CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Temephos appears as white crystalline solid or liquid (above 87 °F). Used as an insecticide. Technical grade is a viscous brown liquid. (NIOSH, 2022) |
|---|---|
| Color/Form | Colorless crystals |
| Boiling Point | 248 to 257 °F at 760 mmHg (Decomposes) (NIOSH, 2023) |
| Melting Point | 87 °F (NIOSH, 2023) |
| Flash Point | ABATE 4-E 167 °F (Closed Cup); ABATE 6-E 109 °F (Closed Cup); ABATE 200-E 113 °F (Closed Cup); ABATE 500-E 142 °F (Closed Cup) |
| Solubility | Insoluble (NIOSH, 2023) |
| Density | 1.32 (NIOSH, 2023) - Denser than water; will sink |
| Vapor Pressure | 7e-08 mmHg at 77 °F (NIOSH, 2023) |
| LogP | log Kow = 5.96 |
| Stability/Shelf Life | Stable indefinitely at room temperature; no observed hydrolysis at pH 8 at room temp for several wk or at pH 11 at 40 °C for several hr. |
| Decomposition | When heated to decomposition it emits toxic /phosphorus oxide and sulfur oxide/ fumes. |
| Collision Cross Section | 203.3 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine and drug standards] |
| Kovats Retention Index | 3096.8 |
| Other Experimental Properties | Color: brown viscous liquid; density: 1.32; index of refraction: 1.586 to 1.588 at 25 °C/D. /Technical temephos/ |
| 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 H311:Acute toxicity,dermal H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. 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. |
COMPUTED DESCRIPTORS
| Molecular Weight | 466.5 g/mol |
|---|---|
| XLogP3 | 6 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 9 |
| Rotatable Bond Count | 10 |
| Exact Mass | 465.98972587 g/mol |
| Monoisotopic Mass | 465.98972587 g/mol |
| Topological Polar Surface Area | 145 Ų |
| Heavy Atom Count | 27 |
| Formal Charge | 0 |
| Complexity | 474 |
| 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
Temephos appears as white crystalline solid or liquid (above 87 °F). Used as an insecticide. Technical grade is a viscous brown liquid. (NIOSH, 2022)