2,5,3',4'-Tetramethoxy-benzophenone is an organic compound with the chemical formula C17H18O5. It is a derivative of benzophenone, featuring four methoxy groups attached to the benzene rings. This white crystalline solid is known for its UV-absorbing properties, making it a valuable component in sunscreens and other cosmetic products. It is also used as a photostabilizer in the plastics industry to protect materials from degradation caused by exposure to sunlight. The compound is characterized by its melting point of approximately 90°C and is insoluble in water but soluble in organic solvents. Its chemical structure, with the methoxy groups providing electron-donating properties, contributes to its stability and reactivity in various chemical processes.

4038-18-0

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Basic information
1. Product Name: 2,5,3',4'-tetramethoxy-benzophenone
2. Synonyms:
3. CAS NO:4038-18-0
4. Molecular Formula:
5. Molecular Weight: 302.327
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: 2,5,3',4'-tetramethoxy-benzophenone(CAS DataBase Reference)
10. NIST Chemistry Reference: 2,5,3',4'-tetramethoxy-benzophenone(4038-18-0)
11. EPA Substance Registry System: 2,5,3',4'-tetramethoxy-benzophenone(4038-18-0)
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: 4038-18-0(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4038-18-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,0,3 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4038-18:
(6*4)+(5*0)+(4*3)+(3*8)+(2*1)+(1*8)=70
70 % 10 = 0
So 4038-18-0 is a valid CAS Registry Number.

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