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GB/T 7816-2025: Yellow phosphorus for industrial use
Status: Valid
GB/T 7816: Historical versions
| Standard ID | USD | BUY PDF | Lead-Days | Standard Title (Description) | Status |
| GB/T 7816-2025 | 239 |
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Yellow phosphorus for industrial use
| Valid |
| GB/T 7816-2018 | 150 |
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Yellow phosphorus for industrial use
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| GB 7816-1998 | 359 |
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[GB/T 7816-1998] Yellow phosphorus for industrial use
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| GB 7816-1987 | RFQ |
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Technical yellow phosphorus
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Basic data
Standard ID: GB/T 7816-2025 (GB/T7816-2025)
Description (Translated English): Yellow phosphorus for industrial use
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G13
Classification of International Standard: 71.060.10
Word Count Estimation: 12,121
Date of Issue: 2025-08-29
Date of Implementation: 2026-03-01
Older Standard (superseded by this standard): GB/T 7816-2018
Issuing agency(ies): State Administration for Market Regulation; Standardization Administration of China
GB/T 7816-2025: Yellow phosphorus for industrial use
---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/GBT7816-2025
ICS 71.060.10
CCSG13
National Standards of the People's Republic of China
Replaces GB/T 7816-2018
Industrial yellow phosphorus
Published on 2025-08-29
Implemented on 2026-03-01
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
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 7816-2018 "Industrial Yellow Phosphorus". Compared with GB/T 7816-2018, the main differences are structural adjustments and editorial changes.
In addition, the main technological changes are as follows.
a) Added indicators for qualified products (see Chapter 5);
b) The indicators for yellow phosphorus and insoluble matter in benzene have been removed (see Chapter 4 of the.2018 edition);
c) The arsenic index has been changed (see Chapter 5, Chapter 4 in the.2018 edition);
d) The method for determining the content of insoluble matter in benzene has been removed (see Chapter 5 of the.2018 edition);
e) Atomic fluorescence spectrometry and inductively coupled plasma atomic emission spectrometry have been added for the determination of arsenic content (see 6.6.2 and 6.6.3).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Chemical Standardization (SAC/TC63).
This document was drafted by. Guizhou Phosphate (Group) Co., Ltd., Hubei Xingfa Chemical Group Co., Ltd., and Yunnan Jianglin Group.
Joint-stock company, Guizhou Xintianxin Chemical Co., Ltd., Guizhou Fuquan Chuandong Chemical Co., Ltd., Guizhou Shenghongwei New Material Technology Co., Ltd.
Company, Yunnan Xuanwei Phosphorus & Electricity Co., Ltd., Wengfu (Group) Co., Ltd., Guizhou Provincial Institute of Product Quality Inspection and Testing, Tianbao Animal Nutrition
Technology Co., Ltd., and CNOOC Tianjin Chemical Research and Design Institute Co., Ltd.
The main drafters of this document are. Chen Huiyun, Liu Li, Rao Zhizhen, Hu Lei, Wang Lu, Li Haiyan, Zhao Junfeng, Yang Jun, Wu Changwei, and Ding Shuixian.
Huang Guoxing, Ma Lei, Qiu Xiaojuan, Zhang Kai, Wang Ying, Wang Yan.
The release history of this document and the document it replaces is as follows.
---First published as GB 7816-1987 in 1987, revised for the first time in.1998, and revised for the second time in.2018;
---This is the third revision.
Industrial yellow phosphorus
Warning. According to Chapter 6 of GB 12268-2025, this product belongs to Category 4, Item 4.2, substances that are easily ignited, and Category 6, Item 6.1.
Toxic substances should be handled with care. The test samples and some reagents used in the test methods of this document are toxic, flammable, or...
It is corrosive and should be handled with care in a well-ventilated fume hood. If it splashes onto the skin, rinse immediately with water. In severe cases, seek immediate medical attention.
When using substances that are prone to spontaneous combustion, open flames should not be used for heating.
1.Scope
This document specifies the requirements, test methods, inspection rules, marking, labeling and accompanying documents, packaging, transportation and storage of industrial yellow phosphorus.
This document applies to industrial yellow phosphorus.
Note. This product is mainly used in the manufacture of red phosphorus, phosphoric acid, phosphorus compounds and phosphates, etc.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB 190-2009 Packaging Marks for Dangerous Goods
GB/T 191-2008 Pictorial Symbols for Packaging and Storage
GB/T 6678 General Rules for Sampling of Chemical Products
GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories
GB/T 8170 Rules for rounding off numerical values and the representation and determination of limiting values
GB 12268-2025 List of Dangerous Goods
GB 12463-2009 General Technical Requirements for Packaging of Dangerous Goods
GB 15603 General Rules for Storage of Hazardous Chemicals in Warehouses
GB 16473-1996 Packaging of Yellow Phosphorus
GB 19358 Safety Standards for Packaging and Use of Yellow Phosphorus
GB/T 23947.1-2009 General Methods for the Determination of Arsenic in Inorganic Chemical Products Part 1.Silver Diethyldithiocarbamate
Photometry
HG/T 3696.2 Preparation of standard solutions, preparations and products for chemical analysis of inorganic chemical products - Part 2.Impurity standard solutions
Preparation of liquid
HG/T 3696.3 Preparation of standard solutions, formulations and products for chemical analysis of inorganic chemical products - Part 3.Formulations and products
Preparation
JT/T 617 (All Parts) Rules for Road Transport of Dangerous Goods
TB/T 30006 List of Dangerous Goods for Railway Transportation
3.Terms and Definitions
This document does not contain any terms or definitions that need to be defined.
