Tris(2-methyl-5-tert-butylphenyl)phosphin, also known as Irgazin, is an organophosphorus compound characterized by its chemical formula C27H33P. It is a white crystalline solid with a molecular weight of 390.54 g/mol. Tris(2-methyl-5-tert.-butylphenyl)phosphin is widely used as an antioxidant and stabilizing agent in various industrial applications, including the stabilization of polyolefins, polyvinyl chloride, and other polymers. It is particularly effective in preventing the degradation of polymers caused by heat, light, and oxygen exposure. Tris(2-methyl-5-tert-butylphenyl)phosphin is also known for its low volatility and excellent color stability, making it a preferred choice in applications where maintaining the color and integrity of materials over time is crucial.

66417-48-9

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Basic information
1. Product Name: Tris(2-methyl-5-tert.-butylphenyl)phosphin
2. Synonyms:
3. CAS NO:66417-48-9
4. Molecular Formula:
5. Molecular Weight: 472.694
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: Tris(2-methyl-5-tert.-butylphenyl)phosphin(CAS DataBase Reference)
10. NIST Chemistry Reference: Tris(2-methyl-5-tert.-butylphenyl)phosphin(66417-48-9)
11. EPA Substance Registry System: Tris(2-methyl-5-tert.-butylphenyl)phosphin(66417-48-9)
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: 66417-48-9(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 66417-48-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,4,1 and 7 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 66417-48:
(7*6)+(6*6)+(5*4)+(4*1)+(3*7)+(2*4)+(1*8)=139
139 % 10 = 9
So 66417-48-9 is a valid CAS Registry Number.

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