A 9kg gas cylinder for LPG (liquefied petroleum gas) when empty weighs around 8-10 pounds (3.6-4.5 kilograms). However, the exact weight may vary depending on the manufacturer and the materials used for the cylinder's construction. Additionally, it's important to note that gas cylinders should always be handled with care, and proper safety measures should be taken when transporting, storing, and using them.

Can be refilled at your local gas supply store.

Certainly! Here are some additional information about 9kg LPG gas cylinders:

• LPG is a flammable gas that is commonly used for cooking, heating, and other domestic and industrial applications. It is a mixture of propane and butane gases. And is stored in pressurized cylinders for ease of use and transport.
• 9kg LPG gas cylinders are a popular size for domestic use, particularly in households that do not have access to piped gas. They can typically last for several weeks or even months depending on usage.
• When a 9kg LPG gas cylinder is empty. It should be returned to an authorized LPG dealer or supplier for refilling or replacement. It is important not to attempt to refill the cylinder yourself or to use an unauthorized dealer, as this can be dangerous and may void the cylinder's warranty.
• To ensure safety when using LPG gas cylinders. It is important to follow proper handling and storage guidelines. This includes storing the cylinder in an upright position in a cool, dry, and well-ventilated area away from heat sources and flammable materials.
• When using the cylinder for cooking or heating. It is important to make sure that the regulator and hoses are properly connected and in good condition. Regular inspection and maintenance of the cylinder and associated equipment can help prevent leaks and other safety hazards.