39360-54-8 Usage
Chemical Properties
A typical commercial novolak epoxy resin has an average molecular weight of
650 and contains about 3.6 epoxy groups per molecule. Because of their
multifunctionality, the novolak epoxy resins give, on curing, more tightly
cross-linked products than the bisphenol A-based resins. This results in
improved elevated temperature performance and chemical resistance.
Preparation
Novolak resins are low molecular weight polymers consisting
of phenolic nuclei linked in the 0- and p- positions by methylene
groups. They may be epoxidized through the phenolic hydroxyl groups by
treatment with epichlorhydrin:
Check Digit Verification of cas no
The CAS Registry Mumber 39360-54-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,3,6 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 39360-54:
(7*3)+(6*9)+(5*3)+(4*6)+(3*0)+(2*5)+(1*4)=128
128 % 10 = 8
So 39360-54-8 is a valid CAS Registry Number.