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GB/T 5534-2024: Animal and vegetable fats and oils - Determination of saponification value
Status: Valid GB/T 5534: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 5534-2024 | English | 244 |
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Animal and vegetable fats and oils - Determination of saponification value
| Valid |
GB/T 5534-2024
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| GB/T 5534-2008 | English | 160 |
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Animal and vegetable fats and oils -- Determination of saponification value
| Valid |
GB/T 5534-2008
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| GB/T 5534-1995 | English | 199 |
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Animal and vegetable oils and fats--Determination of saponification value
| Obsolete |
GB/T 5534-1995
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| GB 5534-1985 | English | 199 |
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Inspection of vegetable oils--Methods for determination of saponification value
| Obsolete |
GB 5534-1985
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PDF similar to GB/T 5534-2024
Standard similar to GB/T 5534-2024 GB/T 5532 GB/T 5494 GB/T 5498 GB/T 5531 Basic data | Standard ID | GB/T 5534-2024 (GB/T5534-2024) | | Description (Translated English) | Animal and vegetable fats and oils - Determination of saponification value | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X04 | | Classification of International Standard | 67.040 | | Word Count Estimation | 12,137 | | Date of Issue | 2024-10-26 | | Date of Implementation | 2025-05-01 | | Older Standard (superseded by this standard) | GB/T 5534-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 5534-2024: Animal and vegetable fats and oils - Determination of saponification value---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT5534-2024
Animal and vegetable fats and oils - Determination of saponification value
Determination of saponification value of animal and vegetable fats and oils
(ISO 3657.2023, IDT)
ICS 67.040
CCS X 04
National Standard of the People's Republic of China
Replaces GB/T 5534-2008
Released on October 26, 2024
Implementation on May 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 5534-2008 “Animal and vegetable fats and oils - Determination of saponification value”.
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
The concentration of ethanol was increased, and the concentration of potassium hydroxide and ethanol solution was refined (see 5.1, 5.2, 5.1 of the.2008 edition);
Added the specifications of analytical balance and sample weighing accuracy (see 6.6,.2008 edition). -
This document is equivalent to ISO 3567.2023 "Animal and vegetable fats and oils — Determination of saponification value".
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was submitted by the State Administration of Grain and Material Reserves.
This document is under the jurisdiction of the National Technical Committee on Standardization of Cereals and Oils (SAC/TC 270).
This document was drafted by. Wuhan University of Light Industry, COFCO Huanghai Grain and Oil Industry (Shandong) Co., Ltd., Shenzhen Metrology Quality Inspection Research Institute
Institute, Wuhan Food and Cosmetics Inspection Institute, COFCO Fortune Food Marketing Co., Ltd., and Wuhan Institute of Standardization.
The main drafters of this document are. Zhou Li, Gao Pan, Wang Jie, Liu Peilian, Jiang Xiaoming, Yu Lei, Huang Qing, and Zhang Sihong.
The previous versions of this document and the documents it replaces are as follows.
First published in.1995 as GB/T 5534-1995, first revised in.2008;
This is the second revision.
Determination of saponification value of animal and vegetable fats and oils
1 Scope
This document describes the method for determining the saponification value of animal and vegetable fats and oils. The saponification value is a measure of the free fatty acids and glycerides in oils or fatty acids.
indicators.
This document applies to refined animal and vegetable fats and crude animal and vegetable oils.
This document does not apply to products containing inorganic acids unless the inorganic acid can be determined separately.
The saponification value can also be calculated from the fatty acid data obtained by gas chromatography analysis as shown in Appendix B. For this calculation, ensure that the sample
The product does not contain impurities or thermal degradation products.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the latest version (including all amendments) applies to this document.
In this document.
ISO 661 Animal and vegetable fats and oils - Preparation of test samples
sample)
Note. GB/T 15687-2008 Preparation of animal and vegetable fats and oils test specimens (ISO 661.2003, IDT)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Saponification value
IS
The number of milligrams of potassium hydroxide required to saponify 1 g of oil.
4 Principles
The test sample is saponified by using an excess of potassium hydroxide and ethanol solution under reflux boiling conditions, and then titrated with a standard hydrochloric acid solution.
Excess potassium hydroxide.
5 Reagents
Unless otherwise stated, all reagents used in this document were of analytical grade, and the water used was distilled water or demineralized water of equivalent purity.
5.1 Ethanol. volume fraction φ = 95%.
5.2 Potassium hydroxide x ethanol solution. c(KOH) = 0.5 mol/L.
Potassium hydroxide ﹘ ethanol solution is colorless or light yellow. A stable colorless solution can be obtained by any of the following methods.
Reflux 1 L of ethanol (5.1) with 8 g of potassium hydroxide and 5 g of aluminum pellets for 1 h and then immediately distill.
35 g) is dissolved in the distillate. Let it stand for a few days, then pour the clear supernatant from the precipitated potassium carbonate into a brown glass bottle.
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