过硼酸钠的英文简介

过硼酸钠的英文简介 过硼酸钠 中文名称: 过硼酸钠 英文名称: sodium perborate 英文名称2: sodium peroxyborate 10486-00-7 molecular formular: NaBO3?4H2O molecular weight: 153.88 bases content:?96.0%。 melting point 63?C boiling point 130,150(-H2O) appearance: white monoclinic system particle or powder. dissolubility: soluble in acid, alkali and glycerol. Just a little in water PH value 10,11 stability: water solution is not stable , is very easy to give off active oxygen. However, sodium perborate which has a high purity is so stable in cold and dry air. It discomposes in 40?C or moist air and give off oxygen. It can solute in self-crystal water , resolve and and form into stick solid lump in 63 ?C It loses 3 crystal water and form into one-water monohydrate over 70? It is Soluble in the condition of high temperature and free alkali. Giving off hydrogen peroxide in react with diluted acid. Giving off oxygen and ozone. It is also easy discomposed by catalysis of other substance like lead oxide,manganese dioxide,potassium permanganate sliver nitrate, copper oxide cobalt oxide and platinum black and so on. Solubility :slight soluble in water. 1.93% sodium perborate can solute in water in 15?C. It has endothermic reaction in solution and the water solution is alklinity. Discomposed in 40 ?C and released oxygen. Main application : oxidizer、bleachers,fungicide deodorant、addition in detergent. And so on. bleaching:sodium perborate has a powerful ability of bleaching, but no harm for fibre, is suitable for bleaching of protein fibre as wool, silk,macrofiber and high- ranking cotton. disinfecting:it is used as disinfectant and fungicide reagent:it is also used as dye mordant, detergent builder,deodorant,addition of electroplate liquid,analytical reagent,polymerizer of organic systhesis, toothpaste and cosmetic. principle: it can give off nascent oxygen and has the function of bleaching but no harm for fiber. health hazard: it has a heavy thrill to mucosa of the upper respiratory tract. It corrodes digestive tract and lead to haemorrhage of the stomach and intestine if it is took in mouth. The product has thrill and corrosivity to eye and skin. It can cause inappetence. Lossing weight,vomiting, anemia and so on. enviroment harm: it is harmful for environment and it has pollution to water. it is helpful for combusting and has thrill. It is easy to discompose in the condition of humidity. Method of syntheses:after dissolving the solid NaOH in chemical syntheses,mix it with borax, and adjust thesolution concentration into 26 be in concentrated mother liquid, filter to remove the insoluble substance, and then, we get the sodium metabolic acid. Put them into reactor, add stablilizer agent of magnesium silicate after adjusting a proper concentration in mother liquor. Add hydrogen peroxide and control the rate of flow, react under the temperature of 35?。After reaction, cool to crystallize, centrifuge to separate, dry, and then attain a full-product named sodium perborate. Protection from toxicity: the people will be sore-throat, coughing, vomiting, purging. Losing consciousness, congestion of skin and eyes conjunctiva and symptom of pain after touching sodium perborate. Therefore, the people must pay attention to protect from it, protect from dispersion of dust and wear protective equipment. Don't have food, water or cigarette in work-time. Get away from locale, put off the cloth contaminated, wash body and send to hospital necessarily when somebody is contaminated by it. Clean leak-out substance in wearing filter-mood protective mask when leaking out and also wash again. Packaging for storage and transportation Pack in polyethylene plastic bag which has too- layer lining or wooden cask. Net weight is 25 kg or 50 kg per bag or bucket. The people must have a clean mask of" oxidant". It is belong to second-rank inorganic oxidant .danger rule No: 23027. It should be keep in a dry, cleaning, ventilated storeroom and the relative tempreture must be under 75%. It is easy resolve in moist and heat. The container must be sealed and avoid solarization in preventing from blocking and resolving.it Must not be stored or transported with other organic substance. Use water, sandy soil and carbon dioxide fire extinguisher to extinguish.