Phosphonic acid bis-(1-methyl-butyl) ester, also known as bis(1-methylbutyl) hydrogen phosphonate, is an organic compound with the chemical formula C9H21O2P. It is a colorless liquid that is soluble in water and has a molecular weight of 200.24 g/mol. phosphonic acid bis-(1-methyl-butyl) ester is primarily used as a flame retardant, corrosion inhibitor, and as a component in various chemical formulations. It is known for its ability to chelate metal ions, which makes it effective in preventing corrosion in metal surfaces. Additionally, it is used in the production of lubricants, detergents, and as an intermediate in the synthesis of other phosphorus-containing compounds. The ester is also recognized for its low toxicity and environmental friendliness, making it a preferred choice in many industrial applications.
The CAS Registry Mumber 1809-16-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,0 and 9 respectively; the second part has 2 digits, 1 and 6 respectively. Calculate Digit Verification of CAS Registry Number 1809-16: (6*1)+(5*8)+(4*0)+(3*9)+(2*1)+(1*6)=81 81 % 10 = 1 So 1809-16-1 is a valid CAS Registry Number.