphorothioic acid, O,O'-(thiodi-4,1-phenylene) O,O,O',O'-tetramethyl ester(9CI);Phosphorothioic acid, O,O'-(thiodi-p-phenylene) O,O,O',O'-tetramethylester (8CI);AC 52160;Abate;Abathion;Azai-SS;Biothion;Biothon;Difenphos;Difos;Diphos; |
| EINECS: | 222-191-1 |
| Density: | 1.4 g/cm3 |
| Melting Point: | 30-31 °C |
| Boiling Point: | 518.5 °C at 760 mmHg |
| Flash Point: | 267.4 °C |
| Solubility: | 0.003 g/100 mL in water |
| Appearance: | White crystalline solid or liquid. |
| Hazard Symbols: |
 Xn,  N
|
| Risk Codes: | 21/22-51/53 |
| Safety: | 22-37-61-60 |
| Transport Information: | UN 3077 |
| PSA: | 164.48000 |
| LogP: | 6.93120 |
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Consensus Reports
Reported in EPA TSCA Inventory.
Standards and Recommendations
OSHA PEL: TWA Total Dust: 10 mg/m3; Respirable Fraction: 5 mg/m3
ACGIH TLV: TWA 10 mg/m3
Specification
Temephos, its cas register number is 3383-96-8. It also can be called Biothion; Bis-p-(O,O-dimethyl O-phenylphosphorothioate)sulfide; Bithion; Difenphos; Difos; Diphos; Diphos (pesticide); EPA Pesticide Chemical Code 059001; Etidronsaeure; Lypor; Nephis; Nimitex; O,O'-(Thiodi-4,1-phenylene) O,O,O',O'-tetramethyl di(phosphorothioate); Phenol, 4,4'-thiodi-, O,O-diester with O,O-dimethyl phosphorothioate; Procida; Swebat; Temefosum; Tetramethyl O,O'-thiodi-p-phenylene phosphorothioate. Temephos is a White crystalline solid or liquid. Temefos or Temephos(CAS NO.3383-96-8) (trade name Abate) is an organophosphate larvicide used to treat water infested with disease-carrying fleas. It is also used to control mosquito, midge, and black fly larvae. Temephos is also used in the Guinea Worm Eradication program to kill water fleas that carry guinea worm larvae.
Physical properties about Temephos are: (1)ACD/LogP: 5.96; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.96; (4)ACD/LogD (pH 7.4): 5.96; (5)ACD/BCF (pH 5.5): 19934.28; (6)ACD/BCF (pH 7.4): 19934.28; (7)ACD/KOC (pH 5.5): 41614.13; (8)ACD/KOC (pH 7.4): 41614.13; (9)#H bond acceptors: 6; (10)#Freely Rotating Bonds: 10; (11)Index of Refraction: 1.613; (12)Molar Refractivity: 115.908 cm3; (13)Molar Volume: 333.17 cm3; (14)Polarizability: 45.95 10-24cm3; (15)Surface Tension: 61.8219985961914 dyne/cm; (16)Density: 1.4 g/cm3; (17)Flash Point: 267.385 °C; (18)Enthalpy of Vaporization: 76.123 kJ/mol; (19)Boiling Point: 518.508 °C at 760 mmHg
When you are using this chemical, please be cautious about it as the following:
1. Do not breathe dust;
2. Wear suitable gloves;
3. Avoid release to the environment. Refer to special instructions safety data sheet;
4. This material and/or its container must be disposed of as hazardous waste;
You can still convert the following datas into molecular structure:
(1)InChI=1S/C16H20O6P2S3/c1-17-23(25,18-2)21-13-5-9-15(10-6-13)27-16-11-7-14(8-12-16)22-24(26,19-3)20-4/h5-12H,1-4H3;
(2)InChIKey=WWJZWCUNLNYYAU-UHFFFAOYSA-N;
(3)SmilesP(Oc1ccc(Sc2ccc(OP(OC)(OC)=S)cc2)cc1)(OC)(OC)=S;
The toxicity data is as follows:
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| bird - wild | LD50 | oral | 32mg/kg (32mg/kg) | Toxicology and Applied Pharmacology. Vol. 20, Pg. 57, 1971. | |
| chicken | LD | subcutaneous | > 1gm/kg (1000mg/kg) | BEHAVIORAL: MUSCLE WEAKNESS | Archives of Environmental Health. Vol. 14, Pg. 283, 1967. |
| duck | LD50 | oral | 79mg/kg (79mg/kg) | Toxicology and Applied Pharmacology. Vol. 20, Pg. 57, 1971. | |
| mammal (species unspecified) | LD50 | oral | 4700mg/kg (4700mg/kg) | Journal of the American Veterinary Medical Association. Vol. 152, Pg. 282, 1968. | |
| mammal (species unspecified) | LD50 | unreported | 4gm/kg (4000mg/kg) | "Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 338, 1971. | |
| mouse | LD50 | intraperitoneal | 683mg/kg (683mg/kg) | BEHAVIORAL: TREMOR BEHAVIORAL: ATAXIA BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX) | Toho Igakkai Zasshi. Journal of Medical Society of Toho University. Vol. 16, Pg. 297, 1969. |
| mouse | LD50 | oral | 223mg/kg (223mg/kg) | Agricultural Research Service, USDA Information Memorandum. Vol. 20, Pg. 1, 1966. | |
| pigeon | LD50 | oral | 50mg/kg (50mg/kg) | Toxicology and Applied Pharmacology. Vol. 20, Pg. 57, 1971. | |
| quail | LD50 | oral | 75mg/kg (75mg/kg) | Archives of Environmental Contamination and Toxicology. Vol. 12, Pg. 355, 1983. | |
| rabbit | LD50 | oral | 313mg/kg (313mg/kg) | Veterinariya. Veterinary Science. Vol. 60(11), Pg. 63, 1984. | |
| rabbit | LD50 | skin | 970mg/kg (970mg/kg) | Toxicological Information on Cyanamid Insecticides. Vol. 8/1966, | |
| rat | LD50 | intraperitoneal | 912mg/kg (912mg/kg) | BEHAVIORAL: TREMOR BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS | Toho Igakkai Zasshi. Journal of Medical Society of Toho University. Vol. 16, Pg. 297, 1969. |
| rat | LD50 | oral | 1gm/kg (1000mg/kg) | Guide to the Chemicals Used in Crop Protection. Vol. 6, Pg. 493, 1973. | |
| rat | LD50 | skin | 1370mg/kg (1370mg/kg) | World Review of Pest Control. Vol. 9, Pg. 119, 1970. | |
| rat | LD50 | subcutaneous | 2302mg/kg (2302mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) | Toho Igakkai Zasshi. Journal of Medical Society of Toho University. Vol. 16, Pg. 297, 1969. |
| rat | LD50 | unreported | 8600mg/kg (8600mg/kg) | Travaux de la Societe de Pharmacie de Montpellier. Vol. 37(1), Pg. 45, 1977. |