Discuss why polyester is considered a cancer causing fibre? Comment.

Explanation

### Step-by-Step Solution:

1. **Introduction to Polyester**:
- Polyester is a type of synthetic fiber commonly used in textiles and various products. It is known for its durability and resistance to wrinkles and shrinking.

2. **Catalyst Used in Polyester Production**:
- The production of polyester involves the use of a catalyst. In this case, the catalyst used is called antimony, which is represented by the symbol Sb.

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