GB/T 18825-2024 Cyclopentane for industrial use
Warning——This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory provisions.
1 Scope
This document specifies the classification, requirements, test methods, inspection rules, and marking, packaging, transportation and storage of cyclopentane for industrial use.
This document is applicable to cyclopentane obtained through hydrogenation and distillation of petroleum-based or coal-based C5 raw materials.
Note: The molecular formula of cyclopentane is C5H10, with the structural formula as , and a relative molecular mass of 70.13 (as per the international relative atomic mass in 2022).
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 190 Packing symbol of dangerous goods
GB/T 1884 Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method
GB/T 4472 Determination of density and relative density for chemical products
GB/T 6283 Chemical products - Determination of water Karl·fischer method (general method)
GB/T 6324.8 Test methods of organic chemical products - Part 8: Determination of water of liquid products - Carl·fischer coulometric method
GB/T 6324.10 Test method of organic chemical products - Part 10: Determination of trace sulfur in organic liquid products - Ultraviolet fluorescence method
GB/T 6678 General principles for sampling chemical products
GB/T 6680 General rules for sampling liquid chemical products
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 9722 Chemical reagent - General rules for the gas chromatography
NB/SH/T 0253 Determination of trace quantities of sulfur in light petroleum products - Oxidative microcoulometry method
SH/T 0604 Crude petroleum and petroleum products - Determination of density - Oscillating U-tube method
3 Terms and definitions
No terms or definitions are listed in this document.
4 Classification
Cyclopentane for industrial use is classified into "petroleum-based cyclopentane" and "coal-based cyclopentane" based on the different raw materials.
Contents
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Requirements
6 Test methods
7 Inspection rules
8 Marking, packaging, transportation and storage
Annex A (Informative) Typical chromatograms and retention times of components
