The byproducts of the baking-soda/ferric-chloride interaction occupy about 7-10x the volume of the original ingredients.

Divide by solution concentration to obtain solution weight. This is due to the fact that product use, … But not the CuCl2. IDENTIFICATION OF THE SUBSTANCE / PREPARATION AND OF THE COMPANY / UNDERTAKING Product identifier: Product name: Ferric chloride solution Synonyms, Trade Names: Iron (III) chloride solution REACH Registration number: 01-2119497998-05 CAS-No. That's pretty innocuous. After etching the FeCl3 becomes a mixture of FeCl3 (unused etchant), FeO (rust), and CuCl2 (Copper(II) Chloride). : 7705-08-0 EC No. This will foam up, so do it slowly at first. Not only jewelers use ferric chloride - sculptors, printers, and people making printed circuit boards also use it, so the local hazardous waste disposal folk will be extremely familiar with it.

(454 kg), Based on anhydrous ferric chloride. It's very easy - put "ferric chloride disposal" into Google and you'll find many methods of treating the solution in order to dispose of it safely (as well as warnings about unsafe disposal). SAFETY DATA SHEET Ferric chloride solution Page 1 Issued: 30/07/2014 Revision No: 1 1. But it will do much the same with the iron and any other metals in the … This means that if you have a tub of etchant, filled to the brim, and you dump a box of baking soda into it, the reaction will overflow the container and cover your counter with ooze within 20 seconds or so. It's easy enough to come by, and the Ferric by itself is no big environmental problem. It's that Copper(II) Chloride that's the problem - you can't just tip it down the drain. Tim Stevens: 13/01/2018 17:52:51: 1166 forum posts: Washing soda (sodium carbonate) will precipitate the copper as insoluble copper carbonate.

You gotta get rid of that copper from solution before you can dispose of the rest of it. ): Ferric chloride is a traditional home-use circuit board etchant. the the ferric chloride is fresh. Disposal: Under the Resource Conservation and Recovery Act (RCRA), it is the responsibility of the user to determine whether a substance should be classified as a hazardous waste at the time of disposal. Unspent FeCl3 can be poured down the drain I guess.

CERCLA Reportable Discharge (RQ): 1000 lbs.

: 231-729-4 …

The problem is the copper. Copper and iron would be precipitated and the NaCl (table salt) would be in solution. One of them recently contacted me about disposal because he was worried about any damage he may be doing, which prompted my search. One company recommends adding sodium carbonate and/or sodium hydroxide to the ferric chloride. Stop Using Ferric Chloride Etchant! (A Better Etching Solution. The …