GHS Classification Guidance for the Japanese Government

TABLE OF CONTENTS
Part1 Introduction.................................................................................................................1
1-1. Regarding "GHS Classification Guidance" ...........................................................................1
1-2. Method of describing classification results ...........................................................................3
1-3. Workflow of GHS classification............................................................................................4
Part2. Physical Hazards Guidance......................................................................................9
2-1. Sources of information available for classification and judgment.........................................9
2-1-1 Information directly applicable to GHS classification (Classification according to the
United Nations Recommendations on the Transport of Dangerous Goods) ..................9
2-1-2 Data collection systems of physical properties.............................................................10
2-1-3 Data collections of physicochemical hazard data.........................................................13
2-1-4 Reference materials ......................................................................................................16
2-2. Classification of Physical Hazards based on physical, chemical states and chemical
structure ..............................................................................................................................18
2-2-0 Introduction ..................................................................................................................18
2-2-1 Physicochemical definitions in GHS............................................................................18
2-2-2 Gases ............................................................................................................................18
2-2-3 Liquids..........................................................................................................................18
2-2-4Solids.............................................................................................................................19
2-2-5 Selection of assessment items according to chemical structure....................................19
2-2-6 Chemical groups related to explosibility ......................................................................21
2-2-7 Chemical groups related to self-reactivity....................................................................21
2-2-8 Guidance for classification and examples of classification results indication..............22
2-3. Classification and details of physical hazards .....................................................................34
2-3-1 Explosives ....................................................................................................................34
2-3-2 Flammable Gases .........................................................................................................42
2-3-3 Flammable Aerosols .....................................................................................................44
2-3-4 Oxidizing Gases ...........................................................................................................46
2-3-5 Gases Under Pressure ...................................................................................................49
2-3-6 Flammable Liquids.......................................................................................................51
2-3-7 Flammable Solids .........................................................................................................54
2-3-8 Self-reactive Substances and Mixtures.........................................................................57
2-3-9 Pyrophoric Liquids .......................................................................................................62
2-3-10 Pyrophoric Solids .......................................................................................................64
2-3-11 Self-heating Substances and Mixtures........................................................................66