- Industry: Printing & publishing
- Number of terms: 178089
- Number of blossaries: 0
- Company Profile:
McGraw Hill Financial, Inc. is an American publicly traded corporation headquartered in Rockefeller Center in New York City. Its primary areas of business are financial, publishing, and business services.
A test to distinguish between primary and secondary amines; it involves reaction of an amine with benzene disulforyl chloride in alkaline solution; primary amines give sulfonamides that are soluble in basic solution; secondary amines give insoluble derivatives; tertiary amines do not react with the reagent.
Industry:Chemistry
The appearance of a violet ring when concentrated sulfuric acid is added to a mixture that includes a protein and glyoxylic acid; however, gelatin and zein do not show the reaction.
Industry:Chemistry
Device for the determination of the condensation temperature (sublimation point) of sublimed solids.
Industry:Chemistry
Aqueous solution of ammonium molybdate and potassium ferrocyanide used as a reagent to detect free mineral acid.
Industry:Chemistry
Solution of iodine and mercuric chloride in alcohol; used to determine the iodine content of oils and fats.
Industry:Chemistry
Mathematical relationship between diffusion current, diffusion coefficient, and active-substance concentration; used for polarographic analysis calculations.
Industry:Chemistry
Analytical reagent used to test for ethyl alcohol; consists of an aqueous solution of mercuric nitrate and nitric acid.
Industry:Chemistry
A solution of 8 moles pyridine to 2 moles sulfur dioxide, with the addition of about 15 moles methanol and then 1 mole iodine; used to determine trace quantities of water by titration.
Industry:Chemistry
A method of determining trace quantities of water by titration; the Karl Fischer reagent is added in small increments to a glass flask containing the sample until the color changes from yellow to brown or a change in potential is observed at the end point.
Industry:Chemistry
Quantitative analysis of organic compounds to determine nitrogen content by interaction with concentrated sulfuric acid; ammonia is distilled from the NH<sub>4</sub>SO<sub>4</sub> formed.
Industry:Chemistry
