【国外标准】 Standard Test Methods for Chemical Analysis of Alcohol Ethoxylates and Alkylphenol Ethoxylates

3.1 Alcohol ethoxylates and alkylphenol ethoxylates are important surfactants in household and industrial cleaners. They may be used as either nonionic surfactants or sulfated and used as anionic surfactants. Careful control of the ethoxylate characteristics is desired as variations may result in either desirable or undesirable end-use properties.1.1 These test methods cover the various test methods used to evaluate those properties pertinent to the characterization of alcohol ethoxylates and alkylphenol ethoxylates with respect to suitability for desired uses.1.2 The procedures for sampling and analysis appear in the following order:  SectionsSampling   Liquids 6 Solids 7Methods of Chemical Analysis   Water or moisture 8 Refractive index  9 and 10 pH 11 Acidity or basicity 12 and 13 Hydroxyl number 14 – 20 Cloud point 21 Iodine number 22 Ash 23 Iron 24 Ethylene oxide content 25 Polyethylene glycols 26 – 321.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage. Specific hazard statements appear in Section 5 and Note 1 and Note 3.