Hydrochloric acid
The Effect of Temperature and Acid Concentration on Corrosion of Low Carbon Steel in Hydrochloric Acid Media
... of acid, alkali and salt solutions. Hydrochloric acid is the most difficult of the common acids to handle from the standpoints of corrosion and materials of ...the acid by itself, even in ...
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Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis.
... and 7 d under stirring at the speed of 200 rpm. For the HCl- hydrolyzed SNC, 20 g starch powders were mixed with 400 mL 2.2 N hydrochloric acid solution at 40 uC for 7 d with constantly stirring at the ...
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Effect of commercial fluoride dentifrices against hydrochloric acid in an erosionabrasion model
... Patients who suffer from eating disorders, such as recurrent vomiting, regurgitation, or gastroesophageal reflux [1, 2], are at a higher risk for erosion due to chronic oral contact of hydrochloric acid, ...
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Effects of prone and supine position on oxygenation and inflammatory mediator in a hydrochloric acid-induced lung dysfunction in rats
... Purpose: To compare the effectiveness of mechanical ventilation of supine versus prone position in hydrochloric acid (HCl)-induced lung dysfunction. Methods: Twenty, adult, male, Wistar-EPM-1 rats were ...
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Anticoccidial activity of hydrochloric acid (HCl) against Eimeria tenella in broiler chickens
... Data from the present study indicate that lower doses of HCl have anticoccidial activity against Eimeria tenella in broiler chickens; therefore, it has the potential to be used as an alternative coccidiosis control ...
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Variation of structures of ingredients of desiccated coconut during hydrolysis by hydrochloric acid at low temperature
... gastric can range from 1.50 to 3.50 and it works at around 37 °C (Corcoran et al., 2007; Marieb & Hoehn, 2010; Silva et al., 2016). According to the United States Pharmacopoeia (The United States Pharmacopeia, 1995), ...
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Investigating the Acid Failure of Aluminium Alloy in 2 M Hydrochloric Acid Using Vernonia amygdalina
... Studies [2-6] have shown that several synthetic inhibitors are often used for the purpose of combating damage of metals in service. These inhibitors have been found to be toxic to the environment by harming aquatic and ...
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Rendering wastes obtained from gold analysis by the lead-fusion fire-assay method non-hazardous
... In this work we presented a simple method for rendering this waste non-hazardous by removing lead through extraction. From both technical and economical viewpoints, the best conditions achieved involve the use of ...
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Braz. J. Phys. vol.38 número3A
... diluted hydrochloric acid [1, ...diluted hydrochloric acid, the etching process and surface morphology are difficult to control due to the high etching rate even if the solution concentration ...
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Braz. Dent. J. vol.27 número3
... several acid solutions and different exposure times (60 – 750 ...action acid in short periods of time and how it affects the erosive process development and the methodology employed in the assessments of ...
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J. Braz. Chem. Soc. vol.19 número6
... Since the loop with 2.5 cm long presented the best results for hydrochloric acid, this length was also adopted for both sodium chloride and sodium hydroxide eluent solutions. It must be also considered that ...
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Mat. Res. vol.13 número3
... Samples of Al-32Si-2Cu intermetallic was subjected to electrochemical cathodic charging and corrosion test in hydrochloric acid (HCl) solution of concentrations ranging from 0.1 to 3.0 M. The influence of ...
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Braz. J. Pharm. Sci. vol.47 número4
... 0.1N hydrochloric acid was used as dissolution medium and release was monitored for 2 hours to verify the immediate release pattern of the drug in acidic pH, followed by pH ...
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Braz. J. Pharm. Sci. vol.46 número2
... can be used safely during the dissolution test, since there was no signiicant drug adsorption. The difference in values between the solutions was less than 2%. In order to evaluate lamotrigine stability in 0.01 M ...
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J. Braz. Chem. Soc. vol.10 número1
... The key reaction in our initial proposal for the synthesis of lasiodiplodin was the conversion of alkenylresorcinols 2 into the corresponding substituted salicylic acids. Attempts at direct carboxylation of 2, via the ...
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Rev. bras. farmacogn. vol.23 número1
... Abstract: Calophyllum brasiliense Cambess, Calophyllaceae, is of great interest in folk medicine and is used in the treatment of various diseases such as diabetes. Granules containing the hydroethanolic extract from the ...
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Principles of calcite dissolution in human and artificial otoconia.
... Human otoconia provide mechanical stimuli to deflect hair cells of the vestibular sensory epithelium for purposes of detecting linear acceleration and head tilts. During lifetime, the volume and number of otoconia are ...
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Mat. Res. vol.19 número3
... The electrodeposition was carried out using a ZD-A direct current power supply. Two nickel samples with the size of 70×20×5 mm3 were used as the anode, and 45 steel sample with the size of 12×12×5 mm3 was used as the ...
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Quím. Nova vol.32 número8
... The development of tests for in vitro dissolution assays of medi- cines is very important. The inexistence of speciic method for BNZ tablet (100 mg) in oficial summaries and scientiic literature highli- ghts the ...
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Methods for Extraction and Charaterization of Tannins from Some Acacia Species of Sudan
... The study is aimed to analyze and compare extraction methods of tannins from three common Acacia species of Sudan. The Acacia species selected were Acacia nilotica, Acacia seyal and Acacia senegal. Bark samples from bulk ...
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