From: JOHN L STRAUGHN <0000120dde6ec15c-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject: Re: [DCHAS-L] Old Bleach
Date: Mon, 25 Oct 2021 21:51:16 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: DM5PR06MB234783E51763D126B3743F3E83839**At_Symbol_Here**

Bleach, one of my favorites: If it has TRULY remained sealed (no seam cracks or cap gaps) it should be fine. If otherwise, you may just have sodium bicarbonate, as carbon dioxide in air replaces the chlorine. At least give it a sniff (carefully).

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> on behalf of Patricia Leach <Patricia.Leach**At_Symbol_Here**TAMUC.EDU>
Sent: Monday, October 25, 2021 3:43 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Subject: [DCHAS-L] Old Bleach


I was wondering about using old stocks of bleach for disinfecting in bio labs. The bleach is about 2 years old and has never been opened. I am not sure if it is industrial or commercially available bleach. Any advice would be appreciated.


Patricia Leach

Environmental Health and Safety Coordinator

Emergency Management and Safety

Texas A&M University - Commerce

P: 903.468.3278

C: 316.644.8255


Mail: P.O. Box 3011, Commerce, TX 75429




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