ASTM D391 Standard Specification for Creosote-Coal Tar Solution
3. Composition and Properties
3.1 Creosote-coal tar solution shall be a pure coal tar product derived entirely from tar produced by the carbonization of bituminous coal. It shall be either a coal tar distillate or a solution of coal tar in coal tar distillate, and shall conform with the requirements for the respective grades specified in Table 1.

4. Sampling and Test Methods
4.1 The material shall be sampled and the properties enumerated in this specification shall be determined in accordance with the following methods:
4.1.1 Sampling - Test Methods D38.

4.1.2 Water - Test Method D370, or as an alternative method, Test Method D95.

4.1.3 Xylene Insoluble Matter - Test Method D367.

4.1.4 Specific Gravity - Test Method D368.

4.1.5 Distillation - Test Method D246.

4.1.6 Specific Gravity of Fractions - Test Method D369.

4.1.7 Coke Residue - Test Method D168.

4.1.8 Volume and Specific Gravity Correction - Test Method D347.

5. Keywords
5.1 coal tar; creosote