Tris(2,5-di-t-butyl-4-hydroxypphenyl) phosphite, also known as Irgafos 168, is a high-performance, non-discoloring, and non-halogenated phosphite antioxidant and stabilizer used in various applications. It is a white crystalline powder with a molecular formula of C42H69O3P and a molecular weight of 647.92 g/mol. This chemical is widely used in the plastics, rubber, and adhesives industries to protect materials from oxidative degradation, heat, and UV light, thereby extending their service life and maintaining their physical properties. It is particularly effective in polyolefins, styrenics, and engineering plastics, and is also used as a synergist with other antioxidants to enhance their performance. Tris(2,5-di-t-butyl-4-hydroxypphenyl) phosphite is known for its excellent compatibility with various polymers and its ability to prevent discoloration, making it a preferred choice in applications where color stability is crucial.

7390-40-1

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Basic information
1. Product Name: Tris(2,5-di-t-butyl-4-hydroxypphenyl) phosphite
2. Synonyms: Phosphorous acid tris(2,5-di-tert-butyl-4-hydroxyphenyl) ester;Tris(2,5-di-t-butyl-4-hydroxypphenyl) phosphite
3. CAS NO:7390-40-1
4. Molecular Formula: C42H63O6P
5. Molecular Weight: 694.92
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 7390-40-1.mol
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: Tris(2,5-di-t-butyl-4-hydroxypphenyl) phosphite(CAS DataBase Reference)
10. NIST Chemistry Reference: Tris(2,5-di-t-butyl-4-hydroxypphenyl) phosphite(7390-40-1)
11. EPA Substance Registry System: Tris(2,5-di-t-butyl-4-hydroxypphenyl) phosphite(7390-40-1)
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: 7390-40-1(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 7390-40-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,3,9 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 7390-40:
(6*7)+(5*3)+(4*9)+(3*0)+(2*4)+(1*0)=101
101 % 10 = 1
So 7390-40-1 is a valid CAS Registry Number.

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