I think your main issue in storage is to keep away from moisture.

 

ECHA info says Registration Dossier - ECHA (europa.eu)

Recommended storage temperature: < 40 °C,

No decomposition if used and stored according to specifications. Stable at ambient temperature. Decomposes before melting. Self-accelerating Decomposition Temperature (SADT): > 75 °C

 

Sigma says: 11633 (sigmaaldrich.com)

Storage conditions Keep container tightly closed in a dry and well-ventilated place. Store under inert gas. Moisture sensitive. Heat sensitive. Storage class Storage class (TRGS 510): 4.2: Pyrophoric and self-heating hazardous materials

 

 

-Tammy

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Craig Merlic
Sent: Monday, April 29, 2024 4:45 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Self-heating chemical storage

 

Jack,

 

That chemical is a double salt, so is far from meeting the definition of a flammable. (Salts have no vapor pressure to create a flash point.)  As an organic it is combustible (burns), but not flammable.  Therefore storage in a fridge should be fine.

 

Craig

 

Craig A. Merlic

Professor of Chemistry, UCLA Department of Chemistry and Biochemistry

Executive Director, UC Center for Laboratory Safety

http://cls.ucla.edu

 

 

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> on behalf of Jack Reidy <jreidy2**At_Symbol_Here**STANFORD.EDU>
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Date: Monday, April 29, 2024 at 2:18 PM
To: <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Subject: [DCHAS-L] Self-heating chemical storage

 

Hi all,

 

A researcher reached out asking about how to store 2,2′-Azobis(2-methylpropionamidine) dihydrochloride (aka AAPH). It’s a new lab working in borrowed space, and they don’t have a refrigerator rated for storing flammables. Is this something you think a lab could safely store in a flammables cabinet? Thanks!

Sincerely,

 

Jack Reidy (he/him)

Research Safety Specialist & Assistant Chemical Hygiene Officer

Environmental Health & Safety

Stanford University

484 Oak Road, Stanford, CA, 94305

Tel: (650) 497-7614

 

I acknowledge that the land on which I live and work is the ancestral and unceded land of the Muwekma Ohlone Tribe. As an uninvited guest on these lands, I am a beneficiary of the ongoing displacement of the Ohlone people. I pay my respects to the Native peoples, past and present.

 

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