Definition of Caustic?

tomtucson

New member
Is it anything above a certain Ph? Have to contain sodium or potassium hydroxide? Theres lye in baby shampoo and eye drops so contains caustics and is caustic are two different things.
 
That is a very good question because I see products promoted as "no Caustic" or "NO Caustic Chemicals" or other things along those lines but they do have potassium hydroxide which is close to caustic so I wonder if there is some official definition type thing that the companies use so they can say those things even if it has potassium hydroxide in the mix.
 
caustic substance
Web definitions
A corrosive substance is one that will destroy and damage other substances with which it comes into contact. It may attack a great variety of materials, including metals and various organic compounds, but people are mostly concerned with its effects on living tissue.
 
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