API MPMS Chapter 11.5 (R2020)

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These intraconversion tables are applicable to all crude oils, petroleum products, and petrochemicals. These standards are intended for application to bulk liquid quantities.

Part 1–Conversions of API Gravity at 60°F

Provides implementation procedures for conversion of API gravity at 60°F to equivalent densities in both in vacuo and in air values. This standard gives the following equivalents for any value of API gravity at 60°F:

• relative density at 60°F (old Table 3);
• absolute density at 60°F;
• absolute density at 15°C (old Table 3);
• pounds per U.S. gallon at 60°F in vacuo and in air (old Table 8);
• U.S. gallons per pound at 60°F in vacuo and in air (old Table 8);
• short tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 9);
• U.S. gallons per short ton at 60°F in vacuo and in air (old Table 10);
• short tons per barrel at 60°F in vacuo and in air (old Table 9);
• barrels per short ton at 60°F in vacuo and in air (old Table 10);
• long tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 11);
• U.S. gallons per long ton at 60°F in vacuo and in air (old Table 12);
• long tons per barrel at 60°F in vacuo and in air (old Table 11);
• barrels per long ton at 60°F in vacuo and in air (old Table 12);
• metric tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 13);
• metric tons per barrel at 60°F in vacuo and in air (old Table 13);
• barrels per metric ton at 60°F in vacuo and in air;
• cubic meters per short ton at 15°C in vacuo and in air (old Table 14);
• cubic meters per long ton at 15°C in vacuo and in air (old Table 14).

While not related to API gravity, the following are included for user convenience:

• U.S. gallons at 60°F to litres at 15°C (old Table 4);
• barrels at 60°F to litres at 15°C (old Table 4);

Part 2–Conversions for Relative Density (60/60°F)

Provides implementation procedures for conversion of relative density (60/ 60°F) to equivalent densities in both in vacuo and in air values. This standard gives the following equivalents for any value of relative density (60/60°F):

• API gravity at 60°F (old Table 21);
• absolute density at 60°F;
• absolute density at 15°F (old Table 21);
• pounds per U.S. gallon at 60°F in and in air (old Table 26);
• U.S. gallons per pound at 60°F in vacuo and in air (old Table 26);
• short tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 27);
• U.S. gallons per short ton at 60°F in vacuo and in air (old Table 28);
• short tons per barrel at 60°F in vacuo and in air (old Table 27);
• barrels per short ton at 60°F in vacuo and in air (old Table 28);
• long tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 29);
• U.S. gallons per long ton at 60°F in vacuo and in air (old Table 30);
• long tons per barrel at 60°F in vacuo and in air (old Table 29);
• barrels per long ton at 60°F in vacuo and in air (old Table 30);
• metric tons per 1000 U.S. gallons at 60°F in vacuo and in air;
• metric tons per barrel at 60°F in vacuo and in air;
• barrels per metric ton at 60°F in vacuo and in air;
• cubic meters per short ton at 15°C in vacuo and in air (old Table 31);
• cubic meters per long ton at 15°C in vacuo and in air (old Table 31).

While not related to relative density, the following are included for user convenience:

• U.S. gallons at 60°F to litres at 15°C (old Table 22);
• barrels at 60°F to litres at 15°C (old Table 22, Table 52).

Part 3–Conversions for Absolute Density at 15°C

Provides implementation procedures for conversion of absolute density at 15°C to equivalent densities in both in vacuo and in air values. This standard gives the following equivalents for any value of absolute density at 15°C:

• relative density at 15°C;
• absolute density at 60°F;
• relative density at 60°F (old Table 51);
• API gravity at 60°F (old Table 51); – density at 15°C (similar to old Table 56);
• conversion of apparent density at 15°C to absolute density at 15°C;
• cubic meters per metric ton at 15°C in vacuo and in air (similar to old Table 56);
• cubic meters per short ton at 15°C in vacuo and in air;
• cubic meters per long ton at 15°C in vacuo and in air;
• pounds per U.S. gallon at 60°F in vacuo and in air;
• U.S. gallons per pound at 60°F in vacuo and in air;
• short tons per 1000 litres (cubic meters) at 15°C in vacuo and in air (old Table 57);
• short tons per 1000 U.S. gallons at 60°F in vacuo and in air;
• U.S. gallons per short ton at 60°F in vacuo and in air;
• short tons per barrel at 60°F in vacuo and in air;
• barrels per short ton at 60°F in vacuo and in air;
• long tons per 1000 litres (cubic meters) at 15°C in vacuo and in air (old Table 57);
• U.S. gallons per metric ton at 60°F in vacuo and in air (old Table 58);
• barrels per metric ton at 60°F in vacuo and in air (old Table 58);
• long tons per 1000 U.S. gallons at 60°F in vacuo and in air;
• U.S. gallons per long ton at 60°F in vacuo and in air;
• long tons per barrel at 60°F in vacuo and in air;
• barrels per long ton at 60°F in vacuo and in air.

While not related to relative density, the following are included for user convenience:

• litres at 15°C to U.S. gallons at 60°F;
• cubic meters at 15°C to barrels at 60°F (old Table 52).

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