Why do Triton X-100 and Tween 20 bottle lids always break?

  • Thread starter Thread starter alfredhershey
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SUMMARY

The lids on Triton X-100 and Tween 20 bottles frequently break due to the degradation of plastics caused by the detergents. Cracks typically form along the edge where the horizontal circular top meets the vertical sides of the screw cap. This failure is attributed to the chemical interaction between the detergents and the plastic, as well as the design of the caps which concentrates stress at specific points during tightening. Users should be aware of potential leaching of substances into the solution as a result of this degradation.

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  • Knowledge of Triton X-100 and Tween 20 properties
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alfredhershey
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Why do the lids on Triton X-100 and Tween 20 break all the time? The lid on every bottle I've had has always cracked in a very distinctive manner (ie right along the edge where the horizontal circular top meets the vertical sides that screw on).

Thanks
 
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I've noticed this as well. Certainly, the detergents must degrade the plastics (which may be leaching substances into the solution!). The location of the cracks is probably due to a combination of accessibility to the detergent solution, the design of the caps, and the points on the cap that bear the most force when tightened.
 

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