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why aluminium chloride solution is pale yellow.

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AWK:
Different polymorphs of the same compound may have different colors, but when dissolved in hydrochloric acid - their solutions will show the same color.
Iron with a concentration above 1 ppm can be determined colorimetrically, qualitatively even visually, roughly quantitatively - by comparison with the color scale.
Higher mass after drying results rather from shorter time or lower drying temperature (amorphous aluminum hydroxide may need more time for drying).
100 ppm Fe3+ in HCl is rather colorless - it can be easily checked in the lab.

Aniket:
Dear Friends,

we cant understand aluminium chloride is transparent liquid as per theoretically. but in market we seen pale yellow solution.

we also understand about iron chloride impurity may cause yellow solution but iron is only 25 ppm.

so ,please give suggestion why this will happen?

billnotgatez:
@Aniket
I have merged your old thread with this newer thread because of the similarity.

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