853-35-0 Usage
Chemical Properties
solid
Purification Methods
Separate it from insoluble impurities by continuous extraction with water. Recrystallise it twice from hot water and dry it under vacuum. [Beilstein 11 II 195, 11 III 634.]
Check Digit Verification of cas no
The CAS Registry Mumber 853-35-0 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,5 and 3 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 853-35:
(5*8)+(4*5)+(3*3)+(2*3)+(1*5)=80
80 % 10 = 0
So 853-35-0 is a valid CAS Registry Number.
InChI:InChI=1/C14H8O8S2.2Na/c15-12-7-3-1-2-4-8(7)13(16)11-9(12)5-6-10(23(17,18)19)14(11)24(20,21)22;;/h1-6H,(H,17,18,19)(H,20,21,22);;/q;2*+1/p-2
853-35-0Relevant articles and documents
Process for the manufacture of anthraquinonesulphonic acid
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, (2008/06/13)
Process for the manufacture of practically mercury-free anthraquinonesulphonic acids, characterized in that anthraquinone is sulphonated with sulphuric acid containing SO3 in the presence of catalysts containing mercury, at elevated temperature, the sulphonation mixture, if appropriate after dilution with water, is subsequently treated with an inorganic or organic compound of divalent sulphur and thereafter, if appropriate following dilution with water, the mercury compounds present in an insoluble form are separated off and the anthraquinonesulphonic acids are then isolated in a known manner.
