{"id":{"repo_id":"colostate","oai_identifier":"oai:mountainscholar.org:10217/234358"},"canonical_url":"https://search.dev.ndltd.org/etd/colostate/oai:mountainscholar.org:10217/234358","repository":{"repo_id":"colostate","name":"Colorado State University","base_url":"https://api.mountainscholar.org/server/oai/request"},"display":{"title":"Determination of the water solubility of the fungicide chlorothalonil","abstract":"A UV-Visible spectrophotometric analytical procedure was developed and used to measure the water solubility of chlorothalonil at temperatures ranging from 8.5 to 37.5 °C. The effect of formulation chemicals present in BRAVO®500, a pesticide formulation containing chlorothalonil, on the apparent water solubility of chlorothalonil was also assessed. The water solubility was measured using a generator column technique while the apparent solubility enhancement of chlorothalonil by formulation chemicals in diluted formulation was evaluated by both generator column and batch shake techniques. A water solubility of 0.492 to 1.85 mg/L was found for a temperature range of 8.5 to 37.5 °C. The enthalpy of solution was found to be 7.96 kcal/mole. The apparent solubility enhancement due to formulation chemicals in dilute BRAVO®500 solution was 0.942 mg/L at 23 °C, which yielded a log Kdoc of 4.24. Based upon these results and typical formulation application rates, it is unlikely that the formulation chemicals present in the BRAVO® 500 formulation would increase the mobility of chlorothalonil in the environment.","abstract_html":"A UV-Visible spectrophotometric analytical procedure was developed and used to measure the water solubility of chlorothalonil at temperatures ranging from 8.5 to 37.5 °C. The effect of formulation chemicals present in BRAVO®500, a pesticide formulation containing chlorothalonil, on the apparent water solubility of chlorothalonil was also assessed. The water solubility was measured using a generator column technique while the apparent solubility enhancement of chlorothalonil by formulation chemicals in diluted formulation was evaluated by both generator column and batch shake techniques. A water solubility of 0.492 to 1.85 mg/L was found for a temperature range of 8.5 to 37.5 °C. The enthalpy of solution was found to be 7.96 kcal/mole. The apparent solubility enhancement due to formulation chemicals in dilute BRAVO®500 solution was 0.942 mg/L at 23 °C, which yielded a log Kdoc of 4.24. Based upon these results and typical formulation application rates, it is unlikely that the formulation chemicals present in the BRAVO® 500 formulation would increase the mobility of chlorothalonil in the environment.","abstract_has_math":false,"creators":["Hatheway, James L., Jr., author","Walters, Richard, advisor","Sanders, Tom, committee member","Ward, Robert, committee member"],"institution":"Colorado State University. Libraries","degree_name":"Master of Science (M.S.)","degree_level":"Masters","degree_discipline":"Civil Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1994,"date_issued":"1994","date_published":"1994","updated_at":"2026-07-27T19:13:14Z","subjects":["Fungicides -- Solubility","Fungicides -- Environmental aspects"],"languages":["eng","English"],"rights":["Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. 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The water solubility was measured using a generator column technique while the apparent solubility enhancement of chlorothalonil by formulation chemicals in diluted formulation was evaluated by both generator column and batch shake techniques. A water solubility of 0.492 to 1.85 mg/L was found for a temperature range of 8.5 to 37.5 °C. The enthalpy of solution was found to be 7.96 kcal/mole. The apparent solubility enhancement due to formulation chemicals in dilute BRAVO®500 solution was 0.942 mg/L at 23 °C, which yielded a log Kdoc of 4.24. Based upon these results and typical formulation application rates, it is unlikely that the formulation chemicals present in the BRAVO® 500 formulation would increase the mobility of chlorothalonil in the environment."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["masters theses"]},{"key":"dc:title","label":"Title","values":["Determination of the water solubility of the fungicide chlorothalonil"]}]}],"canonical_facts":{"dc:creator":["Hatheway, James L., Jr., author","Walters, Richard, advisor","Sanders, Tom, committee member","Ward, Robert, committee member"],"dc:date.accessioned":["2022-02-04T19:19:10Z"],"dc:date.available":["2022-02-04T19:19:10Z"],"dc:date.issued":["1994"],"dc:description.abstract":["A UV-Visible spectrophotometric analytical procedure was developed and used to measure the water solubility of chlorothalonil at temperatures ranging from 8.5 to 37.5 °C. The effect of formulation chemicals present in BRAVO®500, a pesticide formulation containing chlorothalonil, on the apparent water solubility of chlorothalonil was also assessed. The water solubility was measured using a generator column technique while the apparent solubility enhancement of chlorothalonil by formulation chemicals in diluted formulation was evaluated by both generator column and batch shake techniques. A water solubility of 0.492 to 1.85 mg/L was found for a temperature range of 8.5 to 37.5 °C. The enthalpy of solution was found to be 7.96 kcal/mole. The apparent solubility enhancement due to formulation chemicals in dilute BRAVO®500 solution was 0.942 mg/L at 23 °C, which yielded a log Kdoc of 4.24. Based upon these results and typical formulation application rates, it is unlikely that the formulation chemicals present in the BRAVO® 500 formulation would increase the mobility of chlorothalonil in the environment."],"dc:format.medium":["masters theses"],"dc:identifier.uri":["https://hdl.handle.net/10217/234358","https://doi.org/10.25675/3.024698"],"dc:language":["English"],"dc:language.iso":["eng"],"dc:publisher":["Colorado State University. Libraries"],"dc:relation":["Catalog record number (MMS ID): 991023669569703361","SB951.3.H37 1994"],"dc:rights":["Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. 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