QB/T 3812.16-1999
Leather.Determination of water-soluble matter,water-soluble inorganic matter and water-soluble organic matter (English Version)

Standard No.

QB/T 3812.16-1999

Language

Chinese, Available in English version

Release Date

1984

Published By

Professional Standard - Light Industry

Status

Be replaced 2005-09

Replace By

QB/T 2721-2005

Latest

QB/T 2721-2018

Scope

This standard is applicable to the determination of water-soluble substances, water-soluble inorganic substances and water-soluble organic substances of various types of leather. The determination of water-soluble content depends on the degree of grinding of the leather, extraction temperature, extraction time and the ratio of leather to water. To obtain comparative results, the test conditions must be strictly adhered to. In any case, any ammonium salt is present in the solution as a water-soluble organic substance in the form of ammonium sulfate.

QB/T 3812.16-1999 history

• 2018 QB/T 2721-2018 Leather chemical test Determination of water-soluble substances, water-soluble inorganic substances and water-soluble organic substances
• 2005 QB/T 2721-2005 Leather-Chemical tests-Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter
• 1984 QB/T 3812.16-1999 Leather.Determination of water-soluble matter,water-soluble inorganic matter and water-soluble organic matter

QB/T 3812.16-1999 Leather.Determination of water-soluble matter,water-soluble inorganic matter and water-soluble organic matter was changed to QB/T 2721-2005 Leather-Chemical tests-Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter.