ISO 5433:2022 PDF
Leather — Bovine wet blue — Specification
Leather — Bovine wet blue — Specification
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 6
- Дата публикации:
- 18 ноября 2022 г.
- Издание:
- ISO IS 5433 edition 3 version 1
- ICS:
- 59.140.30
This document specifies requirements, sampling methods and testing methods for wet blue leather produced from bovine hides and parts of bovine hides tanned without hair and with the use of basic chromium sulfate as the primary tanning agent.
Abstract
Overview
ISO 5433:2022 - Leather - Bovine wet blue - Specification defines requirements, sampling and test methods for bovine wet blue leather tanned primarily with basic chromium sulfate. This third edition (2022) replaces ISO 5433:2013 and provides standardized criteria for raw material, tanning, presentation, chemical limits, shrinkage temperature, fungicide use, sampling, testing, packaging and marking of wet blue bovine hides and parts.
Key topics and technical requirements
- Tanning: Must use basic chromium sulfate as the primary tanning agent; visual inspection shall show complete penetration by the bluish chromium color. Tanning carried out at pH ≥ 3.0.
- Shrinkage temperature: Measured per ISO 3380. Minimums: ≥ 85 °C for low chrome tannage and ≥ 100 °C for full chrome tannage. Chromic oxide content guidance links to these requirements.
- Chemical requirements (Table 2):
- Volatile matter: > 50% of dry mass (or as agreed)
- Matter soluble in dichloromethane:
Технические детали
- Технический комитет
- ISO/TC 120/SC 2 - Tanned leather
- SKU
- ISO 5433:2022
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