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CAS NO.2921-88-2
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| Clorpyrifos Basic information |
| Product Name: | Clorpyrifos |
| Synonyms: | DURSBAN;dursban hf;DURSBAN(R);DOWCO 179;Eradex;CHLORPYRIFOS;chlorpyrifos-ethyl;Chlorpyritos |
| CAS: | 2921-88-2 |
| MF: | C9H11Cl3NO3PS |
| MW: | 350.59 |
| EINECS: | 220-864-4 |
| Product Categories: | Organics;INSECTICIDE;Intermediates & Fine Chemicals;Pharmaceuticals;AcaricidesPesticides&Metabolites;CAlphabetic;CHMethod Specific;Endocrine Disruptors (Draft)Pesticides&Metabolites;NematicidesPesticides;OrganophorousMore...Close...;Alpha sort;C;EPA;Insecticides;Pesticides;Pesticides&Metabolites;AcaricidesAlphabetic;CHPesticides;Organophorous;Heterocycles;Phosphorylating and Phosphitylating Agents;NULL;DURSBAN |
| Mol File: | 2921-88-2.mol |
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| Clorpyrifos Chemical Properties |
| mp | 42-44°C |
| bp | 200°C |
| density | 1.398 |
| Fp | 2 °C |
| storage temp. | APPROX 4°C |
| Water Solubility | Insoluble. 0.00013 g/100 mL |
| Merck | 13,2208 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 2921-88-2(CAS DataBase Reference) |
| NIST Chemistry Reference | o,o-Diethyl-o-(3,5,6-trichloro-2-pyridyl)phosphorothioate(2921-88-2) |
| EPA Substance Registry System | Phosphorothioic acid, O,O-diethyl O-(3,5,6-trichloro-2-pyridinyl) ester(2921-88-2) |
| Safety Information |
| Hazard Codes | T;N,N,T,Xn,F,Xi |
| Risk Statements | 25-50/53-36-20/21/22-11-38 |
| Safety Statements | 1/2-45-60-61-36/37-26-16 |
| RIDADR | UN 2783 |
| RTECS | TF6300000 |
| HazardClass | 6.1(b) |
| PackingGroup | III |
| Hazardous Substances Data | 2921-88-2(Hazardous Substances Data) |
| Clorpyrifos Usage And Synthesis |
| Chemical Properties | White Granular Crystals |
| Usage | Insecticide; acaricide |
| General Description | Clorpyrifos is a white crystalline or irregularly flaked solid. Clorpyrifos has a very faint mercaptan-type odor. Clorpyrifos is not soluble in water. Clorpyrifos can cause slight irritation to the eye and skin. |
| Air & Water Reactions | Insoluble in water. Clorpyrifos reacts with water and most reactive hydrogen compounds. The rate of hydrolysis in water increases with pH, with temperature and with the presence of copper and possibly other metals that can form chelates. |
| Reactivity Profile | Clorpyrifos is sensitive to heat and is decomposed by moisture. Clorpyrifos is hydrolyzed by strong alkalis. Clorpyrifos is corrosive to copper and brass. Clorpyrifos is also corrosive to copper alloys. Clorpyrifos reacts with water and most reactive hydrogen compounds. The rate of hydrolysis in water increases with pH, with temperature and with the presence of copper and possibly other metals that can form chelates. |
| Health Hazard | Symptoms of organophosphate insecticide poisoning: cholinesterase inhibition, headache, fatiguedizziness, blurred vision, weakness, nausea, cramps, diarrhea, chest discomfort, sweating, miosis, tearing, salivation, vomiting, cyanosis, papilledema, and muscle twitching. In advanced cases convulsions, coma, loss of reflexes, and loss of sphincter control may occur. EYES: Can produce mild to moderate eye irritation and transient corneal injury. SKIN: Undiluted liquid products can cause skin irritation. Prolonged or repeated exposure may cause superficial burns. |
| Fire Hazard | Combustible material: may burn but does not ignite readily. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. |