21991-63-9 Usage
Type of compound
Heterocyclic compound
Family
Benzotriazole family
Functional groups
Contains an amino group and a methyl group attached to the benzene ring
Industrial applications
Commonly used as a corrosion inhibitor
Industries
Aerospace and automotive industries
Function
Forms a protective layer on metal surfaces to prevent corrosion and extend the lifespan of the metal
Additional uses
Additive in antifreeze, hydraulic fluids, and engine coolant to inhibit metal corrosion
Safety precautions
Handle with care, as it can be harmful if ingested or inhaled, and can cause skin and eye irritation upon contact
Check Digit Verification of cas no
The CAS Registry Mumber 21991-63-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,9 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21991-63:
(7*2)+(6*1)+(5*9)+(4*9)+(3*1)+(2*6)+(1*3)=119
119 % 10 = 9
So 21991-63-9 is a valid CAS Registry Number.