1.1This specification covers a grade of cyclohexane identified as “cyclohexane 999.”

1.2The following applies to all specified limits in this standard: for purposes of determining conformance with this standard, 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 current OSHA regulations, supplier's Safety Data Sheets, and local regulations for all materials used in this specification.