Carzol | formetanate | pH 9.0 | ½ life = 3 hours | (7) |
| | pH 7.0 | = 14 hours | |
| | pH 5.0 | = 4 days | |
Counter | terbufos | | Subject to hydrolysis under alkaline conditions | (9) |
Cygon | dimethoate | pH 6.0 | ½ life = 12 Hours. | |
| | | Unstable in alkaline water. | (7) |
Diazinon | diazinon | pH 8.0 | ½ life = 8 weeks | (8) |
| | 7.0 | ½ life = 10 weeks | |
| | 6.0 | ½ life = 8 weeks | |
| | 5.0 | ½ life = 2 weeks | |
Dimecron | Phosphamidon | pH 10.0 | ½ life = 30 hours | (7) |
| | 7.0 | ½ life = 13.5 days | |
| | 4.0 | ½ life = 74 days | |
Dursban | chlorpyrifos | pH 8.0 | ½ life =1.5 days | (8) |
Lorsban | | 7.0 | ½ life = 35 days (5 weeks) | |
Dylox | trichlorfon | | Degrades rapidly (approx. 99% of applied | (9) |
Proxol | trichlorfon | | degraded in 2 hrs) in alkaline pond water (pH | |
Dipterex | trichlorfon | | 8.5) at room temperature. | |
Furadan | carbofuran | | Unstable under alkaline conditions. | (9) |
Guthion | azinphosmethyl | pH 9.0 | ½ life = 12 hours | (8) |
| | 7.0 | ½ life = 10 days | |
| | 5.0 | ½ life =17.3 days | |
Imidan | phosmet | pH 8.3 | ½ life = less than 4 hours | (8) |
| | 7.0 | ½ life = less than 12 hours | |
(Notice temperature effect | | 7.4 | ½ life = 7.1 hrs @ 68° F. | |
on degradation rate) | | 7.4 | ½ life = 1.1 hrs. @ 100° F. | |
| | 4.5 | ½ life = 13 days | |
Malathion | malathion | | Stable at pH 5.0-7.0 but rapid hydrolysis | (4) |
| | | in more acidic or alkaline solutions | |
Sevin | carbaryl | pH 9.0 | ½ life = 1 day | (8) |
| | 8.0 | ½ life = 2.5 days | |
| | 7.0 | ½ life = 24 days | |
Systox | demeton | pH 6.0 | ½ life = 18 hrs. | (4) |
Captan | captan | pH 8.2 | ½ life = 10 minutes | (8) |
| | 7.1 | ½ life = 3 hours | |
(Notice degradation rates | | 5.2 | ½ life = 10 hours | |
above and below pH 5.2) | | 4.0 | ½ life = 4 hours | (4) |
Difolitan | captafol | | Decomposes rapidly above 9.0. | (9) |
Dyrene | anilazine | | Subject to hydrolysis | (9) |
Polyram | polyram | Data | Unstable under strongly acidic or | (4) |
| | | alkaline conditions | |