Glass reaction with

Characteristic odor. Inhalation causes severe breathing difficulties, which often do not begin imtil several hours after inhalation and persist for hours. Does not attack glass. Reaction with water is hardly noticeable. Attacks mercury. 

Carbodi-imide-mediated reaction with alkylamine glass reaction with diazotized arylamine glass glutaraldehyde cross-linking onto alkylamine glass... 

Glutaraldehyde-mediated reaction with amino-substituted glass reaction with agarose cyclic imidocarbonate... 

Reaction with dextran cyclic imido-carbonate reaction with glass reaction with 4-aminobenzylcellulose Adsorption onto tannin coupled to aminohexyl-cellulose Glutaraldehyde-mediated reaction with a silanized ferrite support Adsorption onto stretched nylon fibre Reaction with agarose cyclic imido-carbonate... 

Reaction with acylazide-activated collagen Hydrophobic interactions with cellulose esters and with phenoxyacetylated-dextran and other derivatives of glass Reaction with agarose cyclic imidocarbonate... 

The reaction with M = Y and A1 (the major elements of FeCr alloy) are highly favourable whereas those with Fe, Cr, and Ni are unfavourable. Hence, it could be concluded that the extent of glass reaction with alloys depends upon the nature of the alloys used and exposure conditions as well. 

Bromine. Slip the glass cover of a jar momentarily aside, add 2-3 ml. of bromine water, replace the cover and shake the contents of the jar vigorously. Note that the bromine is absorbed only very slowly, in marked contrast to the rapid absorption by ethylene. This slow reaction with bromine water is also in marked contrast to the action of chlorine water, which unites with acetylene with explosive violence. (Therefore do not attempt this test with chlorine or chlorine water.)... 

Diffusion of the molecular gases can be compHcated by reactions with the glass network, especially at the sites of stmctural defects. The diffusion coefficient of water, for example, shows a distinct break around 550°C (110). Above 550°C, the activation energy is approximately 80 kj /mol (19 kcal/mol), but below 550°C, it is only 40 kJ/mol (9.5 kcal/mol). Proposed explanations for the difference cite the fact that the reaction between water and the sihca network to form hydroxyls is not in equiUbrium at the lower temperatures. 

Chlorine and bromine add to benzene in the absence of oxygen and presence of light to yield hexachloro- [27154-44-5] and hexabromocyclohexane [30105-41-0] CgHgBr. Technical benzene hexachloride is produced by either batch or continuous methods at 15—25°C in glass reactors. Five stereoisomers are produced in the reaction and these are separated by fractional crystallization. The gamma isomer (BHC), which composes 12—14% of the reaction product, was formerly used as an insecticide. Benzene hexachloride [608-73-17, C HgCl, is converted into hexachlorobenzene [118-74-17, C Clg, upon reaction with ferric chloride in chlorobenzene solution. 

Other modifications of the polyamines include limited addition of alkylene oxide to yield the corresponding hydroxyalkyl derivatives (225) and cyanoethylation of DETA or TETA, usuaHy by reaction with acrylonitrile [107-13-1/, to give derivatives providing longer pot Hfe and better wetting of glass (226). Also included are ketimines, made by the reaction of EDA with acetone for example. These derivatives can also be hydrogenated, as in the case of the equimolar adducts of DETA and methyl isobutyl ketone [108-10-1] or methyl isoamyl ketone [110-12-3] (221 or used as is to provide moisture cure performance. Mannich bases prepared from a phenol, formaldehyde and a polyamine are also used, such as the hardener prepared from cresol, DETA, and formaldehyde (228). Other modifications of polyamines for use as epoxy hardeners include reaction with aldehydes (229), epoxidized fatty nitriles (230), aromatic monoisocyanates (231), or propylene sulfide [1072-43-1] (232). 

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