【国外标准】 Standard Test Methods for Chemical Analysis of Soaps Containing Synthetic Detergents

AbstractThese test methods detail the standard procedures for the chemical analysis of soaps containing synthetic detergents. The analytical procedures include the determination of the following chemical properties and substances: moisture and other matter volatile at a specified temperature; free alkali or free acid; anhydrous, salt-free soda soap; alcohol-soluble matter; matter insoluble in water; total alkalinity of matter insoluble in alcohol (alkaline salts); sodium silicate; phosphates; phosphates by colorimetric method using molybdenum blue); unsaponified and unsaponifiable matter; free fatty matter; chlorides in alcohol-soluble matter; rosin by McNicoll method; synthetic detergent by difference; and neutral inorganic salts.1.1 These test methods cover procedures for the chemical analysis of soaps containing synthetic detergents.1.2 The analytical procedures appear in the following order:  Sections   Moisture and Other Matter Volatile at 105°C (Oven Method)  5 and 6Free Alkali or Free Acid  7 and 8Anhydrous, Salt-Free, Soda Soap  9 – 12Alcohol-Soluble Matter 13 and 14Matter Insoluble in Water 15 and 15Total Alkalinity of Matter Insoluble in Alcohol (Alkaline Salts) 16 and 17Sodium Silicate 18 – 20Phosphates 21 – 28Phosphate (Colorimetric Method Using Molybdenum Blue) 29 – 34Unsaponified and Unsaponifiable Matter 35 – 39Free Fatty Matter 40Chlorides in Alcohol-Soluble Matter 41 – 43Rosin (McNicoll Method) 44 – 47Synthetic Detergent (by Difference) 48Neutral, Inorganic Salts 491.3 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 problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.