# [SOLVED]Difference between caustic soda and caustic potash

#### Dhamnekar Winod

##### Active member
I read the chemical formula for Potassium Hydroxide (Caustic soda)=NaOH (1)

I also read the chemical formula for caustic potash having same chemical name Potassium Hydroxide =KOH.

I want to know what is the difference between these two chemical compounds in terms atoms, molecules, ions?

Why the name of (1) is not Sodium Hydroxide as it contains sodium(Na)?

#### Klaas van Aarsen

##### MHB Seeker
Staff member
It looks like a typo in your book. The name of $\ce{NaOH}$ is indeed Sodium Hydroxide, also known as lye and caustic soda.