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68909-20-6

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68909-20-6 Usage

General Description

Silica, also known as silicon dioxide, is a naturally occurring chemical compound composed of silicon and oxygen, with the chemical formula SiO2. It is most commonly found in nature as quartz and in various living organisms. In its many forms, including crystalline silica and amorphous silica, it is a major component of sand and other rocks and minerals. Silica is used extensively in many industries such as glassmaking, ceramics, construction, and in the production of silicon and silicon-based technology. Despite its widespread use, inhalation of small silica particles can lead to serious health issues such as silicosis and lung cancer.

Check Digit Verification of cas no

The CAS Registry Mumber 68909-20-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,9,0 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 68909-20:
(7*6)+(6*8)+(5*9)+(4*0)+(3*9)+(2*2)+(1*0)=166
166 % 10 = 6
So 68909-20-6 is a valid CAS Registry Number.

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