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75487-44-4

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75487-44-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75487-44-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,4,8 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 75487-44:
(7*7)+(6*5)+(5*4)+(4*8)+(3*7)+(2*4)+(1*4)=164
164 % 10 = 4
So 75487-44-4 is a valid CAS Registry Number.

75487-44-4Relevant articles and documents

Head group specificity of novel functionalized surfactants: Synthesis, self-assembly and calcium tolerance

Sarkar, Deboleena,Shukla, Ravi Kant,Gadgil, Vijay,Pramanik, Amitava

, p. 5925 - 5931 (2014)

The present work describes the synthesis, characterization and application of functionalized surfactants derived through simple organic reaction steps. These surfactants have been particularly tailor made to resist hardness due to calcium ions in water. It is unique of its kind because here the surfactants have an analogous hydrophobic chain but differ structurally in the composition of the head groups in terms of the position of attachment of the chain. The effect of this small variability in the head group on the surfactant property, adsorption, self assembly and calcium tolerance behaviour has been studied in detail. This kind of phenol-keto surfactants has not been reported before. It was also found that one of the surfactants was more tolerant towards Ca2+ion than the other. The individual packing behaviour of the surfactants at the air-water interface has been projected to cause this difference which is very interesting.

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