Thanks for using HealthcareMagic forum.
is a corrosive agent. The amount of corrosion it causes on tissue depend on its concentration.
1.5% is not high enough to cause serious damage. However if your son is complaining of abdominal pain
or has vomiting
, it would be wise to visit the ER. If he is fine till now, I think he should be alright.
Keep all chemicals and non edible products away from the reach of children.
Hope it helps.