QB/T 3812.13-1999
Leather.Determination of matter soluble in dichloromethane (English Version)

Standard No.

QB/T 3812.13-1999

Language

Chinese, Available in English version

Release Date

1984

Published By

Professional Standard - Light Industry

Status

Be replaced 2005-09

Replace By

QB/T 2718-2005

Latest

QB/T 2718-2018

Scope

This standard specifies the determination method of methylene chloride extract in leather and is applicable to various types of leather. Fats and fat-like substances cannot be fully extracted from leather using organic solvents. They may be partially dissolved in the leather and partially bonded to the leather. Solvents, on the other hand, can dissolve non-fatty substances, such as sulfur and filler substances. These two substances can cause difficulties in determining the acid value and saponification value of fats.

QB/T 3812.13-1999 history

• 2019 QB/T 2718-2018 Determination of dichloromethane extract in leather chemical test
• 2005 QB/T 2718-2005 Leather-Chemical test-Determination of matter soluble in dichloromethane
• 1984 QB/T 3812.13-1999 Leather.Determination of matter soluble in dichloromethane

QB/T 3812.13-1999 Leather.Determination of matter soluble in dichloromethane was changed to QB/T 2718-2005 Leather-Chemical test-Determination of matter soluble in dichloromethane.