6528-53-6 Usage
Purification Methods
Crystallise the tetrasulfonic acid from water. The tetra-Na salt crystallises also from H2O. [Tietz & Bayer Justus Liebigs Ann Chem 540 189 1939, Beilstein 11 III 486.]
Check Digit Verification of cas no
The CAS Registry Mumber 6528-53-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,2 and 8 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6528-53:
(6*6)+(5*5)+(4*2)+(3*8)+(2*5)+(1*3)=106
106 % 10 = 6
So 6528-53-6 is a valid CAS Registry Number.
InChI:InChI=1/C16H10O12S4.2Ca/c17-29(18,19)11-5-13(31(23,24)25)9-3-4-10-14(32(26,27)28)6-12(30(20,21)22)8-2-1-7(11)15(9)16(8)10;;/h1-6H,(H,17,18,19)(H,20,21,22)(H,23,24,25)(H,26,27,28);;/q;2*+2/p-4
