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       abstraction
　　The specification includes toluene for toluene diisocyanate (TDI) feedstock. The purity, pickling color, appearance of benzene, nano-solvents, ethylbenzene, xylene and toluene should be tested to meet the specified requirements.
　　This summary is a brief overview of the reference standards. It is for reference only and is not an official part of the standard; Reference is required to the full text of the standard itself for its use and application. ASTM makes no warranties of any kind, express or implied, and does not represent that the content of this abstract is accurate, complete or new.
　　ASTM D5606-2017 Standard Specification for Toluene for Toluene Diisocyanate (TDI) Raw Materials
　　ASTM D5606-2017 Standard Specification for Toluene for Toluene Diisocyanate (TDI) Raw MaterialsStep 1: Scope
　　1.1 This specification includes toluene from toluene diisocyanate (TDI) feedstock.
　　1.2 The following applies to all specified limits in this specification: In order to determine consistency with this specification, observed or calculated values shall be rounded to the nearest unit of the last right-handed digit used to represent the specification limit, following the rounding method of Practice E29.
　　1.3 For all materials used in this specification, please refer to OSHA regulations and the supplier’s safety data sheet.
　　1.4 Values expressed in SI units shall be regarded as standard values. The values given in parentheses are for reference only.
　　1.5 The 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.