Question

which is not information needed when contacting a poison control center?
the childs name
the childs age and weight
the name an amount of poisonous substance
time of poisoning

Explanation:

When contacting a poison control center, the child's age and weight (to determine appropriate treatment dosages), the name and amount of the poisonous substance (to know the toxicity and antidote), and the time of poisoning (to assess the progression of symptoms) are crucial. However, the child's name is not essential for providing medical treatment or advice related to poisoning.

Answer:

the child's name