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Polypropylene (CAS number 9003-07-0) is a thermoplastic polymer that has various effects and uses. Here are some of its effects:

1. High strength and durability: Polypropylene is known for its high tensile strength and durability. It can withstand heavy loads and is resistant to impact and fatigue, making it suitable for applications that require strength and toughness.

2. Chemical resistance: Polypropylene is resistant to many chemicals, including acids, alkalis, and solvents. This property makes it suitable for use in chemical storage tanks, pipes, and other equipment that come into contact with corrosive substances.

3. Heat resistance: Polypropylene has a high melting point and good heat resistance. It can withstand temperatures up to approximately 160°C (320°F) without deforming or losing its properties. This makes it suitable for applications that involve high-temperature environments.

4. Lightweight: Polypropylene is a lightweight material, which makes it ideal for applications where weight reduction is important. It is commonly used in automotive components, packaging materials, and consumer products where weight savings are desired.

5. Electrical insulation: Polypropylene has good electrical insulation properties, making it suitable for use in electrical and electronic components. It can be used as an insulating material in cables, connectors, and circuit boards.

6. Moisture resistance: Polypropylene is resistant to moisture and has low water absorption properties. This makes it suitable for applications that require resistance to moisture, such as outdoor furniture, automotive parts, and marine equipment.

It is important to note that the effects and uses of polypropylene can vary depending on the specific application and formulation used. It is generally considered safe for use in appropriate amounts. However, as with any material, it is recommended to follow proper handling and safety guidelines when working with polypropylene.