acetate
乙酸盐,醋酸纤维,醋酸盐,乙酸酯
Definitions
- 1
- : Chemistry. a salt or ester of acetic acid.
- : Also called acetate rayon. a synthetic filament, yarn, or fabric composed of a derivative of the acetic ester of cellulose, differing from viscose rayon in having greater strength when wet and greater sensitivity to high temperatures.
- : a sheet of clear plastic film fastened over the front of artwork for protection, as an overlay, or the like.
- : a slow-burning base material, cellulose triacetate, used for motion-picture film to minimize fire hazard during projection, and also for animation cells.
Examples
After a pack’s first use, you’ll need to boil the hand warmers for approximately 10 minutes before using them again, effectively reactivating the chemicals and returning the sodium acetate to its liquid form.
He wanted to know if a butterfly could remember something about its life as a caterpillar, so he exposed caterpillars to the scent of ethyl acetate followed by a mild electric shock.
After acquiring an aversion to ethyl acetate, the caterpillars pupated and, after emerging as adult butterflies several weeks later, were tested for memory of their aversive training.
First the two molecules react together to form two other chemicals — sodium acetate and carbonic acid.
A record would spend years in larval form as an acetate, the big waxy master from which copies were made.
Once both tracks hit acetate, a master record was sent to URP for pressing.
The prototypes are built from a recyclable flat foam-rubber called ethylene vinyl acetate (EVA).
This fluid is then heated, adding crystals of sodium acetate until it becomes perfectly clear.
A portion of the yellow filtrate gave a reddish yellow precipitate with lead acetate.
A precipitate obtained by adding lead acetate to a filtered solution of the original substance in 50 per cent.
To the filtrate was added an excess of a solution of lead acetate in 50 per cent.
The poison, if precipitated at all by lead acetate, must have gone down in one of the preceding fractions.