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化學(xué)配方數(shù)據(jù)庫(kù)
配方類(lèi)型: METALS
配方說(shuō)明: Developing the Color
配方組成:
配制方法: One or two seconds exposure to a moist ammonia atmosphere will cause the formation of a dense insoluble dye in the unexposed areas of the aluminum. The background sometimes contains a white precipitate.
Dyes generally change color with pH. For this reason the final color appears only after the ammonia has completely evaporated.

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