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Contents

List of Figures xv List of Tables xvii List of Contributors xix Introduction xxi 1. Introduction: Policy and Scientific Context of Chemicals Risk and Risk Management 1 1.1 Overview of the Risk Assessment of Chemical Substances 4 1.2 Chemical Hazard and Risk Programmes 5 1.2.1 REACH Overview 5 1.2.2 Registration 6 1.2.3 Evaluation 8 1.2.4 Authorisation and Restriction 11 1.2.5 Hazard and Risk Communication 14 1.2.6 Hazards 16 1.2.7 Overview of Types of Exposure 17 1.2.8 Overview of Risk Characterisation 19 1.2.9 Successful Interaction with REACH: Registration, Evaluation and Authorisation 21 1.2.10 Regulation and Assessment of Hazardous Chemicals Outside of the European Union 24 2. Roles and Responsibilities in REACH 39 2.1 The Structure and Responsibilities of the Authorities 39 2.1.1 Role of the ECHA 39 2.1.2 The Role of the Member State Committee (MSC) 40 2.1.3 The Role of the Member State Competent Authorities (MSCA) 40 2.2 Forum Enforcement Project REACH-EN-FORCE-1 41 2.3 Future Aims of the HSE (an Example of a ECHA-Related Authority Acting in the UK) 41 2.4 What Does REACH Require as Regards Enforcement? 41 2.5 What Powers Do Enforcing Authorities Have? 42 2.6 The Responsibilities of Industry 42 2.6.1 Responsibilities of the Manufacturer 42 2.6.2 Responsibilities of the Importer 43 2.6.3 The Only Representative 43 2.6.4 Responsibilities of the Downstream User 43 2.7 Communication in the Supply Chain and with Regulators 44 2.7.1 Use Descriptor System 44 3. Control of Chemicals Legislative and Policy Context 57 3.1 How EU Chemical Legislation Evolved 57 3.2 Air Quality Regulations 63 3.3 Water Framework Directive 64 3.4 Carcinogens at Work 65 3.5 Cosmetics 66 3.6 Biocidal and Plant Protection Products 67 3.7 Nationally (UK)-Implemented Legislative and Policy Frameworks 68 3.7.1 Workplace Exposure 68 3.7.2 Control of Substances Hazardous to Health Regulations (COSHH) 2002 69 3.7.3 Dangerous Substances and Explosive Atmospheres Regulations (DSEAR) 2002 72 3.8 UK Environmental Regulation 74 3.8.1 Overview and IPPC 74 3.8.2 Waste (England and Wales) Regulations 2011 SI 988 75 3.8.3 Water Legislation in the UK 75 3.8.4 Directive 2006/118/EC on the Protection of Groundwater against Pollution and Deterioration 77 3.8.5 Groundwater (England and Wales) Regulations 2009 (SI 2009 No. 2902) 77 3.8.6 Air Legislation in the UK 77 4. Identification of Substances for REACH Practicalities 81 4.1 Substance Identification 81 4.1.1 Types of Substances 82 4.1.2 Mono-Constituent Substances 82 4.1.3 Multi-Constituent Substances (MCSs) 82 4.1.4 Substances with Unknown or Variable Composition, or of Biological Origin (UVCBs) 82 4.1.5 Nanomaterials 83 4.1.6 Articles 84 4.1.7 EC Number 84 4.2 Sameness 85 4.3 Essentially-Pure Substances 85 4.4 Approaching the Substance Data Set Understanding the Substance 86 5. Physico-Chemical Properties for REACH Purpose and Practicalities 89 5.1 Physico-Chemical Properties 89 5.2 Strategy in Physico-Chemical Testing Plans 91 5.2.1 Tier 1 Tests 91 5.2.2 Tier 2 Tests 92 5.2.3 Tier 3 Tests 93 5.3 Difficult-to-Measure Substances 94 5.3.1 Multiconstituent or UVCB Substances (Mixtures) 94 5.3.2 Poorly Soluble Substances 94 5.3.3 Volatile Substances 94 5.3.4 Unstable Substances Either by Hydrolysis, Photolysis or Oxidation 94 5.3.5 Ionisable Substances 95 5.3.6 Surface Active Substances 95 5.4 Hazardous Physico-Chemical Data 95 5.5 Relationship between Physico-Chemical Tests 95 5.6 Application of Physico-Chemical Test Data 96 5.7 Can Physico-Chemical Tests Be Omitted? 