Phosphonic difluoride, (2-phenylethenyl)-, also known as 2-phenylethenylphosphonic difluoride, is an organophosphorus compound with the chemical formula C8H7F2OP. It is a colorless to pale yellow liquid that is soluble in organic solvents. Phosphonic difluoride, (2-phenylethenyl)- is primarily used as a reagent in organic synthesis, particularly in the formation of carbon-phosphorus bonds and as a precursor for the synthesis of various phosphorus-containing compounds. It is also employed in the preparation of agrochemicals and pharmaceuticals. Due to its reactivity and potential toxicity, it is important to handle this chemical with care, following appropriate safety guidelines.

705-90-8

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Basic information
1. Product Name: Phosphonic difluoride, (2-phenylethenyl)-
2. Synonyms:
3. CAS NO:705-90-8
4. Molecular Formula: C8H7F2OP
5. Molecular Weight: 188.114
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: Phosphonic difluoride, (2-phenylethenyl)-(CAS DataBase Reference)
10. NIST Chemistry Reference: Phosphonic difluoride, (2-phenylethenyl)-(705-90-8)
11. EPA Substance Registry System: Phosphonic difluoride, (2-phenylethenyl)-(705-90-8)
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: 705-90-8(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 705-90-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,0 and 5 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 705-90:
(5*7)+(4*0)+(3*5)+(2*9)+(1*0)=68
68 % 10 = 8
So 705-90-8 is a valid CAS Registry Number.

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