Emergency chemically hazardous substances
Chemical hazards and toxic substances pose a wide range of health hazards (such as irritation, sensitization, and carcinogenicity) and physical hazards (such as flammability, corrosion, and explosibility). Explosives. Gases. Flammable liquids, solids.
Подобные документы
Research transparent conducting n-type semiconductor zinc oxide films, which have been extensively studied in recent year because they exhibit wide band gap. Analysis of scanning electron microscopy which used for study of surface morphological changes.
статья, добавлен 30.07.2016Studies on interactions of nanomaterials with components of biosystems, development of new medicines based on magnetite, their application efficiency, chemical engineering of multilevel magnetosensitive nanocomposites with a hierarchical architecture.
статья, добавлен 02.04.2014The chemical structure of the polymer latexes. The influence of surfactants on the drip solution. The mechanism of anionic with a negative charge in the screed, acting as air entrainment. Hydrogen bonding, water absorption and compressive strength.
статья, добавлен 22.02.2015The study of physico-chemical properties of modified forms of natural biopolymers – carboxymethyl cellulose and xanthan gums, their ability to film formation water-soluble polymeric compositions and the influence on growth and productivity of crops.
статья, добавлен 23.02.2016- 80. Calcium
There are notable characteristics, occurrence, applications (compounds, H and K lines), history, compounds, isotopes, nutrition (dietary calcium supplements, prevention of fractures due to osteoporosis, possible cancer prevention, overdose) about calcium.
реферат, добавлен 13.11.2009 Analysis of application of natural gas purification technology with diethanolamine to study the efficiency of the absorption process, which has wide practical application. Determination of optimal conditions for different composition of the source gas.
статья, добавлен 06.05.2018Synthesis of block copolymers via the polymerization of methyl methacrylate initiated by Ce4 - PEG system using a functional peroxidecontaining the services of an agent. Rheological and colloidal-chemical characteristics of new polyampholitic surfactant.
статья, добавлен 23.02.2016Drugs based on the 1,2,4-triazole have a wide spectrum of biological activities. They are effective cardioprotectors, hepatoprotectors, anti-oxidants. Compounds with strong diuretic activity have been found among the newly synthesized compounds.
статья, добавлен 13.01.2017Brief biographical information about the life of F. Haber - a German chemist and Nobel laureate. Investigation the reaction of nitrogen with hydrogen, which produces ammonia. The essence of Le Chatelier's Principle. The main function of the catalyst.
реферат, добавлен 04.02.2015- 85. Сhemical Bonds
The chemical bonds formed by the interaction of electrons. Compound atoms in the molecule. Filled valence shell. The orbital space around the nucleus. The relationship between hydrogen atoms. Interaction of alkali or alkaline earth metals with halogens.
презентация, добавлен 22.02.2015 Testing scheme of the synthesis of ester atsalamov acids and subsequent cyclization of the intermediate 3-hydrazinopyridazine-2-ones with carbonyl-containing compounds to provide chemical diversity of the final products containing a practical substitute.
статья, добавлен 20.03.2016Construction of isothermal section of the phase diagram of the Y–Cu–Sn ternary system at 673 K in the whole concentration range, using X-ray diffraction and EPM analyses. Calculations of crystallographic parameters and theoretical diffraction patterns.
статья, добавлен 23.02.2017The carotenoid nature of the glycoside is protocrocin. Study of the dependence of the chemical composition of a saffron product on its growing season, time of collection, storage and processing. Accumulation of protocrokin and its transformation.
статья, добавлен 27.02.2021Discusses the amorphous materials in terms of absorption of electromagnetic infrared radiation as the integral characteristic of a photoelectric converter. The spectrum obtained experimentally was shown with the consideration of the main absorption peak.
статья, добавлен 30.07.2016Changes of structural and power parameters of molecules of Laevomycetinum, conditioned by adsorption. Descriptors of biological activity of Laevomycetinum are energy of НВМО and length sanctify O hydrogen - H.O in the propanediol fragment of molecule.
автореферат, добавлен 02.04.2014Investigation of optical absorption spectra of YAG: Cr, Mg, and GGG: Cr, Mg films during high-temperature annealing in oxidation and reduction atmospheres. Factors to increase in absorption in the visible region, the charge exchange of chromium ions.
статья, добавлен 29.09.2016Carboxymethyl cellulose as the one of largest and most widely used ether. Creating a uniform distribution of reagents in the area of chemical reactions - the process which underlying the modeling of macrokinetics carboxymethylation of cellulose.
статья, добавлен 05.12.2018Mathematical modelling of diffraction by spiral nanotubes of arbitrary chemical composition, whose structure is described by Bravais cells. The intensity distribution in the layer plane and along the line layer in the case of electronic microdiffraction.
статья, добавлен 23.02.2016SiO2 materials containing different magnetic fillers are obtained by the sol-gel method. It is studied the weakening of electromagnetic radiation in the frequency range 8–11.5 GHz by the materials obtained with the use of panoramic attenuation measurers.
статья, добавлен 02.04.2014Experimental study results on the conditions of KDP single crystal growing doped by organic luminophors have been presented. Shows a possible coherent conjugation scheme for crystal-chemical parameters of KDP lattice with some organic luminophors.
статья, добавлен 24.03.2014Synthesis of a methacrylic azomonomers based on para-aminoacetanilide to obtain functionalized polymers for orientation of liquid crystals. The kinetics of polymerization of synthesized azomonomers. Constants of thermo-induced radical polymerization.
статья, добавлен 21.12.2016Study matter and change and the types of systems. Studying the molecules of life by organic chemistry. Identification and quantification of materials in a mixture in analytical chemistry. Chemical principles underlying basic biological systems.
эссе, добавлен 22.11.2015Shannon’s entropy and Weighted entropy. Weighted entropy and it’s applications. Ranking chemicals in quantitative High Throughput Screening. The studies of weighted entropy. Weighted entropy in Bayesian problem, as a measure of an investment risk.
магистерская работа, добавлен 30.08.2016Change of palladium ions concentration during cementation on the magnesium disk in dimethylformamide solution. Chemical microparticles and agglomerates anorganic chlorine compound. Palladium adhesion to the substrate surface in dimethylformamide.
статья, добавлен 23.02.2016Film materials with ion-exchange properties based on polymer obtained by condensation of oligoepichlorohydrin epoxide and piperazine with chemical modification. Compounds that have different thermodynamic affinities with the polymer and with each other.
статья, добавлен 30.10.2016