摘要:
A chemical sensor including a substrate having at least two faces, at least one of the faces being covered by a thin film that includes a sensitive material, and a means for measuring a change in a physical property of the sensitive material; and, methods of detecting the presence of a nitro compound with the chemical sensor.
摘要:
The invention relates to chemical sensors comprising aniline-grafted polysiloxanes as sensitive materials, and to the use thereof for detecting or assaying nitro compounds, in particular nitroaromatic compounds. Fields of application detecting explosives, checking and monitoring atmospheric pollution and the quality of the ambient air in relatively confined spaces, monitoring of industrial sites.
摘要:
A method for synthesizing 3,5-dichloroanisole from 1,3,5-trichloro-benzene is proved. The method may comprises: a) the reaction between 1,3,5-trichloro-benzene and a methanolate of an alkaline or alkaline-earth metal in a first solvent chosen from among dimethylsulfoxide and 1,1,3,3-tétramethylurea, b) the precipitation of the product resulting from step a) in a second solvent which is not included among substances considered carcinogenic, mutagenic and/or toxic for reproduction by Regulation (EC) no 1272/2008 of the European Parliament and of the Council of 16 Dec. 2008, then c) the recovery of the precipitate thus obtained. The method may be applied to synthesize 1,3,5-triamino-2,4,6-trinitrobenzene in which 3,5-dichloroanisole is an intermediate product.
摘要:
The invention relates to a method for synthesizing 3,5-dichloroanisole from 1,3,5-trichlorobenzene, which comprises:a) the reaction between 1,3,5-trichlorobenzene and a methanolate of an alkaline or alkaline-earth metal in a first solvent chosen from among dimethylsulfoxide and 1,1,3,3-tetramethylurea;b) the precipitation of the product resulting from step a) in a second solvent which is not included among substances considered carcinogenic, mutagenic and/or toxic for reproduction by Regulation (EC) n° 1272/2008 of the European Parliament and of the Council of 16 Dec. 2008; thenc) the recovery of the precipitate thus obtained.Application: synthesis of 1,3,5-triamino-2,4,6-trinitrobenzene of which 3,5-dichloroanisole is an intermediate product.