What dosage form is the soluble powder of traditional Chinese medicine?

A pesticide can be processed into many dosage forms. The common dosage forms are powder, granule, wettable powder, soluble powder, concentrated suspension and colloid, emulsifiable concentrate, seed coating agent, oil agent, slow-release agent and smoke agent. (1) powder (d). The powder is a very fine powder mixture, and 95% of the powder particles can pass through a 2-mesh sieve (the inner diameter of the sieve hole is 74um). The low-concentration powder mainly used for powder spraying can be directly sprayed, which is suitable for areas with difficult water sources; High concentration powder is used for seed dressing and preparation of toxic soil. Powder can't be used for spraying with water. 3.2 granules (g). Granular dosage form processed from raw materials, carriers and additives. It is a multi-specification, multi-form and multi-purpose dosage form derived and developed from powder. Granular agents are divided into fine particles, granules and large particles according to their particle size, and those with particle size larger than large particles are called blocky agents or pills. According to the disintegration of the carrier, granules that do not disperse in water are called non-disintegration granules, and granules that disperse in water are called disintegration granules. The effective components of non-disintegrating granules are gradually released from the carrier to exert their efficacy, and most of them appear as granules or granules, with many kinds of preparations and wide uses. Disintegrative granules, also known as water dispersible granules, mostly appear as large granules or granules. Mostly used for soil treatment. (3) Wettable powder (WP). Powdered dosage forms that are easily wetted by water and can be dispersed and suspended in water. It is made by mixing water-insoluble raw materials with wetting agent, dispersing agent and filler, and pulverizing. The agent can be diluted into a stable and well-dispersed suspension for spraying by adding water. Wettable powder plays an important role in pesticide formulation. Compared with emulsifiable concentrate, it does not use organic solvent and emulsifier. It also has some advantages of powder, such as low cost of packaging and transportation, and higher content of effective components than ordinary powder, which is more resistant to storage. In particular, herbicides and fungicides are mostly solid raw drugs, some of which are insoluble in water and organic solvents, which is not suitable for processing into emulsifiable concentrate, but suitable for processing into wettable powder. The efficacy of wettable powder is better than that of the same kind of powder. It can also be used for seed dressing, soil treatment, root irrigation, preparation of poisonous soil, poisonous bait and so on. (4) soluble powder (WS). The preparation looks like wettable powder, but the content of active ingredients is usually higher than that of wettable powder. For the same kind of medicine, when the content of active ingredients is the same, the efficacy of soluble powder is higher than that of wettable powder, and the packaging and transportation are equally convenient; Compared with emulsifiable concentrate, the efficacy is similar, but no organic solvent is needed, and the amount of additives is relatively small, which not only reduces the product cost, but also is relatively safe to the environment. The dosage form can be used after being diluted with water, and special attention should be paid to moisture-proof packaging and dry storage. (5) concentrated suspending agent. Solid technical drugs are dispersed and suspended in water medium or oil medium containing various additives, and can flow in high-concentration viscous dosage forms. Concentrated suspending agent with water as medium is often referred to as suspending agent for short; The concentrated suspension with oil as the medium is often referred to as oil suspension, which can be used for aircraft or ultra-low volume spraying. It has some advantages of emulsifiable concentrate and wettable powder, such as rain erosion resistance, non-flammability, and no phytotoxicity. Can be mixed with water in any proportion. (6) EC. An oily homogeneous liquid dosage form that can be dispersed into emulsion after entering water. The equipment used in the processing of EC is simple and the preparation technology is easy to master, that is, the original drug is dissolved in organic solvent, and then emulsifier is added, and the three are mutually soluble. The emulsifiable concentrate has high content of effective components, good storage stability, high efficacy and convenient use. The emulsifiable concentrate cannot be sprayed directly, so it is required to dilute the water into an emulsion with a certain concentration and spray it with a sprayer. Emulsifiable oil has many advantages, but the biggest disadvantage is that it consumes a lot of organic solvents, pollutes the environment, is flammable and unsafe. Therefore, other dosage forms containing no or less organic solvents are paid attention to, such as concentrated emulsion, suspending agent, aqueous solution and so on. (7) concentrated emulsifiable concentrate. It is an oil-in-water opaque emulsion liquid pesticide formulation. It is made of water-insoluble pesticide crude oil, emulsifier, dispersant, stabilizer, antifreeze and water through homogenization process, without or with little use of organic solvent. Compared with emulsifiable concentrate, this dosage form is characterized by taking water as the continuous phase and pesticide crude oil as the dispersed phase. Water can inhibit the volatilization of pesticide vapor, and its production cost is lower than that of emulsifiable concentrate. It has no danger of combustion and explosion, safe storage and transportation, and avoids the harm of organic solvents to the environment, people, livestock and crops. The concentrated emulsion can be directly used for aircraft or ground micro-spraying. You can also spray water constantly. (8) aqua. Aqueous solution dosage form of pesticide technical. The aqueous solution contains a small amount of surfactant. This is a true solution preparation in which the drug is dispersed in water in molecular or ionic state. The concentration depends on the solubility of the effective components of the pesticide, and the stability of the original drug in water is required. The use method is basically the same as that of the above concentrated emulsion. Specially used to treat seeds is called seed treatment agent. Used to control indoor sanitary pests, it is often processed into aromatic water. All water-soluble and water-stable raw materials can be processed into aqua. (9) Seed coating agent. Pesticide containing binder is coated on the outside of plant seeds and forms a solid drug layer. Seeds treated with it can often be stored for a period of time, so some seed companies sell it as commercial seeds. If seeds are dressed or soaked in conventional dosage forms, such as powder and emulsifiable concentrate, it is called seed treatment agent, which is usually sown with treatment. (1) oil agent. Oil solution dosage form of pesticide technical. This agent is specially designed for ultra-low volume spraying, also known as ultra-low volume spray. This dosage form generally contains 2% ~ 5% of pesticide active ingredients, and it can be sprayed directly without dilution. (11) Sustained release agent. A pesticide formulation that can control the slow release of pesticide active ingredients from processed products. Pesticides are stored in the processed products of pesticides by physical and chemical means, and then released in a controlled way. At present, some foreign sustained-release agents have been commercialized, and domestic research is being accelerated, mainly to explore the processing technology of sustained-release agents and study the relationship between release speed and environmental conditions. (12) Smoke agent. A pesticide formulation in which the active ingredients are suspended in the air in a smoke-like dispersion system after the mixture is ignited. When used by ignition, it can burn, but it should only smoke without flame. The effective components of pesticides are vaporized by heating, cooled in the air and condensed into extremely fine solid particles, which are deposited on the surface of plants. Fine smoke particles not only have good contact toxicity and stomach toxicity to pests, but also can enter the body through the respiratory tract of pests to cause toxicity. The use of smoke agent also has the advantages of high work efficiency and low labor intensity. To be in