GB/T 11275-2007 Active National standards

GB/T 11275-2007 Surface active agents—Determination of water content

Publish Date: 2007-08-13 Implement Date: 2008-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 11275-2007

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for surfactants

ICS Name: Surfactants and other auxiliary agents

Publish Date: 2007-08-13

Implement Date: 2008-02-01

Pages: 8 pages

Scope

This standard specifies the method for determining the water content of surfactants. For powdered, paste-like, and liquid products with a water content (mass fraction) greater than 5%, the toluene azeotropic distillation method can be used. However, the azeotropic distillation method is not suitable for products containing water-soluble volatile substances, such as products containing ethanol. For powdered, paste-like, and liquid products with a water content (mass fraction) less than 1%, the Karl Fischer method is the only acceptable method. However, if the sample contains alkaline compounds such as silicates, carbonates, hydroxides, and borates, it will affect the measurement value. Therefore, the alkaline compounds in the sample should be analyzed before the measurement.