Always follow these 3 basic rules of chemical safety.
One . Make sure the chemicals are stored in their original containers with their lables. Do not transfer them to containers like water bottles.
Two. Always wear appropriate personal protective equipment like gloves, masks, boots while handling the chemicals. Always wear safety glasses while working with liquid chemicals to prevent damage to eyes.
And finally, always dispose off chemicals safely. Do not dispose them into drains, or sinks. Dispose them through authorized hazardous waste handling agencies.
And while working with chemicals, do remember to keep the MSDS nearby.