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| Names | |
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| Preferred IUPAC name 4-Isopropyl-2,6-dinitro-N,N-dipropylaniline | |
Other names
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| ChemSpider | |
| ECHA InfoCard | 100.046.977 
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InChI
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| Properties | |
| Chemical formula | C15H23N3O4 |
| Molar mass | 309.366 g·mol |
| Appearance | Orange liquid |
| Solubility in water | 0.11ppm |
| Vapor pressure | 30x10 mm Hg (30°C) |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
| Main hazards | Toxic to fish |
| GHS labelling: | |
| Pictograms |  
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| Signal word | Warning |
| Hazard statements | H226, H410 |
| Precautionary statements | P210, P233, P240, P241, P242, P243, P273, P280, P303+P361+P353, P370+P378, P391, P403+P235, P501 |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references | |
Isopropalin is a herbicide. Introduced in 1969, it is a preëmergent selective dinitroaniline to control annual grasses and broadleaf weeds. Brought by DowElanco in 1972 to the US and Australia, it is now considered obsolete. In 1974, American farmers used 250,000 pounds (110,000 kg) of isopropalin.
Paarlan was a 69% isopropalin emulsifiable concentrate approved for use on tobacco. It required soil incorporation due to low solubility, ultraviolet light degradation and high volatilisation, and it may have been registered for white potatoes and tomatoes. Dow marketed Paarlan to southern culture, with a video advert claiming it "is just as much a part of tobacco country as ham and biscuits are part of breakfast."
Rats fed diets with large amounts of isopropalin had reduced hemoglobin concentrations, lowered hematocrits, and altered organ weights at the higher doses tested.
References
- ^ "Isopropalin (Ref: EL-179)". sitem.herts.ac.uk.
- ^ Huffman, J. B.; Camper, N. D. (1978). "Growth Inhibition in Tobacco (Nicotiana tabacum) Callus by 2,6-Dinitroaniline Herbicides and Protection by D-α-Tocopherol Acetate". Weed Science. 26 (6): 527–530. ISSN 0043-1745.
- ^ "Label Amendment Submission of 08/30/93 in Response to PR Notice 93-7" (PDF). search.epa.gov. EPA. 1993.
- "Isopropalin". pubchem.ncbi.nlm.nih.gov.
- ^ "Paarlan Herbicide Emulsifiable Concentrate" (PDF). search.epa.gov. Elanco. 1975.
- "Paarlan, An Australia Trademark of DowElanco. Application Number: 255181 :: Trademark Elite Trademarks". www.trademarkelite.com.
- "Pesticide Usage Survey of Agricultural, Governmental, and Industrial Sectors in the United States, 1974". epa.gov. EPA. 1977.
- Ford, D. H.; Massey, G. D. "Characteristics of the Substituted Dinitroaniline Herbicides, Treflan, Balan, Paarlan, and EL-119".
- "Paarlan and Tobacco Country USA". NDSU Extension Pesticide Program. Retrieved 23 October 2024.
- "Isopropalin CASRN 33820-53-0 | DTXSID8024157 | IRIS". cfpub.epa.gov.
Links
- Isopropalin in the Pesticide Properties DataBase (PPDB)