Fipronil
CAS NO.: 120068-37-3
Fipronil is a broad-spectrum insecticide that belongs to the phenylpyrazole chemical family. It disrupts the central nervous system of insects by blocking GABA-gated chloride channels and glutamate-gated chloride channels. This results in hyperexcitation of both nerves and muscles of contaminated insects.
Function
1. This agrochemical is useful against major lepidopteran and orthopteran pests on a wide range of field and horticultural crops and against coleopteran larvae in soils. It is also used for cockroach and ant control, including in the US. In addition, it is effective against pests of field corn, golf courses in commercial lawn care.
2. In the UK, provisional approval for five years has been granted for fipronil use as a public hygiene insecticide.
3. In New Zealand,the product has been used in a trial to control wasps which are a threat to indigenous biodiversity.
| Crop | Pests | Rate of Use | Application |
| Corn | Wireworm | 50-60 g/100kg seeds | Seed dressing |
| Corn | Grub | 50-60 g/100kg seeds | Seed dressing |
| Wood | Termite | 250 mg/kg | Soak |
| Indoor | Fly | 30 times | Spay |
| Indoor | Cockroach | 62.5 mg/square | Spay |
Benefit
1. Fipronil is a slow-acting poison. When used as bait, it allows the poisoned insect time to return to the colony or harborage. This agricultural chemical serves as a good bait toxin not only because of its slow action, but also because most, if not all, of the target insects do not find it offensive or repulsive.
Note
1. The farm chemical is highly toxic to fish and aquatic invertebrates.
2. It is toxic to bees and should not be applied to vegetation when bees are foraging.
3. The chemical for farming use has been found to be highly toxic to upland game birds, but is practically nontoxic to waterfowl and other bird species.
Technical Parameters
1. Fipronil 200g/L SC| Items | Specification | Method | |
| Appearance | White viscous liquid | N/A | |
| Purity, g/L | ≥200.0 | HPLC/GC | |
| Suspensibility, % | ≥85.0 | CIPAC MT 184 | |
| Fineness though 75μm sieve | ≥98.0 | CIPAC MT 185 | |
| PH Value | 6.0-9.0 | CIPAC MT 75.3 | |
| Persistent Foaming after 1min, ml | ≤25 | CIPAC MT 47.2 | |
| Pourability | Residue after Dumping, % | 5.0max. | CIPAC MT 148 |
| Testing Items | Standards | Method |
| Appearance | Light-yellow columnar granule | N/A |
| Purity, % | 80.0 ±2.5 | HPLC/GC |
| PH Value | 6.0 - 9.0 | CIPAC MT 75.3 |
| Suspending (%) ≥ | 70.0 | CIPAC MT 15.1 |
| Wetting Time (1min, ml) ≤ | 60.0 | CIPAC MT 53.3 |
| Water, % ≤ | 3.0 | Karl Fischer |
| Wet Sieve Test | Maximum 2.0% of the formulation shall be retained on a 75 µm test sieve. | CIPAC MT 185 |
| Storage Stability at 54℃ | Comply with above | CIPAC MT 46.3 |
| Degree of Dispersion (%) ≥ | 70.0 | CIPAC MT 174 |
| Testing Items | Standards | Method |
| Appearance | Red flowable liquid | N/A |
| Purity, g/L | 50.0 ±5.0 | HPLC/GC |
| PH Value | 4.0 - 7.0 | CIPAC MT 75.3 |
| Suspending (%) ≥ | 90.0 | CIPAC MT 15.1 |
| Water, % ≤ | 3.0 | Karl Fischer |
| Wet Sieve Test | Maximum 2.0% of the formulation shall be retained on a 75 µm test sieve. | CIPAC MT 185 |
| Storage Stability at 54℃ | Comply with above | CIPAC MT 46.3 |
| Particle Size Distribution (from 0.1μm to 4μm), % | ≥ 50.0 | CIPAC MT 187 |
| Shedding Rate, % | ≤10 | - |
