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Subject: Re: the relationship with HDPE Tank & Sulfuric Acid

Date: 06/06/03 at 3:59 PM
Posted by: John
E-mail: phdjohn@yahoo.com
Message Posted:

In Reply to: the relationship with HDPE Tank & Sulfuric Acid posted by Goh on 12/31/02 at 4:04 AM:

The tank will last a few years but will turn black on the inside particularly at the acid contact surface. This material will sluff off as a very fine particulate and discolor the acid. This behavior is seen at room temperature. I believe the situation get worse faster at elevated temperature. Surface fluorination can slow the process down slightly but you are better off just changing out tanks every few years.

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