GB/T 10668-2026 Acetic anhydride for industrial use English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 10668-2026
Acetic anhydride for industrial use
工业用乙酸酐
Issue date: 2026-01-28 Implementation date: 2027-02-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Technical Requirements
5 Test Methods
6 Inspection Rules
7 Marking, Packaging, Transport and Storage
Acetic anhydride for industrial use
WARNING — This document is not intended to address all safety issues associated with its use. It is the responsibility of the user to take appropriate safety and health measures and to comply with relevant national regulations.
1 Scope
This document specifies the technical requirements, test methods, inspection rules, marking, packaging, transport and storage for acetic anhydride for industrial use.
This document is applicable to acetic anhydride for industrial use produced by the cracking process from acetic acid, or by the carbonylation process from methanol and carbon monoxide.
NOTE: Molecular formula of acetic anhydride: C₄H₆O₃; structural formula: ; relative molecular mass: 102.09 (based on the 2022 international relative atomic masses).
2 Normative References
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB 190, Packing symbol of dangerous goods
GB/T 601, Chemical reagent — Preparations of standard volumetric solutions
GB/T 603, Chemical reagent — Preparations of reagent solutions for use in test methods
GB/T 3049, Chemical products for industrial use — General method for determination of iron content — 1,10-Phenanthroline spectrophotometric method
GB/T 3143, Liquid chemical products — Determination of colour (Hazen unit — platinum-cobalt scale)
GB/T 6324.2, Test methods of organic chemical products — Part 2: Determination of dry residue after evaporation on a water bath for volatile organic liquids
GB/T 6324.3, Test methods of organic chemical products — Part 3: Determination of substances reducing potassium permanganate
GB/T 6324.6, Test methods of organic chemical products — Part 6: Determination of liquid colour — Tristimulus colorimetry 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 and expression and judgement of limiting values
GB/T 9722, Chemical reagent — General rules for gas chromatography
3 Terms and Definitions
No terms and definitions need to be defined in this document.
4 Technical Requirements
The technical requirements for acetic anhydride for industrial use shall comply with the provisions of Table 1.
5 Test Methods
WARNING — Some processes specified in the test methods may lead to hazardous situations. Operators shall take appropriate safety and protective measures.
5.1 General Provisions
Unless otherwise specified, the reagents and water used in this document shall be analytical reagent grade and grade 3 water as specified in GB/T 6682. Unless otherwise specified, the standard volumetric solutions, reagents and preparations used in the tests shall be prepared in accordance with the provisions of GB/T 601 and GB/T 603.
5.2 Determination of Appearance
Take an appropriate amount of sample in a stoppered colour comparison tube and observe visually under natural light or a daylight lamp.
5.3 Determination of Colour
Carry out in accordance with the provisions of GB/T 3143 or GB/T 6324.6, with GB/T 3143 as the arbitration method.
5.4 Determination of Acetic Anhydride and Acetic Acid Contents
5.4.1 Principle
Gas chromatography is used. Under selected working conditions, the sample is vaporised and separated on a capillary chromatographic column, detected by a flame ionization detector (FID), and quantified by the area normalization method.
5.4.2 Reagents or Materials
5.4.2.1 Nitrogen: volume fraction not less than 99.99 %. It shall be purified by passing through silica gel, molecular sieve or activated carbon before use.
5.4.2.2 Hydrogen: volume fraction not less than 99.99 %. It shall be purified by passing through silica gel, molecular sieve or activated carbon before use.
5.4.2.3 Air: free from corrosive impurities. It shall be deoiled and dehydrated before use.
5.4.3 Instruments and Equipment
5.4.3.1 Gas chromatograph: equipped with a flame ionization detector (FID) and a sample splitter. The overall performance of the instrument shall comply with the relevant provisions of GB/T 9722.
5.4.3.2 Recorder: chromatography workstation.
5.4.3.3 10 μL micro-syringe or automatic sampler.
