CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Monocrotophos appears as colorless crystals with a mild ester odor, commercial product is a reddish-brown solid. Used as a fast acting insecticide with both systemic and contact action against a wide range of pests on cotton, sugar cane, tobacco, potatoes, peanuts, tomatoes, and ornamentals. Very toxic. |
|---|---|
| Color/Form | Reddish brown solid |
| Odor | Mild, ester odor. |
| Boiling Point | 257 °F at 0.0005 mmHg (EPA, 1998) |
| Melting Point | 129 to 131 °F crystals; 77 to 86 °F commercial product (EPA, 1998) |
| Flash Point | Above 200F (EPA, 1998) |
| Solubility | Miscible (NIOSH, 2023) |
| Density | 1.22 kg/l at 20 °C |
| Vapor Pressure | 7e-06 mmHg at 68 °F (EPA, 1998) |
| LogP | log Kow = -0.20 |
| Stability/Shelf Life | On hydrolysis @ 20 °C, the calculated half-life at pH 5 = 96 days, at pH 7 = 66 days, and at pH 9 = 17 days. |
| Decomposition | WHEN HEATED TO DECOMPOSITION IT EMITS VERY TOXIC FUMES. |
| Corrosivity | Non-corrosive to aluminum. |
| Refractive Index | Index of refraction 1.4738 @ 25 °C/D |
| Collision Cross Section | 146.34 Ų [M+Na]+ 145.86 Ų [M+H]+ |
| Kovats Retention Index | 1683.1 1640.8 1662.4 |
| Other Experimental Properties | Rapidly hydrolyzed under alkaline conditions. |
| Chemical Classes | Pesticides -> Organophosphate Insecticides |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08  Environment GHS09 |
| GHS Hazard Statements |
H311:Acute toxicity,dermal H341:Germ cell mutagenicity H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P202:Do not handle until all safety precautions have been read and understood. P260:Do not breathe dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
COMPUTED DESCRIPTORS
| Molecular Weight | 223.16 g/mol |
|---|---|
| XLogP3 | -0.2 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 5 |
| Exact Mass | 223.06095954 g/mol |
| Monoisotopic Mass | 223.06095954 g/mol |
| Topological Polar Surface Area | 73.9 Ų |
| Heavy Atom Count | 14 |
| Formal Charge | 0 |
| Complexity | 267 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 1 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Monocrotophos appears as colorless crystals with a mild ester odor, commercial product is a reddish-brown solid. Used as a fast acting insecticide with both systemic and contact action against a wide range of pests on cotton, sugar cane, tobacco, potatoes, peanuts, tomatoes, and ornamentals. Very toxic.