Polyester is a type of polymer that contains an ester functional group in its main chain. There are many different types of polyesters, but the term "polyester" usually refers to polyethylene terephthalate(PET). It is the abbreviation of a synthetic man-made polymer.
Polyester is known as the tofu of man-made fibers because of its many forms of appearance. It is a generic term for any fabric or textile, and polyester is one of the world's most popular textile fabrics and a source of material for a wide variety of clothing, used in many consumer and industrial applications.
Check Digit Verification of cas no
The CAS Registry Mumber 113669-95-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,6,6 and 9 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 113669-95: (8*1)+(7*1)+(6*3)+(5*6)+(4*6)+(3*9)+(2*9)+(1*5)=137 137 % 10 = 7 So 113669-95-7 is a valid CAS Registry Number.