... Each 1g dissolved in 100ml water, 16ml80 °C hot water, 20ml glycerol Boiling point : 285°C Index of refraction : 1.524 Purity: ... cakes, especially content of dairy products.For analytical chemistry, protein nitrogen heterocyclic indene, inspection of three phenol and tannin ... acid.In the pharmaceutical industry, for the production of antihypertensive drug methyldopa, catechol drug L-dopa, ...