BS EN ISO 17226-2:2019

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Leather. Chemical determination of formaldehyde content – Method using colorimetric analysis

Published By	Publication Date	Number of Pages
BSI	2019	14

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Categories: 59.140.30 - Leather and furs, BSI

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Description

This document specifies a method for the determination of free and released formaldehyde in leathers. This method, based on colorimetric analysis, is not intended to be used for a precise quantification of formaldehyde.

The formaldehyde content is taken to be the quantity of free-formaldehyde and formaldehyde extracted through hydrolysis contained in a water extract from the leather under standard conditions.

This process is not absolutely selective for formaldehyde. Other compounds such as extracted dyes could interfere at 412 nm.

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PDF Pages	PDF Title
2	National foreword
4	European foreword
6	Foreword
7	1 Scope 2 Normative references 3 Terms and definitions 4 Conformance
8	5 Principle 6 Reagents 6.1 Reagents for the formaldehyde stock solution 6.2 Reagents for the colorimetric method 7 Apparatus
9	8 Procedures 8.1 Procedure for the determination of formaldehyde in the stock solution 8.1.1 Preparation of the formaldehyde stock solution 8.1.2 Determination
10	8.2 Procedure for the determination of formaldehyde in leather by the colorimetric method 8.2.1 Sampling and preparation of samples 8.2.2 Extraction 8.2.3 Reaction with acetylacetone 8.2.4 Checking reagents for absence of formaldehyde 8.2.5 Testing other compounds which cause a colouring with acetylacetone
11	8.2.6 Calibration 8.2.7 Calculation of the content of formaldehyde of the leather sample 8.2.8 Spiking and recovery rate
12	9 Expression of results 10 Test report
13	Annex A (informative) Precision: reliability of the colorimetric method

Additional information

Status	Under Review
Pages	14
Publication Date	2019-02-11
ISBN	978 0 580 98551 5
Standard Number	BS EN ISO 17226-2:2019
Title	Leather. Chemical determination of formaldehyde content – Method using colorimetric analysis
Identical National Standard Of	ISO 17226-2:2018, EN ISO 17226-2:2019
Replaces	BS EN ISO 17226-2:2008, BS EN ISO 17226-2:2008
Descriptors	Leather, Extraction methods of analysis, Aqueous extraction methods, Chemical analysis and testing, Formaldehyde, Determination of content, Photometry (chemical analysis)
Publisher	BSI
Committee	TCI/69
ICS Codes	59.140.30 - Leather and furs

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BS EN ISO 17226-2:2019

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