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Previous by Date: Subject: Re: [DCHAS-L] water reactivity of sulfuric acid solution Date: Friday, February 18, 2022 at 1:23:58 PM Author: Info <info**At_Symbol_Here**ilpi.com> |
Next by Date: Subject: Re: [DCHAS-L] water reactivity of sulfuric acid solution Date: Fri, 18 Feb 2022 14:49:39 -0500 Author: Jeffrey Lewin |
Under Section 5: Firefighting Measures, some manufacturers have stated water is suitable, but in specific concentrations.
Water Suitable:
2N solution
Water Non-Suitable:
R8333000.pdf (riccachemical.com)
7.5N solution
Surprisingly, however, some recommend water for firefighting even at higher concentrations:
Safety Data Sheet (sigmaaldrich.com)
Prod: SX1244, ACS grade
Concentration: <= 100%
Safety Data Sheet (sigmaaldrich.com)
Prod: S1526
Concentration: <= 100%
I don’t think that’s very helpful, but I hope you’ll keep us updated on how you proceed.
Best,
-P
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
On Behalf Of Richard Palluzi
Sent: Friday, February 18, 2022 11:30 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] water reactivity of sulfuric acid solution
I assume the sulfuric acid is purchased from a vendor at a given concentration. If their SDS shows it as a corrosive or water reactive materials the building codes will require the storage of the as received
materials to comply with the relevant chapters of the IBC and IFC. They will apply to where the as received materials are stored and handled.
It the sulphuric acid is diluted low enough that it is no longer a corrosive or water the relevant chapters of the IBC and IFC if they are in a different control area. Since the control reas are limited per
floor in a building this is often not possible.
The building is either 100% sprinklered or you cannot double the MAQ so this will not be affected by whether it is or is not dilute enough (usually).
So I am suggesting that maybe someone is asking the wrong question.
Glad to discuss offline if you want to give me a call.
Richard Palluzi
PE, CSP,FAIChE
Pilot plant and laboratory consulting, safety, design, reviews, and training
www.linkedin.com/in/richardppalluzillc/
Richard P Palluzi LLC
72 Summit Drive
Basking Ridge, NJ 07920
rpalluzi**At_Symbol_Here**verizon.net
908-285-3782
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
On Behalf Of Melissa Ballard
Sent: Friday, February 18, 2022 11:08 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] water reactivity of sulfuric acid solution
Can anyone help with this? I was asked to determine at what concentration would a sulfuric acid solution be considered no longer water reactive (or how dilute does it need to
be)? This is in the context of storage and firefighting/fire suppression systems (Building Code for Water Reactive Materials & NFPA 704 Annex F).
Maybe it is a simple calculation but my brain can’t handle it today. Thanks!!
Melissa Ballard
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