clopyralid

3,6-dichloro-2-pyridinecarboxylic acid

CAS: 1702-17-6 C6 H3 Cl2 N O2 MW: 191.99931000

Identification

Nameclopyralid
IUPAC3,6-dichloropyridine-2-carboxylic acid
CAS Number1702-17-6
EINECS216-935-4
FDA UNII10G14M0WDH
Molecular FormulaC6 H3 Cl2 N O2
Molecular Weight191.99931000
MDL NumberMFCD00078655
Nikkaji NumberJ7.566C
Beilstein0473755

Regulatory

Physical Properties

Appearance white crystalline solid (est)
Assay 95.00 to 100.00
Food Chemicals Codex Listed No
Melting Point 151.00 °C. @ 760.00 mm Hg
Boiling Point 323.70 °C. @ 760.00 mm Hg (est)
Vapor Pressure 9.980000 mmHg @ 25.00 °C. (est)
Flash Point 301.00 °F. TCC ( 149.60 °C. ) (est)
logP (o/w) 1.060
Soluble in water, 7850 mg/L @ 20 °C (exp)

No sensory data available

Safety Information

Oral/Parenteral Toxicityoral-duck LD50 1465 mg/kg
Dermal Toxicityskin-rabbit LD50 > 2000 mg/kg
Inhalation ToxicityNot determined

GHS Classification

['GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)', 'GHS Label elements, including precautionary statements']

Safety in Use

Categoryherbicides / pesticides
Recommendation for clopyralid usage levels up tonot for fragrance use.
Recommendation for clopyralid flavor usage levels up tonot for flavor use.

