The ASTM D5309 standard specification covers a grade of cyclohexane known as “cyclohexane 999”.
abstraction
The specification covers a class of cyclohexane known as “cyclohexane 999”. The material shall conform to the required purity, benzene content, n-hexane content, methylcyclohexane content, methylcyclopentane content, sulfur content, appearance, color and distillation range.

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ASTM D5309-2017 Standard Specification for Cyclohexane 999

Step 1: Scope

1.1 This specification covers the cyclohexane grade referred to as “cyclohexane 999”.

1.2 The following applies to all specified limits in this standard: In order to determine consistency with this standard, observed or calculated values should be “rounded” to “nearest unit” in the last right-handed digit used in the expression of the specification in accordance with the rounding method of Practice E29.

1.3 Review current OSHA regulations, supplier safety data sheets, and local regulations for all materials used in this specification.

ASTM D5309-2017 Standard Specification for Cyclohexane 999

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.