ASTM D848 applies to the specification of materials referenced in 1.1. It can also be used as an internal quality control tool and for development or research work.
Meaning and use

5.1 This test method is applicable to the specification of the material referenced in 1.1. It can also be used as an internal quality control tool and for development or research work.

5.2 The color produced in the acid layer indicates that impurities would cause discoloration of the material if sulfonated.

ASTM D848-2018 Standard Test Method for Pickling Colors of Industrial Aromatics

Step 1: Scope

1.1 The test method includes the determination of benzene, toluene, xylene, refined solvent naphtha and similar industrial aromatics for pickling color.

1.2 Values expressed in SI units shall be regarded as standard values. No other units of measurement are included in this standard.

1.3 This standard is not intended to address all safety concerns, if any, associated with its use. It is the responsibility of users of this standard to establish appropriate safety, health and environmental practices and to determine the applicability of regulatory restrictions prior to use. For specific hazard descriptions, see sections 8 and 12.1.

1.4 This international standard is based on internationally recognized standardization principles established in the “Decision on Principles for the Development of International Standards, Guidelines and Recommendations” issued by the Committee on Technical Barriers to Trade (TBT) of the World Trade Organization.