# CDs in a metal case -- okay to leave in a car?

**URL:** <https://boards.straightdope.com/t/cds-in-a-metal-case-okay-to-leave-in-a-car/411033>\
**Category:** Factual Questions\
**Created:** [July 9, 2007, 10:26am UTC](https://boards.straightdope.com/t/cds-in-a-metal-case-okay-to-leave-in-a-car/411033 "2007-07-09T10:26:44Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![twickster](https://avatars.discourse-cdn.com/v4/letter/t/ec9cab/32.png) [@twickster](https://boards.straightdope.com/u/twickster)\
**Post date:** [July 9, 2007, 10:26am UTC](https://boards.straightdope.com/t/cds-in-a-metal-case-okay-to-leave-in-a-car/411033/1 "2007-07-09T10:26:44Z")

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I just bought a metal case for traveling with CDs. When I’m not traveling, I usually leave the case in the car – would there be a problem with storing CDs in a hot car in a metal case?

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**Author:** ![twickster](https://avatars.discourse-cdn.com/v4/letter/t/ec9cab/32.png) [@twickster](https://boards.straightdope.com/u/twickster)\
**Post date:** [July 10, 2007, 12:25am UTC](https://boards.straightdope.com/t/cds-in-a-metal-case-okay-to-leave-in-a-car/411033/2 "2007-07-10T00:25:15Z")

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So … that would be “what difference would the metal case make?”

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**Author:** ![Squink](https://avatars.discourse-cdn.com/v4/letter/s/b5e925/32.png) [@Squink](https://boards.straightdope.com/u/Squink)\
**Post date:** [July 10, 2007, 1:09am UTC](https://boards.straightdope.com/t/cds-in-a-metal-case-okay-to-leave-in-a-car/411033/3 "2007-07-10T01:09:59Z")

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Polycarbonate melts at around 375°F.  
Some phthalocyanine dyes used for CDR’s decompose at 600°F

You _should_ be OK heat-wise.

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**Author:** ![twickster](https://avatars.discourse-cdn.com/v4/letter/t/ec9cab/32.png) [@twickster](https://boards.straightdope.com/u/twickster)\
**Post date:** [July 10, 2007, 1:35am UTC](https://boards.straightdope.com/t/cds-in-a-metal-case-okay-to-leave-in-a-car/411033/4 "2007-07-10T01:35:21Z")

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Thanks!