AATCC 97 Test Method for Extractable Content of Textiles

Purpose of Test

This test measures the amount of water, enzyme, and any extractable organic-soluble components of the following materials used during textile processing:

  • Fibers
  • Yarns
  • Fabrics containing cellulose fibers and cellulose blends
  • Other types of fiber

Terminology Defined

Extractable Content – Chemical contents that can be extracted from the textile fabric.

Amylase Solution – Enzymes used for hydrolyzing scratch molecules into polymers.

Hexane Solvent – A solvent that is commonly used to degrease and clean textile fabrics.

Test Method

Materials Used for Test

  • Test specimen
  • Water
  • Amylase Solution
  • Hexane Solvent
Hexane Solvent (Image Source: Alliance Chemical)

Testing Procedure

Water and soluble enzymes are extracted from a test specimen by treatments in:

  1. Hot water
  2. Amylase solution

These enzymes include oils, fats, and waxes that are removed with hexane solvent.

Test Procedure (Summary)

Part 1: Exposure of test specimen to hot water, then amylase solution: The test specimen is exposed to a specified amount of boiling water. The saturated test specimen will also be exposed to amylase solution.

Part 2: Extraction of soluble enzymes: The oils, fats, and waxes are extracted with hexane solvent.

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