China's pesticide formulations are mainly emulsifiable concentrates and wettable powders, and one is a suspending agent. I think everyone is not too familiar with them. Today, the Chinese pesticide net Xiaobian specifically introduces the main differences between the three dosage forms and how to choose pesticides. Our key products are litharge using in assaying of precious metal, and lead nitrate using in gold mining. Lead nitrate is used as medical astringent; tanning material for leather-making; dyeing mordant; photograph promoting agent; flotation for ore; chemical reagents; and also used for making fireworks, match, and other lead salts. In the mean time, we are sourcing the other chemical reagents for our mining customers in Australia, Canada, Africa etc. Mining Chemicals,Mining Chemicals Cationic Pam Flocculant,Copper Mining Chemicals,Blufloc Pam Mining Chemical Gemhold (SJZ) Trading Co., Ltd. , https://www.gemhold.cn
The efficacy of the pesticide's emulsifiable concentrate is significantly higher than that of the suspending agent and the wettable powder. The active ingredient of the same pesticide is preferably the emulsifiable concentrate.
The fungicide for foliar spray, generally in the form of oil as a medium, is not beneficial to the bactericidal action, so a suspending agent or a wettable powder should be selected. The herbicide for foliar spraying has a waxy layer on the surface of the weed leaves, and the emulsion containing the organic solvent, the concentrated emulsion, the suspending agent and the like can be selected. Herbicides , granules and other dosage forms that can be used in the preparation of toxic soils are used more frequently in paddy fields or soils.
As an alternative form of emulsifiable concentrate, the suspending agent is second to the emulsifiable concentrate, but is significantly higher than the WP, and contains various auxiliaries which facilitate the adhesion of the granules to the surface of the living body, thereby improving the efficacy. Compared with emulsifiable concentrates, thick emulsions and microemulsions do not use or use less organic solvents. They are safer to use and have better efficacy. However, the manufacturing cost is slightly higher and the price is slightly higher.
From the safety considerations of the application personnel, spraying in hot weather, oil-based emulsions are prone to poisoning, preferably using similar water-based dosage forms, such as wettable powders, suspoemulsions, soluble powders, water dispersion. Granules, etc.
According to the pesticide network , there is currently the same dosage form of the same active ingredient pesticide in China, but there are many different levels of preparations. Therefore, when purchasing, you should choose a high-content preparation, which is calculated from the dosage per unit area, thereby reducing the cost of use.
1. Product name:lead nitrate
2. Character: white crystal powder, relative density 4.53(20), easily soluble in water, liquid ammonia, light dissolve in ethyl alcohol, not dissolve in concentrated nitrate acid, solubility 56.5g/100g water (20). Dry lead nitrate decompose at 205-223. Damp lead nitrate decompose at 100, first become Pb(NO3)2 . PbO, go on heating, then become PbO. It is strong oxidant, putting together with organics will lead it burning, noxious.
3. Application: Used as flotation reagent for gold ore and other ore.