The acidity of tellurols can be inferred by the acidity and dissociation constant of hydrogen telluride, , which has a (first) pK of 2.64 corresponding to a dissociation constant of 2.3 × 10.  has a lower pK and higher dissociation constant than  and . The pKa is 9.3 for  vs 10.8 for .
The absence of hydrogen-bonding explains the low boiling temperature of tellurols.