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GB/T 8026-2023: Test method for drop melting point of petroleum wax, including petrolatum
Status: Valid GB/T 8026: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 8026-2023 | English | 189 |
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Test method for drop melting point of petroleum wax, including petrolatum
| Valid |
GB/T 8026-2023
|
| GB/T 8026-2014 | English | 199 |
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2 days [Need to translate]
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Standard test method for melting point of petroleum wax, including petrolatum
| Obsolete |
GB/T 8026-2014
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| GB/T 8026-1987 | English | 199 |
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2 days [Need to translate]
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Petroleum waxes and petrolatums--Determination of drop melting point
| Obsolete |
GB/T 8026-1987
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PDF similar to GB/T 8026-2023
Basic data | Standard ID | GB/T 8026-2023 (GB/T8026-2023) | | Description (Translated English) | Test method for drop melting point of petroleum wax, including petrolatum | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E42 | | Classification of International Standard | 75.140 | | Word Count Estimation | 10,147 | | Date of Issue | 2023-09-07 | | Date of Implementation | 2024-04-01 | | Older Standard (superseded by this standard) | GB/T 8026-2014 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 8026-2023: Test method for drop melting point of petroleum wax, including petrolatum---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 75.140
CCSE42
National Standards of People's Republic of China
Replace GB/T 8026-2014
Determination of melting point of petroleum wax and petroleum grease droplets
Published on 2023-09-07
2024-04-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 8026-2014 "Method for determination of melting point of petroleum wax and petroleum grease droplets". Compared with GB/T 8026-2014, except for
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Test method B is added to the scope (see Chapter 1);
b) Changed the definition of dripping melting point (see 3.1,.2014 version of 3.1);
c) Added relevant requirements for Method B (see 4.2, 5.2, 7.2, 10.2);
d) The water bath was changed to a bathroom, and the heat transfer medium requirements were added (see 5.1.2, 5.2 of the.2014 version);
e) Added quality control (see Chapter 9).
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed and coordinated by the National Petroleum Products and Lubricants Standardization Technical Committee (SAC/TC280).
This document was drafted by. China Petrochemical Corporation Dalian Petrochemical Research Institute, Taizhou Customs of the People's Republic of China, China
Jingmen Branch of Sinopec Chemical Co., Ltd., Hansheng Chemical (Fushun) Co., Ltd.
The main drafters of this document. Guo Shigang, Wang Shaojun, Cai Hongmei, Gao Xufeng, Zhao Bin, Gu Mingdi, Ling Fengxiang, Jiang Xiuhua, Jia Weiming,
Wang Shiyu, Wang Shirley, Liu Jingjie.
This document was first published in 1987, revised for the first time in.2014, and this is the second revision.
Determination of melting point of petroleum wax and petroleum grease droplets
Warning---Personnel using this document should have practical experience in regular laboratory work. The use of this document may involve certain hazardous
materials, equipment and operations, this document does not identify all possible safety issues. Users are responsible for taking appropriate safety and health measures
implementation, and ensure compliance with the conditions stipulated in relevant national laws and regulations.
1 Scope
This document describes a method for the determination of the melting point of petroleum wax and petroleum grease droplets.
Method A in this document is suitable for the determination of the melting point of petroleum wax and petroleum grease droplets.
Method B in this document is suitable for the determination of droplet melting point during the production process of petroleum wax and petroleum grease, and is not applicable to synthetic wax, animal wax and plant wax.
Determination of melting point of wax droplets blended with petroleum wax.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB/T 514-2005 Technical specifications for liquid-in-glass thermometers for petroleum product testing
GB/T 4756 Manual sampling method for petroleum liquids
GB/T 27867 Automatic sampling method for petroleum liquid pipelines
SH/T 0229 Sampling method for solid and semi-solid petroleum products
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
dropmeltingpoint dropmeltingpoint
Under specified conditions, the temperature at which petroleum wax and petroleum grease melt to reach a certain fluidity and drip from the test thermometer or from the sample
The temperature at which the cup is dripping.
4 Principles
4.1 Method A
Immerse the cooled thermometer into the sample so that the sample adheres to the mercury bulb of the thermometer. Place the thermometer with the sample adhered to the test tube
, heat the test tube until the sample melts and the first drop drops from the mercury bulb of the thermometer. The dripping temperature is the drop melting point of the sample.
4.2 Method B
Pour the molten sample into a sample cup with a 2.8mm diameter hole at the bottom, cool it under the specified conditions, and place the sample containing the cooled sample into the cup.
The sample cup is heated at a constant rate in the air, and the sample melts and flows downward to form droplets. The dripping temperature is the droplet melting point of the sample.
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