Вы искали: phenolphtaleinopløsning (Датский - Английский)

phenolphtaleinopløsning
phenolphthalein solution

phenolphtaleinopløsning = 1 g pr. 100 ml 95 % ethanol
phenolphtalein solution = 1 g/100 ml 95 % ethanol;

(1 % phenolphtaleinopløsning i 96 % vol. neutral ethanal
hydrochloric acid (r20 = 1,18 to 1,19 g/ml) diluted 1/4 (v/v).

for at undgå eventuel interferens tilsættes 10 ml edta-opløsning (4.5), nogle dråber phenolphtaleinopløsning (4.4) og under omrystning, dråbe for dråbe natriumhydroxidopløsning (4.3) til rød farve og yderligere nogle dråber natriumhydroxid i overskud (i almindelighed er 1 ml natriumhydroxid tilstrækkeligt til at neutralisere og give overskud).
to remove any interference, add 10 ml of the edta solution (4.5), several drops of the phenolphtalein solution (4.4) and stir in, drop by drop, sodium hydroxide solution (4.3) until it turns red, then finally add a few more drops of sodium hydroxide to ensure an excess (usually 1 ml of sodium hydroxide is sufficient to neutralize the sample and ensure an excess).