Detail of "1702-17-6"

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CAS Number:
1702-17-6
Name:
2-Pyridinecarboxylicacid, 3,6-dichloro-
Superlist Name:
Clopyralid
Molecular Structure:
Formula:
C₆H₃Cl₂NO₂
Molecular Weight:
192.00
Synonyms:
Picolinicacid, 3,6-dichloro- (7CI,8CI);3,6-Dichloro-2-pyridinecarboxylic acid;3,6-Dichloropicolinic acid;Cirtoxin;Dichloro pyridine acid;Dowco 290;IWD 3523;Lontrel;Lontrel 100;Lontrel 300;Lontrel L;Matrigon;Transline;Versatill;
EINECS:
216-935-4
Density:
1.612 g/cm³
Melting Point:
151-152 °C
Boiling Point:
323.718 °C at 760 mmHg
Flash Point:
149.579 °C
Solubility:
1.0 g/L in water
Appearance:
white crystalline solid
Hazard Symbols:
Xi,N
Risk Codes:
41-51/53
Safety:
26-30-61-39 Details
Transport Information:
UN 3077

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Reference

Fate of 3,6-dichloropicolinic acid in soils: Fate of 3,6-dichloropicolinic acid in soils. Pik, Andrew J.; Peake, Eric; Strosher, Melvin T.; Hodgson, Gordon W. (Environ. Sci. Cent., Univ. Calgary, Calgary, Alberta, Can.). J. Agric. Food Chem., 25(5), 1054-61 (English) 1977. CODEN: JAFCAU. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemicals) The fate of the herbicide 3,6-dicloropicolinic acid (I) [1702-17-6] was detd. in 3 alk. soils (a black chernozem, brown chernozem, and an ortho eutric brunisol) in Alberta, Canada. The herbicide was degraded mainly by microbial means. Degrn. rates were fastest in moist soils (t1/2 approx. 2 months) and were inversely related to the org. C of the soil. The rate of degrdn. was greatly decreased during both dry and cold periods. Furthermore, after having been in the soil over a winter period, the herbicide gave degrdn. rates that were further greatly retarded. Thus, although 35% of I degraded during the first summer period (the first 3 months after application), only a further 31% degraded during the following 12 months. The extent of leaching of the herbicide was also inversely related to the org. C of the soil, being most pronounced in the brown chernozem and brunisol soils. Predictions for depth of leaching under field conditions, based on a chromatog. model for leaching, were reasonably related o the org. C of the soil, thus explaining the relative order of leaching obsd. Adsorption distribution coeffs. (Kd) were obtained by 2 independent methods-column leaching and batch-type equil. of a 1:1 soil/soln. slurry-the latter yielding the lower values of 0.12, 0.01, and 0.05 .mu.g I/g of soil for the black chernozem, brown chernozem, and brunisol, resp.

Influence of clopyralid (Lontrel 100) on microbial activities in soil under laboratory conditions: Influence of clopyralid (Lontrel 100) on microbial activities in soil under laboratory conditions. Malkomes, H. P.; Wagner, Katrin (Inst. Unkrautforsch., Biol. Bundesanst. Land- Forstwirtsch., Braunschweig D-3300, Fed. Rep. Ger.). Zentralbl. Mikrobiol., 141(8), 603-14 (German) 1986. CODEN: ZEMIDI. 9035-82-9 and 9004-34-6 which are cas registry numbers are also used here. ISSN: 0232-4393. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Section cross-reference(s): 19 The herbicide clopyralid (I) [1702-17-6] was mixed into 2 soils which were incubated ￡16 wk. Field dosage (1.2 L/ha) was used or 10-fold or 0.5-fold of the dose. Soil dehydrogenase [9035-82-9] activity in most cases was inhibited by increasing I dosages. In loamy sand a stimulation occurred after 1 wk. The N mineralization was stimulated in loamy sand with lucerne meal after 1 wk with increased herbicide dosage, showing a short-term accumulation of NH3. Long-term respiration (cumulative CO2 formation) was stimulated in loamy sand without lucerne meal by I, whereas in the silty loam this was obsd. only with lucerne meal. The reduced I dosage caused a strong increase in respiration of the silty loam without lucerne meal. While cellulose decompn. was hardly changed, straw decompn. was slightly reduced by I. .

Detail of "1702-17-6"

2-Pyridinecarboxylicacid, 3,6-dichloro-

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