The phrase "colourless of" is not a correct or commonly used construction in written English.
It may be mistaken for an adjective phrase modifying a noun, but it does not make sense in this context. Instead, the correct construction would be "lacking color" or "without color." For example, "The water in the lake was colorless" or "The painting was colorless." Alternatively, you could use "colourless" as an adjective on its own, without the preposition "of." For example, "She wore a colourless dress" or "His face turned colourless with fear." Overall, it is best to avoid using "colourless of" in written English as it is not considered grammatically correct.
A change in colour from yellow to colourless on addition of dilute hydrochloric acid was an indication of the presence of flavonoids [ 26].
Indigo is a derivative of colourless glucoside of the enol form of indoxyl e.g. indican (Laitonjam and Wangkheirakpam 2011).
Compounds 1 and 2 were prepared by the mixing of hot methanolic solutions of PMN (62 mg, Shah Pharma-chem, India) or AMPY (Aldrich) and the corresponding acids -benzene sulfonic acid (40 mg, Merck) & 3-carboxy-4-hydroxy-benzene sulfonic acid (55 mg, Merck) in 1 1 molar ratio and warming over water bath for 20 min. After a few days blocks of colourless crystals of compound 1 and 2 were obtained.
Another deceptive practice is that of dyeing colourless pieces of jade green to simulate high-quality stone.
Confirmation of these weak interactions came from an X-ray crystallographic analysis of the colourless crystals of [EMIM][GeCl3] which formed over several months at ambient temperature.
During that time, we were at the receiving end of a feast of quite incompatible ingredients: endless pauses; long passages of improvisation (some meaningful, some not); flashes of blazing brilliance and long stretches of the bored, colourless delivery of someone just going through the motions.
In contrast to this wonderful depth of colour, the jelly at the perimeter of the bell is colourless and of a remarkable transparent purity.
Because of its low index of refraction and low dispersion, clear colourless fluorite of optical quality is used for apochromatic lenses.
There simply isn't space to be interesting about them all - though she is about quite a few - and you get the impression, now and then, of an imposing but oddly colourless cavalcade of the great and good.
He started out nothing short of plummy, in a sports coat, describing cars in the rather colourless terms of the true enthusiast, people to whom the length of the driver's door matters.
