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Author: Subject: Why have different colour lids?
CELamCheng
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[*] posted on 6-4-2020 at 22:33
Why have different colour lids?


My chemicals bottles have different colours lids, like black white red yellow blue. They have different functions?

[Edited on 20年04月07日 by CELamCheng]

[Edited on 20年04月07日 by CELamCheng]




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reactofurnace
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[*] posted on 6-4-2020 at 23:24


Quote: Originally posted by CELamCheng  
My chemicals bottles have different colours lids, like black white red yellow blue. They have different functions?

[Edited on 20年04月07日 by CELamCheng]

[Edited on 20年04月07日 by CELamCheng]


Not to my knowledge. Usually, the color lid choice is at the discretion of the chemical supplier. If you need safety info the warnings are usually print on the bottle as well as a fire diamond. The best practice is to refer to the reagent's MSDS prior to handling... It usually gives recommended PPE and safety precautions.
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CELamCheng
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[*] posted on 7-4-2020 at 04:45


If no difference then why not only use white?



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elementcollector1
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[*] posted on 7-4-2020 at 10:52


White's a colored dye, and other colors might be cheaper. Black would seem to be the cheapest, but perhaps the others are used on a per-supplier basis to differentiate types? It's not industrially standardized, as far as I know.



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[*] posted on 7-4-2020 at 12:41


Duran bottles use blue and red to colour code the material from which the lid is made
red for polybutylene terephthalate
blue for polypropylene.
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[*] posted on 7-4-2020 at 16:29


A general storage code, attributed to J. T. Baker chemical company, uses different colors to indicate the primary storage consideration for a chemical. Some of the colors are:
white = corrosive;
yellow = oxidizing and/or reactive;
red = flammable;
blue = toxic;
green = no more than a moderate hazard.

This information taken from "Illustrated Guide to Home Chemistry Experiments," by Robert Bruce Thompson.

[Edited on 4-8-2020 by CharlieA]
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CELamCheng
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[*] posted on 8-4-2020 at 01:06


The white colour not correction fluid white, is plastic original white.



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