Standard
GB/T 10668-2026 Acetic anhydride for industrial use (English)
GB/T 10668-2026 Acetic anhydride for industrial use English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 10668-2026
Acetic anhydride for industrial use
工业用乙酸酐
Issue date: 2026-01-28 Implementation date: 2027-02-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Technical Requirements
5 Test Methods
6 Inspection Rules
7 Marking, Packaging, Transport and Storage
Acetic anhydride for industrial use
WARNING — This document is not intended to address all safety issues associated with its use. It is the responsibility of the user to take appropriate safety and health measures and to comply with relevant national regulations.
1 Scope
This document specifies the technical requirements, test methods, inspection rules, marking, packaging, transport and storage for acetic anhydride for industrial use.
This document is applicable to acetic anhydride for industrial use produced by the cracking process from acetic acid, or by the carbonylation process from methanol and carbon monoxide.
NOTE: Molecular formula of acetic anhydride: C₄H₆O₃; structural formula: ; relative molecular mass: 102.09 (based on the 2022 international relative atomic masses).
2 Normative References
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB 190, Packing symbol of dangerous goods
GB/T 601, Chemical reagent — Preparations of standard volumetric solutions
GB/T 603, Chemical reagent — Preparations of reagent solutions for use in test methods
GB/T 3049, Chemical products for industrial use — General method for determination of iron content — 1,10-Phenanthroline spectrophotometric method
GB/T 3143, Liquid chemical products — Determination of colour (Hazen unit — platinum-cobalt scale)
GB/T 6324.2, Test methods of organic chemical products — Part 2: Determination of dry residue after evaporation on a water bath for volatile organic liquids
GB/T 6324.3, Test methods of organic chemical products — Part 3: Determination of substances reducing potassium permanganate
GB/T 6324.6, Test methods of organic chemical products — Part 6: Determination of liquid colour — Tristimulus colorimetry 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 and expression and judgement of limiting values
GB/T 9722, Chemical reagent — General rules for gas chromatography
3 Terms and Definitions
No terms and definitions need to be defined in this document.
4 Technical Requirements
The technical requirements for acetic anhydride for industrial use shall comply with the provisions of Table 1.
5 Test Methods
WARNING — Some processes specified in the test methods may lead to hazardous situations. Operators shall take appropriate safety and protective measures.
5.1 General Provisions
Unless otherwise specified, the reagents and water used in this document shall be analytical reagent grade and grade 3 water as specified in GB/T 6682. Unless otherwise specified, the standard volumetric solutions, reagents and preparations used in the tests shall be prepared in accordance with the provisions of GB/T 601 and GB/T 603.
5.2 Determination of Appearance
Take an appropriate amount of sample in a stoppered colour comparison tube and observe visually under natural light or a daylight lamp.
5.3 Determination of Colour
Carry out in accordance with the provisions of GB/T 3143 or GB/T 6324.6, with GB/T 3143 as the arbitration method.
5.4 Determination of Acetic Anhydride and Acetic Acid Contents
5.4.1 Principle
Gas chromatography is used. Under selected working conditions, the sample is vaporised and separated on a capillary chromatographic column, detected by a flame ionization detector (FID), and quantified by the area normalization method.
5.4.2 Reagents or Materials
5.4.2.1 Nitrogen: volume fraction not less than 99.99 %. It shall be purified by passing through silica gel, molecular sieve or activated carbon before use.
5.4.2.2 Hydrogen: volume fraction not less than 99.99 %. It shall be purified by passing through silica gel, molecular sieve or activated carbon before use.
5.4.2.3 Air: free from corrosive impurities. It shall be deoiled and dehydrated before use.
5.4.3 Instruments and Equipment
5.4.3.1 Gas chromatograph: equipped with a flame ionization detector (FID) and a sample splitter. The overall performance of the instrument shall comply with the relevant provisions of GB/T 9722.
5.4.3.2 Recorder: chromatography workstation.
5.4.3.3 10 μL micro-syringe or automatic sampler.
