Hydrogen fluoride (HF) is a colorless, corrosive gas with a pungent odor, known for its ability to react with glass and other silicates. A 37% solution of hydrogen fluoride refers to a mixture where 37% of the solution's mass is HF, with the remainder being water. This concentrated form is highly reactive and is used in various industrial applications, such as the production of fluoropolymers, etching glass, and metal cleaning. It is also used in the electronics industry for etching silicon wafers. Due to its high reactivity and potential for severe health hazards, including severe burns and systemic toxicity, it is crucial to handle hydrogen fluoride with extreme caution, using appropriate safety equipment and procedures.
The CAS Registry Mumber 7360-26-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,3,6 and 0 respectively; the second part has 2 digits, 2 and 6 respectively. Calculate Digit Verification of CAS Registry Number 7360-26: (6*7)+(5*3)+(4*6)+(3*0)+(2*2)+(1*6)=91 91 % 10 = 1 So 7360-26-1 is a valid CAS Registry Number.