4,4'-Ethylenebis(2-t-butyl-5-methylphenol), also known as ethylbis(3,5-di-t-butyl-4-hydroxybenzyl)amine or simply as Ionol, is a chemical compound with the molecular formula C22H34O2. It is a white crystalline solid that is widely used as an antioxidant and a UV stabilizer in various industrial applications, including plastics, rubber, and adhesives. 4,4'-ethylidenebis(2-t-butyl-5-methylphenol) is particularly effective in preventing the degradation of materials exposed to heat, light, and oxygen, thereby extending their service life and maintaining their physical properties. Ionol is also known for its low volatility and excellent compatibility with a broad range of polymers, making it a preferred choice in the industry for its stability and performance.

3772-18-7

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Basic information
1. Product Name: 4,4'-ethylidenebis(2-t-butyl-5-methylphenol)
2. Synonyms: 4,4'-ethylidenebis(2-t-butyl-5-methylphenol)
3. CAS NO:3772-18-7
4. Molecular Formula:
5. Molecular Weight: 354.533
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: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 4,4'-ethylidenebis(2-t-butyl-5-methylphenol)(CAS DataBase Reference)
10. NIST Chemistry Reference: 4,4'-ethylidenebis(2-t-butyl-5-methylphenol)(3772-18-7)
11. EPA Substance Registry System: 4,4'-ethylidenebis(2-t-butyl-5-methylphenol)(3772-18-7)
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: 3772-18-7(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 3772-18-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,7 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 3772-18:
(6*3)+(5*7)+(4*7)+(3*2)+(2*1)+(1*8)=97
97 % 10 = 7
So 3772-18-7 is a valid CAS Registry Number.

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