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GB/T 36700.7-2018: Chemicals -- Guidance on hazard classification to the aquatic environment -- Part 7: Classification of metals and metal compounds
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| GB/T 36700.7-2018 | English | 199 |
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Chemicals -- Guidance on hazard classification to the aquatic environment -- Part 7: Classification of metals and metal compounds
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GB/T 36700.7-2018
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Basic data | Standard ID | GB/T 36700.7-2018 (GB/T36700.7-2018) | | Description (Translated English) | Chemicals -- Guidance on hazard classification to the aquatic environment -- Part 7: Classification of metals and metal compounds | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A80 | | Classification of International Standard | 13.300 | | Word Count Estimation | 10,176 | | Date of Issue | 2018-09-17 | | Date of Implementation | 2019-04-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 36700.7-2018: Chemicals -- Guidance on hazard classification to the aquatic environment -- Part 7: Classification of metals and metal compounds
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Chemicals - Guidance on hazard classification to the aquatic environment - Part 7. Classification of metals and metal compounds
ICS 13.300
A80
National Standards of People's Republic of China
Chemical aquatic environmental hazard classification guide
Part 7. Classification of metals and metal compounds
Part 7. Classificationofmetalsandmetalcompounds
Published on.2018-09-17
Implementation of.2019-04-01
State market supervision and administration
China National Standardization Administration issued
Foreword
GB/T 36700 "Chemical Aquatic Environmental Hazard Classification Guidance" is divided into the following eight parts.
--- Part 1. Introduction;
--- Part 2. Unified classification method;
---Part 3. Aquatic toxicity;
--- Part 4. Degradation;
--- Part 5. Bioconcentration;
--- Part 6. Quantitative structure activity relationship (QSAR);
--- Part 7. Classification of metals and metal compounds;
--- Part 8. Guidance for the conversion/dissolution of metals and metal compounds in aqueous media.
This part is the seventh part of GB/T 36700.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part is proposed and managed by the National Technical Committee for Standardization of Hazardous Chemicals Management (SAC/TC251).
This section drafted by. Anhui Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Ministry of Environmental Protection Solid Waste and Chemicals Management Technology
Center, Hefei University of Technology, China Chemical Industry and Technology Development Center, Shanghai Chemical Research Institute Co., Ltd., Huafeng Group Co., Ltd., Beijing
Guoshi Ankang Technology Co., Ltd., Jiangsu Chengxing Phosphorus Chemical Co., Ltd.
The main drafters of this section. Wen Jinsong, Lu Ling, Han Fang, Ke Yunhui, Zhang Lei, Yan Xuedong, Wang Xinchen, Ma Yan, Sun Wei, Liu Xiaojian, Cao Mengran,
Shang Zhao Cong.
Chemical aquatic environmental hazard classification guide
Part 7. Classification of metals and metal compounds
1 Scope
This part of GB/T 36700 specifies the aquatic toxicity data for the classification of metals and metal compounds in the classification of chemical aquatic environmental hazards.
And the application of solubility data in classification and the application of classification criteria for metals and metal compounds.
This section applies to the guidance on the classification of metals and metal compounds in the classification of chemical aquatic environmental hazards.
This section does not apply to organometallic compounds.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 36700.3 Classification guide for aquatic environmental hazards - Part 3. Hydrotoxicity
GB/T 36700.8 Guidance for the classification of aquatic environmental hazards - Part 8. Transfer of metals and metal compounds in aqueous media
Chemical/dissolution guidance
3 Abbreviations
The following abbreviations apply to this document.
BCF. Bioconcentration factor
BLM. Bioligand Model
CHESS. Soil chemical model (Chemical equiilibriasolutions)
EC50. half effect concentration (Concentrationfor50%ofmaximaleffect)
LC50. half lethal concentration (Lethal concentration 50)
MINTEQ. Environmental Water Chemistry Balance Model
NOEC. No obvious effect concentration (Noobservedeffectconcentration)
WHAM. Windermere humic acid model (Windermere-humicaqueousmodel)
4 Basic principles
4.1 Particularity of classification of metals and metal compounds
4.1.1 When the metal is in the elemental state, it is insoluble in water but can be converted into a usable state. When the metal is in the elemental state, it can be mixed with water or
A dilute aqueous electrolyte solution reacts to form soluble ions, and the metal is oxidized from neutral or zero valence to a higher valence state.
4.1.2 In simple metal compounds (such as oxides or sulfides), the metal is already in an oxidized state, and when it is dissolved in water, the metal further
The possibility of being oxidized is low, but the reaction with the medium may produce more dissolved state. Insoluble metal compounds can be regarded as
A product that dissolves and can produce a small amount of available form by dissolution. The final dissolved concentration is affected by many factors, including
The dissolution product of certain metal compounds precipitated during the conversion/dissolution test.
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