1.1This specification covers toluene for toluene diisocyanate (TDI) feedstock.

1.2The following applies to all specified limits in this specification: for purposes of determining conformance with this specification, an observed value or a calculated value shall be rounded off to the nearest unit in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29.

1.3Consult OSHA regulations and supplier's Safety Data Sheets for all materials used in this specification.

1.4The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.