Talk:Soda–lime glass

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Relation to cristallo

Some web sites indicate that soda-lime glass was invented around 1450 in Murano, where it was named cristallo.EAS 05:01, 17 November 2006 (UTC)[reply]

I believe the "Typical thermal/Mechanical Properties" is for borosilicate glass, not soda-lime glass, as I know the annealing temperature of soda-lime glass is 968 degrees F.66.32.207.199 18:17, 31 January 2007 (UTC) - Corrected--Afluegel (talk) 12:35, 20 December 2007 (UTC)[reply]

Pyrex made from soda-lime glass?

In reference (1) in the pyrex article it is stated: "Pyrex(R) glass products are made of soda lime glass and are available in a number of sizes, shapes and colors for a variety of cooking and storage functions." However, I do not believe that the person who wrote this up (what is his/her name actually?) really knows what he is talking about. If bakeware really would be made of soda-lime glass it would shatter quite often during baking or when exposing it to cold air afterwards, and the product would not sell any longer. I would like to propose replacing reference (1) in the pyrex article with one in a well reviewed technical book or journal. This discussion should not influence the soda-lime glass article.--Afluegel (talk) 10:19, 26 January 2008 (UTC)[reply]

This is not true. I emailed Pyrex and received this response:

Consumer Help Center <HelpCenter@worldkitchen.com>
to	xxxxx@xxxxx.com,
subject	RE: Pyrex - General Question
Reply
Thank you for contacting World Kitchen, LLC
Please be advised that all Pyrex is made from soda-lime glass.

For further assistance, please contact our Consumer Care Center at
800-999-3436.  Representatives are available from 8am to 6pm, EST,
Monday through Thursday and 8am to 5pm on Friday, and will be more than
happy to assist you.

Sincerely,

Tiffany
World Kitchen Consumer Care Center
800-999-3436

You can visit http://www.pyrex.com (http://www.pyrexware.com/ for the USA site) and ask them yourself if you'd like. —Preceding unsigned comment added by 70.248.177.202 (talk) 22:02, 26 January 2008 (UTC)[reply]

I don't think Pyrex kitchenware was ever made of the same stuff as Pyrex borosilicate labware. In the 1970s I put a Pyrex one-quart measuring cup full of water on a gas stove, and it cracked. Some thermal-shock resistance. And plain old soda-lime glass is fine in an oven and in any situation where you heed the same restrictions that they have always (at least since the 1970s) specified for Pyrex kitchenware: not for stovetop use, etc. (I can't remember all of them).75.72.167.199 (talk) 20:51, 21 December 2008 (UTC)[reply]

There is a not-necessarily-very-reliable article on ConsumerAffairs.com about how pyrex explodes unsafely under normal use. The story isn't very consistent, and is very thoroughly contradicted by the response from Pyrex, which they posted without comment or rebuttal. Also, I can't help but notice that ConsumerAffairs.com seems to be a fishing ground for class action lawyers looking for a case. Consumer Reports, a name I trust much more in this regard, has said nothing about any dangers from Pyrex, in spite of their being referenced by ConsumerAffairs in the article.

I think the line about borosilicate glass no longer being used in Pyrex is unsupported, since the SEC filing says nothing about glass chemistry or changes in formula, it's a boring financial document. ConsumerAffairs.com is the only source for this, and I don't think they're reliable enough to cite. --TexasDex ★ 07:23, 24 February 2009 (UTC)[reply]

"Green and brown bottles are made from ... iron oxide"

But iron oxide isn't green? 213.122.12.44 (talk) 20:59, 20 June 2012 (UTC)[reply]

yeah... 128.138.65.34 (talk) 19:00, 27 July 2015 (UTC)[reply]