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
