Tests
(ASTM METHOD)
|
Definition
|
|
Melting Points
| D-87 |
Cooling Curve |
| D-127 |
Drop Point |
| D-938 |
Congealing |
| AMP |
Melt Point |
|
D-87 is used for paraffin waxes only;
D-127 for micro waxes and wax blends;
D-938 for petrolatums
AMP=D-87 + 3 ºF.
|
|
Penetration
D-1321 Needle Penetration
|
A measure of wax Hardness; higher penetration value indicates a softer wax. Penetration temperatures normally used are 77ºF, 100ºF and 110ºF. If no temperature is specified you may assume 77ºF. |
|
Viscosity
| D-88 |
Saybolt |
| D-445 |
Kinematic |
| D-2161 |
Conversions |
|
A measure of fluidity or pumpability of liquid wax usually determined at 210ºF. The D-445 method is normally used and the results converted to SUS. Paraffin waxes typically test 40 SUS and micros are usually 75 SUS and above. |
|
Oil Content
D-721 Oil Content
|
That component of a wax or waxblends which is extractable with MEK. Low oil content (<1.0%) indicates fully refined wax, higher oil contents indicate semi-refined (>1.0%) and scale grade (>2.0%). |
|
Color
D-1500
D-156 Saybolt
|
D-156 method is used for testing water-white paraffin; D-1500 test is used for waxes having a yellow and darker color - typically micros. |
|
Odor
D-1833, Odor Rating
D-1832, Peroxide No.
|
D-1833 is a numerical rating for odor intensity;
D-1832 is quantitative measure of oxidation. |
|
Block Point
D-1465, Block Temperature
|
The Minimum temperature at which two pieces of waxed paper stick together when in intimate contact. |
| Gas Chromatography |
An instrumental method of determining carbon number distribution of components in a wax by distillation from a substrate. |
