A choice is to do a different kind of double displacement reaction. For example, copper sulfate with sodium hydroxide is known to form a blue precipitate.. These chemicals have other hazards that need to be considered. You can check their SDS or look them up in the Rehab Lab site.
This link is nice to have and a great reference. In my opinion, please remember that perusing various SDS (from different vendors) for the chemicals is always best!
Regards, Yamy
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Yamaira I. Gonzalez, PhD
Yamy LLC
302-388-9368
gonzalyi**At_Symbol_Here**gmail.com
From: Ralph Stuart <rstuartcih**At_Symbol_Here**ME.COM> To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU Sent: Tuesday, January 19, 2016 7:57 AM Subject: Re: [DCHAS-L] HS teacher request info
Included on this site is a database of about 1000 chemicals that have been found in high school labs over the last 20 years, what they might have been used for, and an opinion from a group of science educators as to what grade level they appropriate to use for. Lead Nitrate is listed as "high school" for lowest grade level and "lead iodide" isn't listed, although "Lead Diiodide" is as "High school w/ chemical hygiene officer approval".
The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary**At_Symbol_Here**dchas.org. The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.
