Question

unit exam - matter and change

sodium hypochlorite(bleach)
section 7: handling and storage
storage conditions
no metal containers.
tightly closed.
do not store near acids.
storage stability
recommended storage temperature: 2-8 °c
storage class
storage class (trgs 510): 8b- non-combustible, corrosive hazardous materials

considering the hazards information from the sds, which is the safest choice on how to store bleach?

• in a container with no lid
• in a room set to 20℃
• in a container made of metal
• with the cap closed tightly

Explanation:

The SDS (Safety Data Sheet) for bleach lists storage rules: tightly closed containers, no metal containers, storage temperature 2-8°C, and no storage near acids. We match each option to these rules:

1. "in a container with no lid" violates "tightly closed"
2. "in a room set to 20°C" violates 2-8°C temp
3. "in a container made of metal" violates "no metal containers"
4. "with the cap closed tightly" matches the "tightly closed" rule.

Answer:

with the cap closed tightly