2,2'-Bis-(p-toluolsulfonyloxy)-benzophenon, also known as 4,4'-Bis(4-methylbenzenesulfonyloxy)benzophenone, is a chemical compound with the molecular formula C21H18O6S2. It is a white crystalline solid that is soluble in common organic solvents such as ethanol, acetone, and dichloromethane. 2,2'-Bis-(p-toluolsulfonyloxy)-benzophenon is primarily used as a photoinitiator in the polymerization of various monomers, particularly in the production of polymers for coatings, inks, and adhesives. It is known for its high efficiency and low odor, making it a preferred choice in applications where these properties are desirable. The compound is also characterized by its stability and ability to initiate free radical polymerization upon exposure to ultraviolet light, which is crucial for its applications in the field of photopolymerization.

864-32-4

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Basic information
1. Product Name: 2,2'-Bis-(p-toluolsulfonyloxy)-benzophenon
2. Synonyms:
3. CAS NO:864-32-4
4. Molecular Formula:
5. Molecular Weight: 522.599
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: 2,2'-Bis-(p-toluolsulfonyloxy)-benzophenon(CAS DataBase Reference)
10. NIST Chemistry Reference: 2,2'-Bis-(p-toluolsulfonyloxy)-benzophenon(864-32-4)
11. EPA Substance Registry System: 2,2'-Bis-(p-toluolsulfonyloxy)-benzophenon(864-32-4)
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: 864-32-4(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 864-32-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,6 and 4 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 864-32:
(5*8)+(4*6)+(3*4)+(2*3)+(1*2)=84
84 % 10 = 4
So 864-32-4 is a valid CAS Registry Number.

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