ISO 3175-6:2019

Overview

ISO 3175-6:2019 specifies a reproducible laboratory procedure for professional drycleaning and finishing of textiles using decamethylpentacyclosiloxane (D5). The standard defines how to test fabrics, garments and composite specimens in commercial drycleaning machines to evaluate performance after cleaning and finishing. It covers procedures for normal materials and sensitive materials, including conditioning, load preparation, solvent and detergent dosing, drying and finishing methods.

Key topics and technical requirements

• Scope & safety: Applies to professional drycleaning with D5 (decamethylpentacyclosiloxane) and references general testing in ISO 3175‑1; safety precautions when using drycleaning equipment are highlighted.
• Solvent specification: D5 (CAS 541‑02‑6) with reported flashpoint 77 °C and boiling point 210 °C.
• Machine requirements:
  • Commercial reversible rotating cage (diameter 600–1 080 mm, depth ≥300 mm) with 3–4 lifters.
  • Controlled solvent and air temperature, solvent dryness control, dosing facilities and temperature measurement to ±2 °C.
  • Specified g‑factor for operation (values given for cleaning and extraction).
• Load and ballast:
  • Load mass calculated from cage volume; test specimens ≤10 % of load mass unless otherwise large.
  • Ballast: clean light-coloured textile pieces (~80 % wool, 20 % cotton), 300 mm × 300 mm.
• Reagents and dosing:
  • Solvent charged with detergent (document gives 1 g/l baseline and emulsion recipes).
  • Example normal‑process emulsion per kg load: 10 ml detergent (target ~3 g/l), 30 ml D5 and 20 ml water (≈2 % water by load mass).
• Process parameters:
  • Maintain solvent at (30 ± 3) °C for the normal procedure.
  • Steps include pump circulation, emulsion addition, centrifugal extraction, rinsing with pure solvent, drying (with maximum outlet temperature limits in Table 1), deodorization and post‑drying rest.
• Conditioning and specimens:
  • Condition specimens per ISO 139 (20 °C, 65 % RH, minimum 16 h).
  • Fabric specimen sizes and composite specimen requirements described.
• Finishing options:
  • Methods A–F: no finishing, iron, steam press, steaming on table/press, mannequin/cabinet steaming, or no suitable method found. Document requires reporting of finishing conditions.

Applications and who uses it

• Practical for textile laboratories, professional drycleaners, apparel manufacturers, textile testing labs and R&D teams that need standardized evaluation of cleanability, dimensional stability and finishing effects when using D5 drycleaning solvent.
• Use cases: comparative performance testing, quality control, validation of cleaning procedures for normal and delicate garments, supplier acceptance testing, and research on solvent-based professional care.

Related standards

• ISO 3175‑1 - Assessment of performance after cleaning and finishing (referenced for property assessment)
• ISO 139 - Standard atmospheres for conditioning and testing
• ISO 3175 series - other parts covering procedures for different solvents and materials

Keywords: ISO 3175-6:2019, decamethylpentacyclosiloxane, D5, drycleaning, textiles, professional care, testing procedure, finishing, sensitive materials.