Phosphoric acid ethyl ester diheptyl ester, also known as ethyl diheptyl phosphonate, is a phosphorus-containing organic compound with the chemical formula C17H37O4P. It is a colorless liquid at room temperature and is soluble in most organic solvents. phosphoric acid ethyl ester diheptyl ester is primarily used as a plasticizer, flame retardant, and lubricant additive in various industrial applications. It is also employed as a stabilizer in the production of PVC and as a component in some hydraulic fluids. The ester is synthesized by reacting phosphoric acid with ethyl alcohol and heptyl alcohol, resulting in a product that offers improved thermal stability and resistance to hydrolysis compared to other esters.

4705-73-1

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Basic information
1. Product Name: phosphoric acid ethyl ester diheptyl ester
2. Synonyms:
3. CAS NO:4705-73-1
4. Molecular Formula:
5. Molecular Weight: 322.425
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: phosphoric acid ethyl ester diheptyl ester(CAS DataBase Reference)
10. NIST Chemistry Reference: phosphoric acid ethyl ester diheptyl ester(4705-73-1)
11. EPA Substance Registry System: phosphoric acid ethyl ester diheptyl ester(4705-73-1)
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: 4705-73-1(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4705-73-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,0 and 5 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 4705-73:
(6*4)+(5*7)+(4*0)+(3*5)+(2*7)+(1*3)=91
91 % 10 = 1
So 4705-73-1 is a valid CAS Registry Number.

4705-73-1Upstream product

4705-73-1Downstream Products

4621-50-5 Phosphorsaeure-triheptylester

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