Are pool chemicals dangerous?  They can be if not properly handled and stored. Though, the hazards which cause the most worry represent the smallest real dangers. 

Rules for protecting you & your family:

Don’t buy any more chemicals that you will need for one season. Chemicals don’t keep well for long periods of time. 

Don’t store pool chemicals where other materials could fall into them. A bad mixture could have dire results. 

Never mix chemicals. So when adding chemicals to your pool allow one to disappear before adding another. Use gloves and safety glasses. Kitchen gloves and sunglass will do fine. 

Keep all chemicals safe and away from children.  Use safety locks and store in a special cabinet.