Quality of hydrazine hydrate | Wei Connaught Chemical (certified) | Shangqiu hydrazine hydrate by Wei Connaught Chemical Co., Ltd. Qingdao. Qingdao Wei Connaught Chemical Co. (www.qdweinuo.com) is specialized in the "phenol, aniline, ethylene, n-butanol, isobutanol, n-propanol, isopropanol, methanol," the business, the company adhering to the "integrity management, service intentions, "the idea, to provide you with the highest quality products and services. Welcome to inquire! Contact: Feng Zhongying. The gas dissolved in law: Any gas solubility in water and this gas in the air-water interface of partial pressure and water temperature related. Boiler feedwater oxygen commonly used methods are: thermal oxygen, vacuum oxygen desorption of oxygen, steel scrap and dosing oxygen, oxygen, etc. at room temperature filter sponge. Boiler feedwater oxygen? If yes, oxygen pressure and boiler pressure of hydrazine hydrate essentially no relationship ferrous sulfate or blue-green monoclinic crystalline particles. Odorless. Weathering in dry air. Surface oxidation in moist air into the basic ferric brown. At 56.6 ℃ become tetrahydrate hydrazine hydrate plant, at 65 ℃ when becoming monohydrate. Soluble in water, practically insoluble in ethanol. Cold aqueous solution was slowly oxidized in air, rapid oxidation when hot. Adding alkali or exposed light accelerated oxidation. Relative density (d15) 1.897. The median lethal dose (mice hydrazine hydrate orally) 1520mG / kG. Irritation. Anhydrous ferrous sulfate is a white powder, containing water of crystallization is light green crystals, crystal commonly known as "copperas", dissolved in water solution as a light green. For chromatography reagents. Determination drip platinum, selenium, nitrite and nitrate. Reductant. Manufacturing ferrite. Clean water. Polymerization catalyst. Photographic plate. Restore the principle of ferrous sulfate, ferrous sulfate is used as a large number of reductant, mainly the reduction of chromate in cement. Containing hexavalent chromium reduction method commonly used wastewater processing. Principle: Under acidic conditions, the reduction of hydrazine hydrate offer, adding ferrous sulfate reducing agent, sodium sulfite, sodium bisulfite, sulfur dioxide and other hexavalent chromium to trivalent chromium, and then adding sodium hydroxide, calcium hydroxide, lime such as adjusting the pH to generate trivalent chromium hydroxide precipitate is separated from the wastewater. In this reaction, hydrazine monohydrate industry, the oxidizing agent is Cl2, the reducing agent is Cl2, the present reaction is a disproportionation reaction. [3]