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GB/T 36700.4-2018Chemicals—Guidance on hazard classification to the aquatic environment—Part 4: Degradation (English PDF)

化学品水生环境危害分类指导第4部分：降解

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 17, 2018

Implementation date

April 1, 2019

Scope

GB/T 36700.4-2018 is the English-translated version of 化学品水生环境危害分类指导第4部分：降解.

GB/T 36700.4-2018 is Part 4, on degradation, of the Chinese national guidance on classifying chemicals for hazards to the aquatic environment. It gives an overview of how degradation enters that classification, explains how degradability data should be interpreted, and discusses the general problems of interpretation and the ways of judging them.

The data come from the test methods it cites, including tests of rapid biodegradability by DOC reduction, closed bottle, carbon dioxide production and respirometry, tests of inherent biodegradability, pH-dependent hydrolysis, simulated aerobic sewage treatment and biodegradability in seawater.

Its terms are taken from GB 30000.28, the part of the chemical classification and labelling series on harm to the aquatic environment. The series has eight parts, from the introduction to metals and metal compounds. It was issued on 17 September 2018 and has applied since 1 April 2019.

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Document preview — GB/T 36700.4-2018

National Standard of the People's Republic of China

ICS: 13.300
Classification: A 80

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions, abbreviations

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 fourth part of GB/T 36700.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This part of GB/T 36700 specifies an overview of the classification of chemical aquatic environmental hazards involving degradation, interpretation of degradability data, and general Instructions for explaining problems and methods of judgment.

This section applies to the guidance on the classification of chemical aquatic environmental hazards involving degradation.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 15441 Determination of acute toxicity of water -- Luminescent bacteria method

GB/T 21795 chemical simulation test sewage aerobic treatment biofilm method

GB/T 21796 chemical activated sludge respiratory inhibition test

GB/T 21801 chemical rapid biodegradability respirometry test

MTTI Test for Improved Rapid Biodegradability of GB/T 21802 Chemicals (I)

GB/T 21803 chemical rapid biodegradability DOC reduction test

GB/T 21815.1 Chemical biodegradability shake flask test in seawater

GB/T 21816 chemical inherent biodegradability Zahn-Whrenz test

Semi-continuous activated sludge test with improved biodegradability of GB/T 21817 chemical

MTTI test for improved biodegradability of GB/T 21818 chemicals (II)

GB/T 21829 chemical sewage aerobic treatment simulation test. activated sludge unit method

GB/T 21831 chemical rapid biodegradable closed bottle method test

GB/T 21855 chemical pH-related hydrolysis test

GB/T 21856 chemical rapid biodegradable carbon dioxide production test

OECD screening test for improved rapid biodegradability of GB/T 21857 chemicals

General rules for rapid biodegradability of GB/T 27850 chemicals

GB 30000.28 Classification and labelling of chemicals - Part 28. Harm to the aquatic environment

ISO 9509 Water quality chemical substance and wastewater activated sludge inhibition nitrification evaluation method

Determination of the inhibition of light emission by Vibrio fischeri by ISO 11348 water quality water sample (Luminescent bacteria test)

3 Terms and definitions, abbreviations

3.1 Terms and definitions

The following terms and definitions defined in GB 30000.28 apply to this document.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 9509 · ISO 11348

Cited by

GB/T 36700.1-2018Chemicals—Guidance on hazard classification to the aquatic environment—Part 1: Introduction

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GB 47369-2026|GB/T 21614-2026|GB/T 22226-2026|GB/T 22232.2-2026|GB 12268-2025|GB 14544-2025

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