The usage and storage of chemicals in Singapore are subjected to a number of regulations. Please view http://www.nus.edu.sg/osh/legalreg.htm to know legislative requirements. Some of regulations are:
Fire Safety (Petroleum & Flammable Material) Regulations 2005
Environmental Pollution Control Act (Hazardous Substances )
Arms & Explosives (Amendment) Act
Poisons Act
Chemical Weapons Convention
Biological Agent & Toxins Act
Safe practice in chemical storage
Store all chemicals by their hazards class and not in their alphabetical order. The Merck system or that following Fred HutchinsonCancer Research Centre are two good examples that you can follow.
Do not store chemicals in direct sunlight or near heat sources such as ovens
Date chemicals when first opened. If a particular chemical can become unsafe or deteriorate while in storage, an expiration date should also be included
Do not use the lab bench for permanent storage of chemicals.
Inspect your chemicals routinely for any signs of deterioration and for integrity of the label.
Do not store chemicals above eye levels. If the container breaks, the contents can fall onto the face and upper body.