96 5.8 (Q)SAR and Physico-Chemical Tests 97 5.9 (Quantitative) Structure-Activity Relationships ((Q)SAR) 97 6. Assessing and Documenting the Intrinsic Properties of Substances in REACH 103 6.1 Introduction to REACH Data Requirements 103 6.1.1 Strictly Controlled Conditions 104 6.2 Hazards 108 6.3 PBT 108 6.4 Equivalent Concern 109 6.4.1 Adversity 109 6.4.2 Mode of Action 110 6.5 Test Proposal Rule 110 6.6 Availability of Existing Data and Rights of Access 111 6.7 Data Reliability 111 6.8 Data Gaps Options for Surrogate Data for Description of Hazard and Risk Including Read-Across 111 6.9 Read-Across 113 7. Assessing Environmental Properties Data 115 7.1 Environmental Properties Data 115 7.1.1 PNECs 115 7.1.2 Classification and Labelling (C&L) 116 7.1.3 PBT 116 7.2 Environmental Fate 116 7.2.1 Degradation 117 7.2.2 Bioaccumulation 120 7.2.3 Adsorption 121 7.3 Ecotoxicology 123 7.3.1 Introduction 123 7.3.2 Hazard Assessment and Risk Characterisation 123 7.3.3 Data Review 127 7.3.4 Testing of Difficult Substances 127 7.3.5 (Q)SARs, Data Waiving and EPM 128 7.3.6 Further Testing 129 7.3.7 Toxicity to Sewage Treatment Plant Microorganisms 129 7.4 Turning Intrinsic Properties into No-Effect Concentrations 130 7.4.1 Selecting a Suitable Starting Point for a PNEC Calculation 131 7.4.2 Calculating a PNEC Using Assessment Factors 131 7.4.3 Calculating a PNEC Using Sensitivity Distribution 133 7.4.4 Calculating a PNEC Using Equilibrium Partitioning 133 7.4.5 Intermittent versus Continuous Releases 134 8. Environmental Exposure 137 8.1 Substance Identity and Approach to Exposure Assessment 137 8.2 Characterising Releases 138 8.2.1 Evaluating Use Pattern 138 8.3 Evaluating Releases 139 8.3.1 Reality Checking Top Down and Bottom Up 141 8.4 Documentation for the Registration 142 8.4.1 Uncertainty 142 8.5 Local Scale Releases 142 8.5.1 Site Size 142 8.5.2 Site Inspections 143 8.6 Exposure Assessment Models or Measurements? 143 8.6.1 Using Measurements 143 8.6.2 Using Models 145 8.6.3 Models or Measurements Recommended Approach 145 8.6.4 Tools 145 8.7 Water 146 8.7.1 Release via Waste-Water 146 8.7.2 River Environment 148 8.7.3 Marine Environment 149 8.7.4 Sediments 149 8.8 Soil 149 8.8.1 WWTP Sludge and Agricultural Soil 149 8.8.2 Deposition 149 8.8.3 Biodegradation in Soil 150 8.8.4 Crops and Grassland 150 8.8.5 Industrial Soil 150 8.9 Air 150 8.9.1 Air in the Standard PEC Models 150 8.9.2 Ozone Depletion and Other Specific Effects 150 8.9.3 Long Range Pollutants 151 8.10 The Food Chain 151 8.10.1 Biomagnification 151 8.10.2 Secondary Poisoning 151 9. Assessing the Hazards to Human Health from Chemicals 153 9.1 Mammalian Toxicology 153 9.2 Exposure Routes and Local/Systemic Effect Types 153 9.3 Acute and Chronic Effects 154 9.4 Influences on Toxicity 154 9.5 How Chemicals Cause Harm 155 9.5.1 Asphyxiants 155 9.5.2 Narcotics 155 9.5.3 Irritants and Corrosives 155 9.5.4 Sensitisation (Allergic Reactions) 156 9.5.5 Carcinogenicity 156 9.5.6 Genotoxic Effects 157 9.5.7 Reproductive and Developmental Effects 157 9.5.8 Target Organ Effects 157 9.6 Toxicokinetics 157 9.7 Toxicological Testing 158 9.7.1 Data Gaps 159 9.7.2 Data Waiving 159 9.7.3 Acute Toxicity Studies 159 9.7.4 Short-Term, Repeated Dose Studies 160 9.7.5 Long-Term (Chronic) Studies 160 9.7.6 Other Systemic Effects 161 9.7.7 Local Effects 162 9.8 Genetic Toxicology 162 9.8.1 Introduction 162 9.8.2 Hazard Assessment 163 9.8.3 Risk Assessment 166 9.9 Turning Intrinsic Properties into No-Effect Levels 166 9.9.1 Special Cases 169 10. Human Exposure to Chemicals 171 10.1 Exposure 171 10.2 Exposure to Chemicals in the Workplace 173 10.2.1 First Tier Models 173 10.2.2 Higher Tier Models 174 10.2.3 Risk Management Measures 174 10.2.4 Exposure in the Professional Use Setting 175 10.2.5 Models 176 10.2.6 Measurements 178 10.3 Risk Management Measures 179 10.4 Consumer Exposure 179 10.4.1 General Considerations for Exposure Estimation for Consumers 180 10.4.2 Tier 1 Models 180 10.4.3 Refinement of Initial Exposure Estimates, Higher Tier Models and Measurements 181 10.4.4 Risk Management Measures Consumers 181 10.5 Indirect Exposure (Humans via the Environment) 182 10.6 Risk due to Physico-Chemical Hazard 182 11. Managing Hazard and Risk 185 11.1 Characterisation, Assessment and Management of Risk 185 11.2 What Is Risk under REACH? 