How does the corrosivity of hydrochloric acid change with its concentration? is 100% hydrochloric acid the most corrosive?

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Chen Jingwen

Hi there,

I am a little bit confused, and I wonder if 100% hydrochloric acid exists.

Abdelqader El Guerraf

Yes it depend, but i think 100% hydrochloric acid does not exist.

Milad Vahman

100%hcl exist at 80 bar pressure. maybe it is 99% but my question is that which is more corrosive?38% or 99%?