Anti-corrosive agents

In a similar study, Gray et al. (60) investigated the possible formation of N-nitrosamines in heated chicken frankfurters which been prepared with various levels of nitrite (0-156 mg/kg). As expected, apparent N-nitrosamine levels increased with increasing concentrations of nitrite, but did not exceed 4 yg/kg except for two samples which contained 8 and II yg/kg of NMOR. The presence of these relatively high levels of NMOR was confirmed by mass spectrometry and raised the question as to its mode of formation. It was shown to be due to the morpholine present in the steam entering the smokehouse, as this amine is commonly used as a corrosion inhibitor in steam process equipment ( ). The detectable levels of NMOR in the Canadian study ( ) were also attributed in part to the use of morpholine as an anti-corrosion agent in the steam supply (62). 

Fourier transform infrared reflection-absorption spectroscopy (FT-IFRAS) is applied to the study of corrosion protection of copper by an organic coating. Poly-N-vinyliroidazole (PVI(D) and poly-4(5)-vinylimidazole (PVI(4)) are demonstrated to be effective new polymeric anti-corrosion agents for copper at elevated temperatures. Oxidation of copper is suppressed even at 400° C. PVI(1) and PVI(4) are more effective anti-oxidants than the most commonly used corrosion inhibitors, benzotriazole and undecyllmldazole, at elevated temperatures. These new polymeric agents are water soluble and easy to treat the metal surface. 

Azole compounds such as benzotriazole, benzimidazole, indazole and imidazoles are efficient anti-corrosion agents for copper and copper-base alloys [1-10]. Many experimental techniques [11-15] have been used to study the corrosion inhibition mechanisms, however, the mechanisms are still not well understood. It is believed that the complex formation between copper and nitrogen atoms would inhibit oxygen adsorption on copper surface [16-20]. 

Anti-corrosion agents Anti-static agents Candles... 

Cadmium (Cd) is a non-essensial metal used in industry as an anti-corrosive agent, and is found as a contaminant in food and also in cigarette smoke. The most serious consequence of chronic Cd poisoning is lung- and prostate cancer but the first effect during chronic intake is kidney damage, manifested by marked proteinuria [164]. Under chronic exposure, cadmium is primarily taken up by the liver, where it induces synthesis of metallothionein (MT) and induces formation of cadmium-metallothionein complexes. 

Barium chromate is used in the following applications as an anti-corrosive agent, as a pigment in paint, in ignition control devices, in safety matches, as a constituent in pyrotechnic compositions, and as a coloring agent in ceramics. 

Alkanolamides are also used in shampoos as thickening agents, and as anti-static and anti-corrosion agents in detergents. 

Compounds of types (6.762) have been patented as anti-corrosive agents, lubricant additives and detergent additives, [9] and have found use in metal coating compositions [10]. When phosphonic acid groups are separated by more than one carbon atom, the sequestering power is greatly reduced, but it is increased by carboxy gronp substitution. 

HjCCCHj) CgH4 SOjNa. In addition to the phosphate and the surfactant, several other components are usually present. These include anti-corrosive agents, bleaches, optical brighteners, anti-static agents, anti-redeposition agents, fillers, colouring, and perfume. 

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