1,4-Benzenedicarboxylic acid, dimethyl ester, polymer with 1,2-ethanediol is a complex organic compound that is formed through a polymerization reaction between dimethyl terephthalate (DMT) and ethylene glycol (EG). This polymer is commonly known as polyethylene terephthalate (PET), a widely used thermoplastic polymer. PET is renowned for its strength, flexibility, and resistance to both heat and impact, making it an ideal material for various applications such as food and beverage packaging, textiles, and engineering resins. The polymerization process involves the esterification of DMT with EG, leading to the formation of a linear polymer chain with repeating units of ethylene terephthalate. This process can occur through various methods, including melt polycondensation or ester interchange, and results in a polymer that exhibits high crystallinity and excellent barrier properties, which are crucial for its use in packaging applications.

9003-71-8

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Basic information
1. Product Name: 1,4-benzenedicarboxylic acid, dimethyl ester, polymer with 1,2-ethanediol
2. Synonyms: 1,4-benzenedicarboxylic acid, dimethyl ester, polymer with 1,2-ethanediol;1,4-Benzenedicarboxylic acid,dimethyl ester,polymer with 1,2-ethanediol
3. CAS NO:9003-71-8
4. Molecular Formula: MW:
5. Molecular Weight: 0
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: /
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 1,4-benzenedicarboxylic acid, dimethyl ester, polymer with 1,2-ethanediol(CAS DataBase Reference)
10. NIST Chemistry Reference: 1,4-benzenedicarboxylic acid, dimethyl ester, polymer with 1,2-ethanediol(9003-71-8)
11. EPA Substance Registry System: 1,4-benzenedicarboxylic acid, dimethyl ester, polymer with 1,2-ethanediol(9003-71-8)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 9003-71-8(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 9003-71-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,0 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 9003-71:
(6*9)+(5*0)+(4*0)+(3*3)+(2*7)+(1*1)=78
78 % 10 = 8
So 9003-71-8 is a valid CAS Registry Number.

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