Glass grinding

Grinding glass Grinding wheel Grinding wheels... 

Cleaning of parts CO2 Oil from contaminated glass grinds, organic additives from extrusion-molded ceramic parts... 

Textiles, bleaching agent, disinfectant Glass, grinding agent... 

Now grind up the mixture of solution and glass in the mortar to ensure extraction of the sodium salts, and then filter. Divide the filtrate into three portions, reserving two portions for testing for halogens and sulphur. 

Sodamide may be readily pulverised by grinding in a glass mortar under an inert hydrocarbon solvent (benzene, toluene, xylene, etc.). 

Grind finely pure laboratory grade, anhydrous potassium fluoride, and heat it in an electrically heated oven at 180-210° store in a desiccator. Before use, dry the powdered salt at 180° for 3 hours and grind again in a warm (ca. 50°) glass mortar. 

Grind 25 g. of anthraniUc acid with 46 ml. of concentrated hydrochloric acid and 75 ml. of water in a glass mortar, and transfer the suspension to a 500 ml. round-bottomed flask which is provided with a mechanical stirrer. Cool the contents of the flask in an ice bath to 0-5°, and add a solution of 13-2 g. of sodium nitrite in 175 ml. of water from a dropping fimnel during about 20 minutes. Keep the diazonium solution below 6° and, if it is not clear, filter it by suction through a chilled Buchner funnel immediately before use. 

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