GB/T 258-2016 in English

《GB/T 258-2016轻质石油产品酸度测定法》由TC280（全国石油产品和润滑剂标准化技术委员会）归口，TC280SC1（全国石油产品和润滑剂标准化技术委员会石油燃料和润滑剂分会）执行，主管部门为国家标准化管理委员会。

Standard test method for determination of acidity of light petroleum products

Warning: This standard involves some dangerous materials, operations and equipment, but it does not purport to address all of the safety concerns, if any, associated with its use. Therefore, it is the responsibility of the users of this standard to establish appropriate safety and protection measures and determine the applicability of regulatory limitations prior to use.

1 Scope

This standard specifies the test method for determination of acidity of light petroleum products.

This standard is applicable to light petroleum products such as gasoline, naphtha, kerosene, diesel and jet fuel.

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 622 Chemical reagent - Hydrochloric acid
GB/T 4756 Method for manual sampling of petroleum liquids
GB/T 27867 Petroleum liquid - Automatic pipeline sampling
SH/T 0079-1991 Preparation method of reagent solution for petroleum product test

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1
acidity
mass (in mg) of potassium hydroxide required to neutralize 100mL light petroleum products, expressed in mg/100mL

4 Method summary

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Method summary
5 Apparatus
6 Reagents and materials
7 Sampling
8 Preparation before test
9 Test procedure
10 Calculation
11 Expression and report of results
12 Precision