The chloride ion is not toxic in itself.
Toxicity depends on the cation present, especially heavy metals (e.g. lead in lead chloride). Metal chlorides react with acids to form hydrochloric acid. Chlorides if heated to decomposition release toxic chlorine gas.Disposal: Chloride solutions (not containing heavy metals) may be disposed of down the sink (to sewer). Ensure the solution pH is 8-10.
Also see Appendix E.
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