922-84-9 Usage
General Description
1,1,2-Ethanetricarboxylic acid, also known as citric acid, is a weak organic acid commonly found in citrus fruits and used as a flavoring and preservative in food and beverages. It is a tricarboxylic acid with the chemical formula C6H8O7 and is classified as a natural acidic compound. Citric acid has a sour taste and is often used as a natural preservative in food and drinks, as well as a cleaning agent and water softener. It is also used as a chelating agent in various industrial and pharmaceutical applications. Additionally, citric acid is an important intermediate in the citric acid cycle, which plays a crucial role in the production of energy in living organisms.
Check Digit Verification of cas no
The CAS Registry Mumber 922-84-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,2 and 2 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 922-84:
(5*9)+(4*2)+(3*2)+(2*8)+(1*4)=79
79 % 10 = 9
So 922-84-9 is a valid CAS Registry Number.
InChI:InChI=1/C5H6O6/c6-3(7)1-2(4(8)9)5(10)11/h2H,1H2,(H,6,7)(H,8,9)(H,10,11)
922-84-9Relevant articles and documents
HPLC studies on the photochemical formation of free radicals from malonic acid
Szalai, Istvan,Foersterling, Horst-Dieter,Noszticzius, Zoltan
, p. 3118 - 3120 (2007/10/03)
In the Belousov Zhabotinsky reaction, malonyl radicals formed during the oxidation of malonic acid by Ce4+ play an important role in the mechanism of the negative feedback loop. In the past, we have analyzed the end products in the Ce4+-malonic acid reaction applying HPLC technique. For comparison, we generated malonyl radicals by UV irradiation of solutions of malonic acid and we identified the reaction products. Two of these are the same as in the Ce4+-malonic acid reaction, but some additional products are also formed. To explain our experimental results, a new reaction path is proposed where malonyl radicals and hydrogen atoms are the first intermediates in the photochemical decomposition of the malonic acid. Mechanistic differences between this photochemical decomposition and the Ce4+-malonic acid reaction are also discussed.
