GLOBAL LEADING MANUFACTURER OF MOLDMAKING CASTING MATERIALS FOR MORE THAN 10 YEARS
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How to distinguish the pure and the ungraded silicone oil?
There are three ways to distinguish the pure and the upgraded silicone oil.
1.check by your observation.
pure silicone oil is a transparent liquid without any smell,
but ungranded silicone oil smells bad and in turbid liquid form.
2.to test it by fire.
Take the pontil or glass rod to dip some liquid ,if it can be lighted and
fumed when burning,so the liquid is the ungraded silicone oil.which is a kind of
petrochmicals.
Pure silicone oil can not be fired,which is colorless,odorless,clear,nontoxic.the burning point of pure silicone oil is 320 degree
Celsius.but ungraded siliconoil is 100 degree Celsius.
3. Freezing point method
Take 100g of two kinds of silicone oil into refrigerator at the
same time,under temperature of -50 to -10 degree selsius for 2 hours,ungraded silicone oil will turn to turbid or frozen,while pure silicone oil is still clear and transparent as before,and it will not freeze until -50 degree Celsius.
2017-10-21