EN ISO 105-Z07:1997 PDF

Name: EN ISO 105-Z07:1997 — Textiles - Tests for colour fastness - Part Z07: Determination of application solubility and solution stability of water-soluble dyes (ISO 105-Z07:1995)
SKU: EN ISO 105-Z07:1997
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Textiles - Tests for colour fastness - Part Z07: Determination of application solubility and solution stability of water-soluble dyes (ISO 105-Z07:1995)

Название (английский):

EN ISO 105-Z07:1997

Textiles - Tests for colour fastness - Part Z07: Determination of application solubility and solution stability of water-soluble dyes (ISO 105-Z07:1995)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 17 сентября 1997 г.
Издание:: CEN EN 105 edition 1 version 1
ICS:: 59.080.01

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Описание (английский):

Describes a method for the determination of the application solubility of water-soluble dyes in the range 40 °C to 90 °C and of their solution stability. The method is not intended to measure absolute solubility.

Abstract

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Стандарты, упомянутые в описании

Overview

EN ISO 105‑Z07:1997 (ISO 105‑Z07:1995) specifies a laboratory method for determining the application solubility and solution stability of water‑soluble dyes used in textiles. The method covers testing in the temperature range 40 °C to 90 °C (application solubility is normally determined at 90 °C but lower temperatures may be used following manufacturer guidance). The procedure is intended to identify practical solubility limits under application conditions - it is not a method for measuring absolute thermodynamic solubility.

Key topics and technical requirements

Principle: Prepare a series of dye solutions of known concentration, heat and stir at the chosen dissolving temperature, then filter through a preheated heatable Nutsch (Büchner) filter and assess residues visually.

Solution stability: Determined by storing the prepared solution for 2 hours at the chosen storage temperature (e.g., 60 °C, 30 °C or 25 °C), then mixing and filtering to assess precipitate formation or change in flow characteristics.

Evaluation criteria:

Visual assessment of filter residues (dried filter) to determine the application solubility limit (reported in g/L).
Flow‑through time measured with a stopwatch; a sudden increase indicates exceeded solubility or unstable solution.

Apparatus & reagents (examples specified):

Wide‑mouthed Erlenmeyer flask (500 ml), thermostatic heating bath with magnetic stirrer, water bath for storage, heatable Nutsch filter (inner diameter ≈ 70 mm, capacity ≥ 200 ml), vacuum apparatus adjustable to 3–4 kPa (≈300–400 mm water), filter paper (70 mm ±2 mm), and analytical grade water (ISO 3696 grade 3).

Reporting: Test report must include standard reference, dye identification, filter type/manufacturer, application solubility limit with dissolving temperature (g/L), solution stability (g/L) with dissolving/storage temperatures, flow‑through time (if used), observations and any deviations from the procedure.

Practical applications and users

Quality control and R&D in textile dyeing to confirm suitable dye concentrations for application and to avoid precipitation during processing.

Dye manufacturers to characterize commercial product behavior under typical processing temperatures.

Independent textile test laboratories and certification bodies performing colour fastness and dye compatibility testing.

Process engineers and formulators who must set safe working concentrations and storage conditions for water‑soluble dyes.

Related standards

ISO 105 series (colour fastness tests)

ISO 1773 (laboratory boiling flasks)

ISO 3696 (water for analytical laboratory use)

ISO 105‑A01 (list of Parts in ISO 105)

Keywords: EN ISO 105‑Z07, ISO 105‑Z07:1995, water‑soluble dyes, application solubility, solution stability, textile dye testing, Nutsch filter, colour fastness tests.

EN ISO 105-Z07:1997 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications and users

Related standards

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