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211, Catalytic synthesis of ketal by urushiol - formaldehyde neodymium polymer from cyclohexanone and ethanediol was studied.

212, A new method - dynamics photometric method was developed to measure trace formaldehyde in beer.

213, The free formaldehyde of the urea formaldehyde resin adhesive agent is the main pollution source of artificial board.

214, Practice results indicated that the content of formaldehyde in resin binder can be controlled less than1.8%and the mechanical properties completely satisfied the requirement of production.

215, Concerned expert has considered to want " E0 " the mark of the grade of formaldehyde set limit to that class regards aggrandizement wood as the floor, in bringing into level of new castigatory state.

216, Methanol dehydrogenation is a promising route for commercial production of anhydrous formaldehyde.

217, Shell molding of phenol formaldehyde resin coated sand has been widely used in foundry and with prospective future.

218, Bakelite resin which is produced by reacting phenol with formaldehyde is used to bind wood fibres in pressed wood such as medium-density fibreboard (MDF) and formica.

219, Formaldehyde 8 hydroxyquinoline sodium benzene sulfonate resorcinol copolymer described as chelating ion exchange resin was synthesized.

220, A dynamic chamber technique was employed to investigate the effects of formaldehyde concentration(sentencedict.com), light intensity and flow rate on formaldehyde purification from air by potted spider plant.

221, To study the subchronic toxicity of formaldehyde by inhalation in rats.

222, Leo Baekeland increased the amounts of formaldehyde and carbolic acid in the beaker and turned the flame higher than usual.

223, Formaldehyde is a carcinogen that has been shown to cause cancer in lab animals.

224, Its major uses are for organic synthesis, especially of formaldehyde, as an automotive antifreeze, as a solvent for cellulosics and natural resins, and as the principal denaturant for ethyl alcohol.

225, Color reaction with acetylacetone is used to determine the formaldehyde content in fabrics.

226, A method of preparing trimethylolethane from formaldehyde and propionic aldehyde in water was introduced in the presence of the base through cross Cannizzero reaction.

227, Effects of reaction condition in urea-formaldehyde resin production, especially during the acid stage, on the formaldehyde emission were discussed.

228, Sodium formaldehyde sulfoxylate in foods were tested by direct distillation - titration coupled with AHMT spectrophotometer.

229, Consequently , the study of low cost and low content of free formaldehyde and free phenol PF resin adhesives in production and use are pressingly required.

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230, As a polymer crosslinker, water soluble phenol - formaldehyde resin is widely applied in plugging oil reservoir.

231, A thermosetting resin made by a condensation reaction of a melamine derivative, trimethylolmelamine, C3N3(NHCH2OH)3, with formaldehyde.

232, Main types of indoor air pollution for formaldehyde, benzene caused by chemical pollution, biological pollution caused by bacteria and viruses radioelement and dust caused by the physical pollution.

233, The content of formaldehyde(HCHO)is an important assessed value in the state compulsory standard GB18401-2003. Therefore, inspecting accurately the HCHO content in textiles is very important.

234, OBJECTIVE To determine the constants of oxidation reaction rate between sodium formaldehyde sulfoxylate and oxygen in aqueous solutions.

235, Necowood interior wallboard is environment friendly, and without formaldehyde. Suitable for lobby, muti-functional room, club house and different kinds of resident background application.

236, As a result, Phenylhydrazine hydrochloride method was preferable detecting method for formaldehyde at present. This method could be selected by their characteristics.

237, The use of "formaldehyde sulfoxylate" can improve the appearance and taste of food. fans into formaldehyde sulfoxylate can make it tough, Smoothness and delicious, not white.

238, The processing technology of electroless copper plating on graphite powders by iron powder method and formaldehyde method were studied and evaluated.

239, To testify the liability of rapid determination box in determining formaldehyde in aquatic products and lixivium.

240, Cypermethrin microcapsules with urea - formaldehyde resin wall were prepared by in - situ polymerization process in aqueous medium.