CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Chlorpyrifos methyl appears as colorless crystals. Corrosive to copper, brass, iron, and tin plate. Used as an insecticide. |
|---|---|
| Color/Form | White crystals |
| Odor | Slight mercaptan |
| Melting Point | 45.5-46.5 °C |
| Flash Point | 182 °C (Cleveland open cup) |
| Solubility | In water, 4.0 mg/L at 25 °C |
| Density | 1.64 at 23 °C |
| Vapor Pressure | 0.0000422 [mmHg] |
| LogP | log Kow = 4.31 |
| Stability/Shelf Life | Relatively stable under neutral conditions, but hydrolysed by acids (pH 4-6) &, more readily, by alkalis (pH 8-10). |
| Decomposition | When heated to decomposition it emits very toxic fumes of /hydrogen chloride, nitrogen oxides, phosphorus oxides, & sodium oxides/. |
| Collision Cross Section | 161.39 Ų [M+Na]+ 153.14 Ų [M+H]+ |
| Kovats Retention Index | 1820 1820 1829 1866 1845.7 1863.6 1824 1902 1840 1860 1855.5 |
| Chemical Classes | Pesticides -> Organophosphate Insecticides |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Environment GHS09 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H317:Sensitisation, Skin H331:Acute toxicity,inhalation H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. |
COMPUTED DESCRIPTORS
| Molecular Weight | 322.5 g/mol |
|---|---|
| XLogP3 | 4.3 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 4 |
| Exact Mass | 320.894984 g/mol |
| Monoisotopic Mass | 320.894984 g/mol |
| Topological Polar Surface Area | 72.7 Ų |
| Heavy Atom Count | 16 |
| Formal Charge | 0 |
| Complexity | 278 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Chlorpyrifos methyl appears as colorless crystals. Corrosive to copper, brass, iron, and tin plate. Used as an insecticide.