Foreword
0 Introduction
1 Scope
2 Normative references
3 Description
3.1 Identification
3.2 Commercial forms
3.3 Physical properties
3.4 Chemical properties
4 Purity criteria
4.1 Composition of commercial product
4.2 Impurities and main by-products
4.3 Toxic substances
5 Test methods
5.1 Sampling
5.2 Analyses
6 Labelling - transportation - storage
6.1 Means of delivery
6.2 Risk and safety labelling according to the EC rules
6.3 Transportation regulations
6.4 Marking
6.5 Storage
Annex A (informative) General information on sulfur
dioxide
A.1 Origin
A.2 Use
A.3 Rules for safe handling and use
A.4 Emergency procedures
Annex B (informative) Bibliography