68439-50-9 Usage
Chemical Properties
Laureth-4 is a defoamer, and it is non-toxic, odorless, non-irritating, and has a hard water and acid and alkali resistance, and a excellent compatibility. Also its antifoaming performance is quite good .
Uses
Laureth-4 can be used as an antistatic agent and emulsifier in cosmetics, but it has a high possibility of causing skin irritation and acne.
Flammability and Explosibility
Notclassified
Synthesis
KOH（1g） and dodecanol (24.8 g ) were heated to 85° C in the reactor, then vacuumed and filled with nitrogen for 2 to 3 times. The mixtrue was heated to 120 ℃～130℃, and added with ethylene oxide (EO), propylene oxide (PO) or their mixture. After the reaction is completed, the solution was neutralized with H2SO4(98%) and filtered to give Laureth-4.
Check Digit Verification of cas no
The CAS Registry Mumber 68439-50-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,4,3 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 68439-50:
(7*6)+(6*8)+(5*4)+(4*3)+(3*9)+(2*5)+(1*0)=159
159 % 10 = 9
So 68439-50-9 is a valid CAS Registry Number.
