Overview
EN ISO 1833-8:2010 (identical to ISO 1833-8:2006) is a standardized chemical test method for textiles that specifies how to determine the percentage of acetate fibres in binary mixtures of acetate and triacetate fibres using an acetone‑based extraction. The method measures acetate content after removal of non‑fibrous matter and is part of the ISO 1833 series on quantitative chemical analysis of textiles. EN ISO 1833-8 is published by CEN as the European adoption of the ISO document.
Key topics and technical requirements
- Scope: Quantitative determination of acetate in binary acetate/triacetate textile mixtures (after removing non‑fibrous matter).
- Principle: Dissolution of acetate fibre in aqueous acetone; residue (triacetate and non‑dissolved matter) is collected, washed, dried and weighed; acetate percentage is the difference.
- Reagent: Aqueous acetone 70% (volume fraction) - prepared by diluting 700 ml acetone to 1 L with water.
- Apparatus: Includes general items from ISO 1833-1 plus a minimum 200 ml glass‑stoppered conical flask and a mechanical shaker.
- Test procedure (high level):
- Add 80 ml of 70% aqueous acetone per gram of specimen, shake 1 hour on a mechanical shaker.
- Decant through a weighed filter crucible; follow with additional 60 ml washes and repeated treatments, transferring fibres to the crucible on the final wash.
- Wash, drain (suction and gravity), dry, cool and weigh the residue.
- Calculation: Follow ISO 1833-1 general calculation rules; the standard specifies a correction factor value d = 1.01.
Applications and users
- Who uses it:
- Textile testing laboratories and quality control units
- Manufacturers of acetate/triacetate textiles and blends
- Certification bodies and compliance teams
- R&D teams developing fibre blends or validating raw material claims
- Practical uses:
- Verifying fibre composition for product labeling and regulatory compliance
- Quality assurance during production and incoming material inspection
- Troubleshooting blend composition in dyeing, finishing or recycling processes
- Supporting claims in procurement, certification and dispute resolution
Related standards
- ISO 1833-1 - General principles of testing (normative reference for procedure and calculations)
- Other parts of the ISO 1833 series (e.g., ISO 1833-3, ISO 1833-9) cover different fibre mixtures and solvents (benzyl alcohol, alternative acetone methods).
- EN adoption: EN ISO 1833-8:2010 (CEN endorsement of ISO 1833-8:2006)
Keywords: EN ISO 1833-8:2010, ISO 1833-8, acetate and triacetate fibres, acetone method, textiles quantitative chemical analysis, fibre composition testing.
