| 释义 |
▪ I. ‖ purree|ˈpʌriː|
Also purrhee, piuri.
A yellow colouring matter imported from India and China, from which the pigment Indian yellow is prepared. It is essentially the magnesium salt of purreic or euxanthic acid: see below.
1852Fownes' Chem. (ed. 4) 582 Purree, or Indian yellow, a body of unknown origin, used in water-colour painting, according to the researches of Stenhouse and Erdmann, is a compound of magnesia with a substance termed purreic or euxanthic acid. 1875Ure's Dict. Arts III. 669 Purree..is said to be formed from the urine of camels, elephants, and buffaloes, after the animals have eaten the fruit of the mangosteen. 1890Kew Bulletin 49 Piuri is a yellow dye used chiefly in painting walls of houses, doors, and railings.
Hence puˈrreic a. Chem., in purreic acid, an acid, C19H16O10, obtained in pale yellow needles, which forms deep yellow compounds with the alkalis and earths. purrenone [-one a]: see quot. 1857.
1852Fownes' Chem. (ed. 4) 582 Purreic acid [see above]. Ibid., A neutral crystalline sublimate, purrenone or euxanthone. 1857Miller Elem. Chem. III. 518 When euxanthic acid is heated..a little above 212°, it melts, and a yellow sublimate of purrenone or euxanthone (C40H12O12) is formed.
▪ II. purree
obs. f. puree n.1 |