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Potential Uses

None Found

Natural Occurrence

not found in nature

Synonyms

benzalox cirtoxin cliophar clopyralide crusader S 3,6- dichloro-2-pyridinecarboxylic acid 3,6- dichloropicolinic acid 3,6- dichloropyridine-2-carboxylic acid dowco 290 huiloralid loncid lontrel 100 lontrel 300 matrigon 2- pyridine carboxylic acid, 3,6-dichloro- transline versatill PubMed: Assessment of Envi-Carb™ as a passive sampler binding phase for acid herbicides without pH adjustment. PubMed: Mixed-mode solid-phase extraction coupled with liquid chromatography tandem mass spectrometry to determine phenoxy acid, sulfonylurea, triazine and other selected herbicides at nanogram per litre levels in environmental waters. PubMed: Occurrence and distribution of organic trace substances in waters from the Three Gorges Reservoir, China. PubMed: Spatial variation in herbicide leaching from a marine clay soil via subsurface drains. PubMed: Influence of usage and chemical-physical properties on the atmospheric transport and deposition of pesticides to agricultural regions of Manitoba, Canada. PubMed: Effects of herbicide mixture on microbial communities in prairie wetland ecosystems: a whole wetland approach. PubMed: Simultaneous determination of aminopyralid, clopyralid, and picloram residues in vegetables and fruits using ultra-performance liquid chromatography/tandem mass spectrometry. PubMed: Effects of glyphosate and two herbicide mixtures on microbial communities in prairie wetland ecosystems: a mesocosm approach. PubMed: Montmorillonite-chitosan bionanocomposites as adsorbents of the herbicide clopyralid in aqueous solution and soil/water suspensions. PubMed: Enhancing concentration and mass sensitivities for liquid chromatography trace analysis of clopyralid in drinking water. PubMed: Simultaneous analysis of pesticides from different chemical classes by using a derivatisation step and gas chromatography-mass spectrometry. PubMed: Occurrence of glyphosate and acidic herbicides in select urban rivers and streams in Canada, 2007. PubMed: Risk assessment of the use of PAS100 green composts in sheep and cattle production in Scotland. PubMed: Dissipation and transport of clopyralid in soil: effect of application strategies. PubMed: Using herbicides in spring rapeseed and effect on quantity and quality parameters of yeald. PubMed: Residue dynamics of clopyralid and picloram in rape plant rapeseed and field soil. PubMed: Analytical method for assessing potential dermal exposure to pesticides of a non-agricultural occupationally exposed population. PubMed: Photocatalytic degradation of mecoprop and clopyralid in aqueous suspensions of nanostructured N-doped TiO2. PubMed: Photocatalytic degradation of selected herbicides in aqueous suspensions of doped titania under visible light irradiation. PubMed: An ecological risk assessment of the acute and chronic effects of the herbicide clopyralid to rainbow trout (Oncorhynchus mykiss). PubMed: Pea (Pisum sativum) seed production as an assay for reproductive effects due to herbicides. PubMed: Photodegradation of clopyralid in TiO2 suspensions: identification of intermediates and reaction pathways. PubMed: Photodegradation of bentazon, clopyralid, and triclopyr on model leaves: importance of a systematic evaluation of pesticide photostability on crops. PubMed: Using lysimeters to evaluate the relative mobility and plant uptake of four herbicides in a rye production system. PubMed: [Determination of clopyralid in wastewater by ion chromatography production]. PubMed: Using accelerated life testing procedures to compare the relative sensitivity of rainbow trout and the federally listed threatened bull trout to three commonly used rangeland herbicides (picloram, 2,4-D, and clopyralid). PubMed: Determination of chlorinated acid herbicides in vegetation and soil by liquid chromatography/electrospray-tandem mass spectrometry. PubMed: Pesticides in surface drinking-water supplies of the northern Great Plains. PubMed: [Products of the photolysis of 3,6-dichloropicolinic acid (the herbicide lontrel) in aqueous solutions]. PubMed: The effectiveness of management interventions used to control ragwort species. PubMed: Picloram resistance in transgenic tobacco expressing an anti-picloram scFv antibody is due to reduced translocation. PubMed: Optimal growth of Dunaliella primolecta in axenic conditions to assay herbicides. PubMed: [Biochemical and photochemical degradation of the herbicide lontrel]. PubMed: Toxicity of herbicides in highway runoff. PubMed: Physiological and biochemical characterization of quinclorac resistance in a false cleavers (Galium spurium L.) biotype. PubMed: Herbicide runoff along highways. 2. Sorption control. PubMed: Herbicide runoff along highways. 1. Field observations. PubMed: Quantitative expression analysis of GH3, a gene induced by plant growth regulator herbicides in soybean. PubMed: Inheritance of resistance to clopyralid and picloram in yellow starthistle (Centaurea solstitialis L.) is controlled by a single nuclear recessive gene. PubMed: Dissipation of the herbicide clopyralid in an allophanic soil: laboratory and field studies. PubMed: Herbicide resistance in Aster squamatus conferred by a less sensitive form of acetolactate synthase. PubMed: Improved analytical procedure for determination of clopyralid in soil using gas chromatography. PubMed: Herbicide and nutrient transport from an irrigation district into the South Saskatchewan River. PubMed: [Effects of phenoxy carboxylic acid herbicides on plant photosynthetic and soil microbiological activities]. PubMed: Multiresidue herbicide analysis in soil:  subcritical water extraction with an on-line sorbent trap. PubMed: Northern bobwhite egg hatchability and chick immunocompetence following a field application of clopyralid. PubMed: Effects of herbicides on two submersed aquatic macrophytes, Potamogeton pectinatus L. and Myriophyllum sibiricum Komarov, in a prairie wetland. PubMed: [The reaction of the endocrine cells of the gastrointestinal tract in response to exposure to 3,6-dichloropicolinic acid]. PubMed: Persistence studies with the herbicide clopyralid in prairie soils at different temperatures. PubMed: Changes in the morphological status of some internal organs in animals exposed to the action of chemicals. PubMed: Analysis of the herbicides dicamba, clopyralid and bromacil in asparagus by high-performance liquid chromatography. PubMed: Residues of clopyralide (3,6-dichloropicolinic acid) in strawberries and their changes. PubMed: Uptake and accumulation of the herbicides chlorsulfuron and clopyralid in excised pea root tissue. PubMed: An evaluation of the role of ethylene in herbicidal injury induced by picloram or clopyralid in rapeseed and sunflower plants. PubMed: Teratologic evaluation of 3,6-Dichloropicolinic acid in rats and rabbits.