How do you convert specific gravity to API gravity?
How do you convert specific gravity to API gravity?
How to estimate API gravity?
- Divide 141.5 by the specific gravity of the liquid.
- Subtract 131.5 from the resultant to obtain the API gravity.
Is API the same as specific gravity?
API gravity is thus an inverse measure of a petroleum liquid’s density relative to that of water (also known as specific gravity). It is used to compare densities of petroleum liquids. For example, if one petroleum liquid is less dense than another, it has a greater API gravity.
What is the relationship between density specific gravity and API?
API gravity is another expression of this measurement that uses the Density/Specific gravity for its conversion. The higher the api the less dense the sample is. For example at 60°F: an api of 10.0 is equal to 1.0000 g/cm3. While an api of 80.0 is equal to 0.6684 g/cm3.
What is API gravity formula?
API gravity is gradated in degrees on a hydrometer instrument and was designed so that most values would fall between 10° and 70° API gravity. The arbitrary formula used to obtain this effect is: API gravity = (141.5/SG at 60 degF) – 131.5, where SG is the specific gravity of the fluid.
What is the difference between API gravity and density?
API gravity is measured as the inverse of the density of a petroleum liquid relative to water. The higher the API gravity, the lower the density of the petroleum liquid, so light oils have high API gravities.
How do you find the density of an object with specific gravity?
Remember, finding the density involves dividing the mass by the volume. If the mass is 36 grams and the volume is 3 mililiters, then the density of the object is 12 grams per milliliter. That means that the specific gravity will be 12. That’s greater than one.
How do you find API density?
The formula for API gravity is API = (141.5/SG) -131.5 where SG is the specific gravity of the petroleum liquid being measured. For example, for an API gravity of 50, add 131.5 to obtain 181.5.
Is API gravity the same as density?
API gravity is a commonly used index of the density of a crude oil or refined products. API stands for the American Petroleum Institute, which is the industry organization that created this measure. A crude oil will typically have an API between 15 and 45 degrees. Higher API indicates a lighter (lower density) crude.
What is the density of oil if its API gravity is equivalent to 40?
API Gravity to Specific Gravity and Density Chart:
| Degree API. | Specific Gravity. | Density (kg/m3). |
|---|---|---|
| 40 | 0,825 | 825,073 |
| 41 | 0,820 | 820,290 |
| 42 | 0,816 | 815,562 |
| 43 | 0,811 | 810,888 |
Is specific gravity the same as density?
Density is defined as mass per unit volume. It has the SI unit kg m-3 or kg/m3 and is an absolute quantity. Specific gravity is the ratio of a material’s density with that of water at 4 °C (where it is most dense and is taken to have the value 999.974 kg m-3). It is therefore a relative quantity with no units.
