Assertion: melanin | /r/HasProperty | soluble
Facets:
value: in acetic acid
type: OTHER
value: in , water
type: LOCATION
value: in an aqueous buffered solution
type: OTHER
value: in aqueous solution
type: MANNER
value: really
type: DEGREE
value: in formic acid
type: LOCATION
value: in dilute alkalis
type: LOCATION
Source sentences:
text: A flap of black skin (25 square inches) is macerated in 5% KOH, melanin being soluble in dilute alkalis; The solution obtained is assayed by spectrophotometry; The analysis reveals a high absorption (without characteristic band however) at the beginning of the visible spectrum in the violet and a minimum absorption at the end of the spectrum in the red.
text: The melanin obtained is then soluble in acetic acid, formic acid or mineral acids having a concentration of less than N / 10.
text: If the melanin were really soluble, she surmised, it should be useful as a cosmetic.
text: The present invention relates to a melanin that is soluble in aqueous solution, e.g., water or an aqueous buffered solution, at a pH of at least 5 to 9, preferably 6.5 to 7.5, at a temperature of 0° to 100° C.