Question

Is sal ammoniac a sublimatory substance

Answer 1

Thank you for asking the question.
let me help you in finding the answer.

Sal ammoniac is also known as ammonium chloride.
It is appears to sublime upon heating but the reality is that it is decomposes into  ammonia and hydrogen chloride gas.
NH4CL→  NH3 + HCL

Also, This rare compound is actually found in volcanic region forming a volcanic rock near fume releasing vents. The crystal deposits directly from the gaseous state.
Hope this will help you.