Ammonium concrete

Precaution Flamm. explosive when heated/shocked reacts with metals (Cu, Pb, Zn), Ca, ammonium, concrete and bases to form highly explosive/shock-sensitive picrate salts incompat. with oxidizable substances, reducing agents, heavy metals/salts, etc. Hazardous Decomp. Prods. Toxic fumes of CO, CO2, NOx on decomp., emits highly toxic fumes and can explode emits toxic fumes underfire conditions... 

Abdelrazig, B. E. I. Sharp, J. H. (1988). Phase changes on heating ammonium magnesium phosphate hydrates. Thermochimica Acta, 129, 197-215. Abdelrazig, B. E. I., Sharp, J. H. El-Jazairi, B. (1988). The chemical composition of mortars made from magnesia-phosphate cement. Cement Concrete Research, 18, 415-25. 

Sugama, T. Kukacka, L. E. (1983b). Characteristics of magnesium polyphosphate cements derived from ammonium polyphosphate solutions. Cement Concrete Research, 13, 499-506. 

Use Dispersing agent in concrete and carbon black-rubber mixes, extender for tanning agents, oil-well drilling mud additives, ore flotation agents, production of vanillin, industrial cleaners, gypsum slurried, dyestuffs, pesticide formulations. Commercially available as the salts of most metals and of ammonium. 

For the ion chromatographic analysis of chloride in cement, that cancels out the passivation of steel surfaces in concrete and, thus, is only admitted up to a maximum content of 0.1%, Maurer et al. [93] developed a procedure in which the cement sample is extracted with nitric acid. Since a direct chloride determination is impossible due to the high nitrate concentration in the extract, silver nitrate is added in three-fold excess to the nitric acid extract. The precipitated silver chloride is filtered off and subsequently dissolved in 100 mL of a 0.25% ammonium hydroxide solution. This solution, according to the chloride concentration, can be further diluted with de-ionized water or injected directly. 

For the first time, we have succeeded in preparing a vulcanized waterborne protective crack-resistant coating—based on CSPE for concrete and other substrates—that has better corrosion, crack, gas, and water resistance. These properties have been achieved by the application of a waterborne vulcanizate, which has never been used before. For this purpose, compounds such as Mannich alkalis (MAs) were applied, which cause the formation of quaternary ammonium bonds in a vulcanized net of the saturated elastomer and have reactive functional groups. 

When ammonia is found in biological materials at physiological pH (7.2), most of it (99%) will be found as ammonium ion, due to its pK of 9.2. This is an important consideration for any subsequent analysis. The determination of ammonia (as dissolved NH3 and ammonium ion) in blood, plasma, or semm is of value in detecting existing or impending hepatic coma and Reyes Syndrome (Meyerhoff and Robins 1980 Tietz 1970). The determination of ammonia in urine had historically been used as an indicator of the kidney s ability to produce ammonia however, this procedure has been replaced by more modem and accurate tests for kidney function. Procedures for the determination of ammonia in biological samples are found in Table 7-1. Ammonia is also tested for in calculi (abnormal concretions in the body formed of mineral deposits, often found in the gall bladder, kidney, or bladder) (Tietz 1970) however, this is not a quantitative test and is not included in Table 7-1. 

Steposol . [Stepan] Ammonium ether sulfate for gypsum board, cellular concrete, air drilling, foam cleaners. 

AMMONIUM CARBAZOATE (131-74-8) Flammable solid. Dry material is a heat-, friction-, and shock-sensitive highexplosive. Dust or powder forms explosive mixture with air. Exploded in elevated temperatures above 250°F/121°C. A powerful oxidizer. Violent reaction with many materials, including reducing agents, combustible materials, fuels, organic substances, sodium nitrite. Contact with most metals, strong bases, concrete, or plaster produces salts that are more heat- and shock-sensitive than the original material. Water increases rate of reactivity with metals. Usually shipped in water solutions up to 90% 10% minimum. Disposal must be handled by explosives experts. 

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