CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Pyrethrins, [solid] appears as colorless to white liquids (or tan dusts). Primarily a threat to the environment. Immediate steps should be taken to limit spread to the environment. Easily penetrate the soil, contaminate groundwater or nearby waterways. Toxic by inhalation, skin absorption and/or ingestion. Used as pesticide. Practically insoluble in water. |
|---|---|
| Color/Form | Refined extract is pale yellow mobile oil; unrefined extract is a dark greenish brown viscous liquid; powder (ground flowers) is a tan color. |
| Odor | Characteristic odor of carrier |
| Boiling Point | BP: 170 °C (0.1 mm Hg), decomposes |
| Flash Point | 180 to 190 °F (NIOSH, 2023) |
| Solubility | Insoluble (NIOSH, 2023) |
| Density | 1 (approx) (NIOSH, 2023) |
| Vapor Pressure | Low (NIOSH, 2023) |
| LogP | 5.9 (pyrethrin II) |
| Stability/Shelf Life | Pyrethrums are highly unstable in the presence of light, moisture, and air. Whole flowers decompose more slowly than ground flowers or dust. Stored powders lose about 20% of their potency in one year. The potency of the pyrethrums can best be preserved in sealed, lightproof containers kept at lower temperatures. |
| Decomposition | When heated to decomposition it emits acrid smoke and irritating fumes. |
| Corrosivity | Non-corrosive |
| Other Experimental Properties | Not compatible with alkaline material |
| Chemical Classes | Pesticides -> Pyrethrins/Pyrethroids |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Environment GHS09 |
| GHS Hazard Statements |
H312:Acute toxicity,dermal 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+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
COMPUTED DESCRIPTORS
| Molecular Weight | 700.9 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 8 |
| Rotatable Bond Count | 16 |
| Exact Mass | 700.39751874 g/mol |
| Monoisotopic Mass | 700.39751874 g/mol |
| Topological Polar Surface Area | 113 Ų |
| Heavy Atom Count | 51 |
| Formal Charge | 0 |
| Complexity | 1390 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 3 |
| Undefined Atom Stereocenter Count | 3 |
| Defined Bond Stereocenter Count | 3 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 2 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Pyrethrins, [solid] appears as colorless to white liquids (or tan dusts). Primarily a threat to the environment. Immediate steps should be taken to limit spread to the environment. Easily penetrate the soil, contaminate groundwater or nearby waterways. Toxic by inhalation, skin absorption and/or ingestion. Used as pesticide. Practically insoluble in water.