- Fosamine ammonium
-
-
2026-09-17
- CAS:25954-13-6
- Min. Order: 1KG
- Purity: 98.0%
- Supply Ability: 1000kg/month
|
| | Fosamine ammonium Basic information |
| | Fosamine ammonium Chemical Properties |
| Melting point | 175 °C | | density | 1.33 g/cm3 | | color | Crystals | | Henry's Law Constant | 2.0×107 mol/(m3Pa) at 25℃, HSDB (2015) | | EPA Substance Registry System | Fosamine-ammonium (25954-13-6) |
| Hazard Codes | Xi | | Risk Statements | 36 | | Safety Statements | 26 | | RTECS | BQ4112000 | | Hazardous Substances Data | 25954-13-6(Hazardous Substances Data) | | Toxicity | LC50 (96-hour) for bluegill sunsh 0.67 g/L, rainbow trout and fathead minnows >1 g/L (Hartley and Kidd, 1987); acute oral LD50 for rats 24.4 g/kg (Ashton and Monaco, 1991). |
| | Fosamine ammonium Usage And Synthesis |
| Chemical Properties | Pure product is white crystalline solid, slightly minty aroma. m.p. 175°C, relative density 1.33, vapor pressure 5.33×10-4Pa (25°C). Solubility is 15.8% in methanol, 1.2% in ethanol, 0.14% in xylene amide, 0.04% in benzene, 0.03% in acetone, 0.02% in n-hexane, 0.004% in chloroform and 179% in water. It can be decomposed by acid, strong alkali and calcium, magnesium salts, decompose above 80℃ and release ammonia, half-life in soil is about 7d, slightly corrosive to brass. | | Uses | FOSAMINE AMMONIUM used to control many woody and brush species on noncrop land | | Production Methods | Commercial literature does not give step by step manufacturing detail for fosamine ammonium, but its production can be reliably summarised from structure. Industrial processes would typically synthesise the phosphonic acid backbone first, by reacting a suitable phosphite with an isocyanate or carbamoylating agent to form the carbamoylphosphonic acid ethyl ester. This intermediate is then neutralised with ammonia under controlled pH and temperature to yield the highly water soluble ammonium salt. | | Mechanism of action | Slight systemic activity, contact action. Acts by preventing dormant tissues from becoming active and growing again. | | Safety Profile | Mildly toxic by ingestion andinhalation. When heated todecomposition it emits very toxic fumes of NOx, POx, andNH3. | | Environmental Fate | Soil. Fosamine is rapidly degraded to carbon dioxide by microorganisms in soil (Humburg et al., 1989). The reported half-life in soil is approximately 7 to 10 days (Hartley and Kidd, 1987; Worthing and Hance, 1991).
Plant. After a 2.5% application to multiora rose plant leaves, 19, 21, 22, and 43% of the applied amount was absorbed after 1, 4, 8, 16 and 32 days, respectively (Mann et al., 1986). Degrades rapidly in plants with a half-life of 2 to 3 weeks (H
Chemical/Physical. Fosamine-ammonium is stable as a dilute solution but decomposes in weak acidic media (Worthing and Hance, 1991), probably forming water-soluble salts. | | Pesticide Type | Herbicide; Plant Growth Regulator |
| | Fosamine ammonium Preparation Products And Raw materials |
|