HG/T 5718-2020 Mixed dibasic esters for industrial use
1 Scope
This standard specifies the requirements, test methods, inspection rules as well as marking, packaging, transportation and storage of mixed dibasic esters for industrial use.
This standard is applicable to the mixed dibasic esters for industrial use prepared by esterification of mixed dibasic acid and methanol.
Molecular formula Structural formula Relative molecular mass (as per the international relative atomic mass in 2018)
Dimethyl succinate C6H10O4 146.14
Dimethyl glutarate C7H12O4 160.17
Dimethyl methylglutarate C8H14O4 174.20
Dimethyl adipate C8H14O4 174.20
2 Normative references
The following referenced documents are indispensable for the application 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/T 1668 Plasticizers - Determination of acid value and acidity
GB/T 3143 Color determination method of liquid chemicals (Hazen unit - Platinum-cobalt scale)
GB/T 6324.8 Test methods of organic chemical products - Part 8: Determination of water of liquid products - Carl·fischer coulometric method
GB/T 6680 General rules for sampling liquid chemical products
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 9283 Solvent for coating - Determination of distillation range
GB/T 9722 Chemical reagent - General rules for the gas chromatography
3 Requirements
3.1 Appearance: transparent liquid without visible impurities.
3.2 The mixed dibasic esters for industrial use shall meet the technical requirements as shown in Table 1.
Table 1 Technical requirements
Foreword i
1 Scope
2 Normative references
3 Requirements
4 Test methods
5 Inspection rules
6 Marking, packaging, transportation and storage
Annex A (Normative) Typical chromatogram for determination of mixed dibasic esters content and relative retention value of components
