4730-79-4 Usage
General Description
Nonylphosphonic acid is a chemical compound that belongs to the group of organophosphorus compounds. It is a colorless to pale yellow liquid with a pungent odor and is commonly used as a corrosion inhibitor in metalworking fluids, as well as a chelating agent in various industrial processes. Nonylphosphonic acid is known for having strong binding properties and is effective at preventing the formation of rust and scale on metal surfaces. It is also used in the production of surfactants and dispersing agents, as well as in the formulation of some agricultural chemicals. However, it is important to handle nonylphosphonic acid carefully, as it is considered a hazardous substance with potential health and environmental risks.
Check Digit Verification of cas no
The CAS Registry Mumber 4730-79-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,3 and 0 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4730-79:
(6*4)+(5*7)+(4*3)+(3*0)+(2*7)+(1*9)=94
94 % 10 = 4
So 4730-79-4 is a valid CAS Registry Number.
4730-79-4Relevant articles and documents
Synthesis of Long-Chain n-Alkylphosphonic Acids by Phosphonylation of Alkyl Bromides with Red Phosphorus and Superbase under Micellar/Phase Transfer Catalysis
Kuimov, Vladimir A.,Malysheva, Svetlana F.,Belogorlova, Natalia A.,Albanov, Alexander I.,Gusarova, Nina K.,Trofimov, Boris A.
supporting information, p. 1596 - 1602 (2021/03/03)
Long-chain n-Alkylphosphonic acids, AlkP(O)(OH)2, are synthesized in up to 91 % yield (mostly 40–60 %) by straightforward phosphonylation of alkyl bromides (AlkBr, Alk=C4–C18) with red phosphorus (Pn) in the multiphase KOH/H2O/toluene system in the presence of 2–10 mol % of cetyltrimethylammonium bromide (CTAB), acting as a micellar/phase transfer catalyst and as a generator/transporter of superbasic hydroxide anions, the intermediate potassium phosphinates being in situ oxidized/neutralized by nitric acid. The key steps of the phosphonylation mechanism are the P?P bond cleavage of Pn polymeric molecules by superbasic ?OH anions, dissolved in the CTAB micelles, and phase transfer of polyphosphide anions to the organic phase and their alkylation with AlkBr.
