Standard No.:	GB/T 15818-2006
English Name:	Test method for biodegradability of surfactants
Chinese Name:	表面活性剂生物降解度试验方法
Chinese Classification:	G72    Basic standards and general methods for surface active agent
Professional Classification:	GB    National Standard
ICS Classification:	71.100.40 71.100.40    Surface active agents 71.100.40
Issued by:	AQSIQ; SAC
Issued on:	2006-08-21
Implemented on:	2007-1-1
Status:	superseded
Superseded by:	GB/T 15818-2018 Test method for biodegradability of surfactants
Superseded on:	2019-7-1
Superseding:	GB/T 15818-1995 Testing method for biodegradability of anionic and nonionic surfactants
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	80.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the test method for primary biodegradability of surfactants. This standard is applicable to the determination of biological degradability of: anionic surfactants with sulfonic group and sulfonic acid group, surfactants for which the single-chain EO number of polyoxyethylene group ranges 3~40 and the total two-chain, three-chain and four-chain EO number of polyoxyethylene group ranges 6~60; alkylpolyglycosides surfactants, cationic and zwitterionic surfactants and surfactants with relatively affluent foams. This standard is also applicable to the determination of biological degradability of above surfactants in the detergent. 2 Normative References The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated references, subsequent amendments (excluding any corrections) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest editions of the normative documents referred to apply. GB/T 5173 "Surface Active Agents and Detergents - Determination of Anionic-active Matter by Direct Two-phase Titration Procedure"(eqv ISO 2271:1989) GB/T 5174 "Surface Active Agents – Detergents - Determination of Cationic-active Matter Content"(eqv IS0 2871.1:1988, IS0 2871.2:1990) GB/T 5327 "Surface Active Agents; Terms"(idt ISO 862:1984) GB/T 5328 "Surface Active Agents; Simplified Classification"(idt ISO 2123:1972) GB/T 5560 "Nonionic Surface Active Agents - Determination of Polyethylene Glycols and Non-ionic Active Matter (adducts) - Weilbull Method” (idt ISO 2268:1972) GB/T 13173.1 "Method of Sample Division for Detergents"(eqv ISO 607:1980) GB/T 13173.2 "Determination of Total Active Matter Content in Detergents" GB/T 13173.3 "Determination of Nonionic Surface Active Agents in Detergents - Ion Exchange Method"(neq JIS K3362:1998) GB/T 19464 "Alkylpolyglycosides" QB/T 2344 "Amphoteric Surfactants - Fatty Alkyl Dimethyl Betaines" 3 Terms and Definitions

Contents Foreword I Introduction II 1 Scope 2 Normative References 3 Terms and Definitions 4 Method Summary 5 Apparatus 6 Reagents and Materials 7 Testing Procedure 8 Result Calculation 9 Test Conditions 10 Result Report Appendix A (Normative) Determination of Anionic Surfactant - Methylene Blue Method Appendix B (Normative) Determination of Ethoxylated Surfactants-Cobalt Thiocyanate Method Appendix C (Normative) Determination of Cationic and Zwitterionic Surfactants -Gold Orange-II Method Appendix D (Normative) Determination of Alkylpolyglycosides Surfactants --Anthrone Method Appendix E (Normative) Foam Volume Method