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toluene-3,4-disulfonic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

74753-19-8

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74753-19-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74753-19-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,7,5 and 3 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 74753-19:
(7*7)+(6*4)+(5*7)+(4*5)+(3*3)+(2*1)+(1*9)=148
148 % 10 = 8
So 74753-19-8 is a valid CAS Registry Number.

74753-19-8Downstream Products

74753-19-8Relevant academic research and scientific papers

Kinetics of hydrolysis of aromatic mono- and disulfonyl chlorides

Sanecki, Przemyslaw,Rokaszewski, Edward

, p. 2263 - 2267 (2007/10/02)

A continuous polarografic method of recording instantaneous concentrations of - SO2Cl groups in an aqueous acetic acid system containing CH3CO2Na has been elaborated.Ten model monosulfonyl chlorides underwent hydrolysis according to pseudo-first order kinetics (20percent H2O, 80percent v.v.CH3CO2H, 0.5 mol/dm3 CH3CO2Na).Plots of hydrolysis for seven disulfonyl dichlorides with different number of - CH3 groups have been determined.Pseudo-first order rate constants for two consecutive reactions of hydrolysis (k1 and k2) have been computed and the influence of -SO2Cl and -SO3- groups on the reactivity of the second group - SO2Cl has been discussed.The mechanism of nucleophilic substitution has also been discussed.

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