GB/T 5559-2010 (English Version) PDF

Standard No.: GB/T 5559-2010
Language: Chinese, Available in English version
Release Date: 2011
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 5559-2010
Replace: GB/T 5559-1993

Scope: This standard specifies five methods for determining the cloud point of nonionic surfactants. Methods A, B and C are mainly applicable to non-ionic surfactants without oxypropylene groups derived from the condensation of ethylene oxide and lipophilic substances. The choice of method A, B or C depends on the temperature at which the aqueous solution of the product under test becomes turbid. Methods D and E are intended for products to which methods A, B, and C are not applicable, and shall be adopted after the agreement of the parties concerned. Such products include hybrid nonionic surfactants such as those derived from ethylene oxide/propylene oxide block copolymers. The choice of method D and E depends on the temperature at which the acidic aqueous solution of the tested product becomes turbid. However, Method E does not apply to products derived from fatty acids or fatty acid esters.

GB/T 5559-2010 Referenced Document

GB/T 6367 Surface active agents.Preparation of water with known calcium hardness*， 2012-12-31 Update
GB/T 6372-2006 Surface active agents and detergents. Methods of sample division
ISO 1773:1976 Laboratory glassware; Boiling flasks (narrow-necked)

2011 GB/T 5559-2010 Non-ionic surface active agents obtained from ethylene oxide and ethylene oxide/propylene oxide block copolymers.Determination of cloud point
1993 GB/T 5559-1993 Non-ionic surface active agents obtained from ethylene oxide and ethylene oxide/propylene oxide block copolymers. Determination of cloud point