4.Molecular formula and relative molecular mass
Molecular formula. P or P4;
Relative molecular mass. 30.97 or 123.9 (based on the 2022 international relative atomic mass).
5 Requirements
5.1 Appearance. At room temperature, the superior grade is a pale yellow to slightly yellowish-green paraffin-like solid; the first grade and qualified grade are yellowish-green to brownish-green.
A waxy solid.
5.2 Industrial yellow phosphorus shall be tested in accordance with the test methods specified in this document and shall meet the requirements of Table 1.
Table 1
project
index
Superior grade, first grade, qualified grade
Yellow phosphorus (P) w/% ≥ 99.90 99.90 99.50
Carbon disulfide insoluble matter w/% ≤ 0.10 0.10 0.50
Arsenic (As) w/% ≤ 0.01 0.04 -
6.Test Methods
6.1 General Provisions
Unless otherwise specified, all reagents and water used in this document refer to analytical grade reagents and grade III reagents as specified in GB/T 6682-2008.
Water. Unless otherwise specified, all impurity standard solutions, preparations, and products used in the experiment shall conform to HG/T 3696.2 and HG/T 3696.3.
Prepared according to regulations.
6.2 Visual Inspection
Under natural light conditions, the appearance of the sample in the sample cup (see 7.3) is determined by visual inspection.
6.3 Sample Preparation
The sample was prepared using a sample preparation device, which is shown in Figure 1.
Wearing rubber gloves, place the sample cup containing yellow phosphorus (see 7.3) into a water bath (or tank) and heat to approximately 70°C to melt the yellow phosphorus. Use the inner diameter...
Insert a 1mm-5mm sampling tube into the sample cup, stir gently, and extract the required amount of yellow phosphorus. Seal the top of the sampling tube with your finger, and slowly...
Slowly raise the sampling tube to the water level (Note. Do not let the bottom of the sampling tube leave the water surface), and inject the yellow phosphorus from the sampling tube into the water bath (tank) that has been pre-placed.
Place the sample in a porcelain crucible. Remove the crucible containing the sample from the water bath (or tank) and place it in cold water to cool. Once the yellow phosphorus has solidified, remove it with tweezers and store it.
Place it in a wide-mouthed bottle filled with water for later use.
Index number explanation.
1---Sampling tube;
2---Water bath (tank);
3---Sample cup;
4---Yellow phosphorus layer;
5---Hot water;
6---Porcelain crucible (15mL).
Figure 1 Sample preparation apparatus
6.4 Yellow phosphorus content
The yellow phosphorus content is expressed as the mass fraction of phosphorus (P), w1, and is calculated according to formula (1).
w1=100%-w2 (1)
In the formula.
w2 --- Mass fraction of carbon disulfide insoluble matter.
6.5 Determination of the content of carbon disulfide insoluble matter
6.5.1 Principle
The yellow phosphorus sample was dissolved in carbon disulfide, and the content of carbon disulfide insoluble matter was calculated by filtration, drying, and weighing.
6.5.2 Reagents or materials
6.5.2.1 Carbon disulfide.
6.5.2.2 Anhydrous ethanol.
6.5.3 Instruments and Equipment
6.5.3.1 Glass sand crucible. The filter plate pore size is 5μm~15μm;
6.5.3.2 Electric heating constant temperature drying oven. The temperature can be controlled at 105℃~110℃.
6.5.4 Test Procedure
Use tweezers to take about 3g to 5g of sample, quickly blot dry the surface of the sample with filter paper, and place it in 50mL of anhydrous ethanol.
Dehydrate in a beaker. Remove with tweezers, blot dry with filter paper, and quickly place into a weighing bottle of known weight (containing enough water to submerge the sample).
Weigh the sample to an accuracy of 0.01g. Connect a glass frit crucible, dried to constant mass at 105℃~110℃, to a vacuum filtration flask, and add the sample to the glass frit.
Add 15 mL of carbon disulfide to a sand crucible, quickly blot dry the surface moisture of a known weight of the sample with filter paper, and place it in a glass sand crucible.
After the yellow phosphorus dissolves, turn on the vacuum pump equipped with adsorption and buffer devices for filtration. Stop filtration when the liquid layer is nearly dry. Then add 5 mL of [unspecified substance].
Carbon disulfide is dissolved and then filtered. This process is repeated until all the yellow phosphorus is dissolved and filtered out. The filtrate is then dripped onto filter paper; the carbon disulfide will evaporate without emitting any fumes.
Stop when white smoke appears. Place the glass sand crucible, after completely filtering out the yellow phosphorus, at room temperature until all the carbon disulfide has evaporated, then place it at 105℃~110℃.
......
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