186 11.3 What Are Risk Reduction and Risk Management? 187 11.3.1 Risk 187 11.3.2 How Can Risks Be Controlled Adequately? 189 11.4 Where Safe Levels Cannot Be Established CMRs and PBTs (and vPvBs) 190 11.5 Responsibilities in the Supply Chain Introduction 190 11.6 Regulatory Requirements 191 11.7 Guidance 193 11.8 The Extended Safety Data Sheet 193 11.8.1 Current issues surrounding the use of eSDS by DUs 194 11.9 When Communication Is Difficult 194 11.10 Exposure Measurements in the Workplace Occupational Hygiene 195 11.11 Control of Environmental Releases Abatement Techniques 196 11.11.1 Engineering Controls 196 11.11.2 Enclosure and Containment 197 11.11.3 Bunding 197 11.11.4 Dedicated Equipment 197 11.11.5 Investment and Scale of Use Economic Viability 197 11.11.6 Waste Stream Treatments 197 11.11.7 WWTP Treatments 198 11.11.8 Custom and Practise 198 11.11.9 Handling Standards 198 11.11.10 Clean-Down Practises 198 11.12 Effectiveness of Risk Reduction Risk Management Options 200 11.13 Types of Risk Management in the Workplace 201 11.13.1 Options Overview 202 11.13.2 Understanding Assumptions and Critical Issues 202 11.13.3 Risk Management Measures 202 11.14 Types of Risk Management for the Environment 203 11.14.1 Unacceptable Risk 203 11.14.2 Options Overview 203 11.14.3 When a Data Set Is Not Complete 204 11.14.4 When a Data Set Is as Complete as It Can Be 204 11.14.5 Understanding Assumptions and Critical Issues 204 11.14.6 Strategies to Reduce the Amount of Substance Released to the Environment 204 11.15 Consumer Protection 205 12. Avoiding the Use of Hazardous Substances: Substitution and Alternatives 207 12.1 Properties That Contribute to Hazard and Risk for Human Health and the Environment 209 12.2 Assessment of Alternatives Replacement of Use 210 12.3 What Is an Alternative? 211 12.4 Analysis of Alternatives 211 12.5 Substitution Replacement with Substances of Reduced Hazard 211 12.5.1 Examples of Voluntary Substitution 212 12.5.2 Regulation-Led Substitution Case Studies 213 12.6 Sustainability and Green Chemistry 218 12.7 What Is Green Chemistry in Practice? Principles and Concepts 219 12.7.1 Why Is Green Chemistry Important? 220 12.7.2 Research in Green Chemistry 220 12.7.3 Substance Design 220 12.7.4 Process Design 222 13. Hazards, Risks and Impacts The Development and Application of Frameworks for the Assessment of Risk 225 13.1 Policy Context Risk, Hazard and the Precautionary Principle 226 13.1.1 Assessment Frameworks Hazard and Risk and Impacts 230 13.1.2 Precaution Where No Safe Level Can Be Established 232 13.1.3 Application of Assessment Frameworks to Human Health and Environmental Protection 234 13.2 From Hazards to Risks to Impacts Understanding the Implications of Exposure to Dangerous Chemicals 235 13.2.1 Introduction: The Need for a Culture of Safety 236 13.2.2 Responsible Care(R) 238 13.2.3 Standards and Management Tools 239 13.2.4 Risk Control and Management 241 13.2.5 Risk Control and Management in REACH 241 13.3 Risk Management Options REACH Processes for Control of Hazardous and Risky Substances 244 13.3.1 Restrictions and Authorisations in REACH 244 13.3.2 Restrictions 246 13.3.3 Authorisations 247 14. Socio-Economic Analysis in REACH 251 14.1 Background the Need for and Development of Socio-Economic Analysis in the Regulation of Chemicals 253 14.2 What Is SEA and Why Is It Needed and Applied in REACH? 254 14.2.1 What Is SEA within REACH? 254 14.3 Role, Purpose and Performing an SEA in REACH 255 14.3.1 Role and Purpose of an SEA in REACH 255 14.3.2 Doing an SEA in REACH 256 14.4 The Difficulties of Moving from Risks to Impacts 256 14.5 Regulatory Processes Who Are the Decision Makers and What Are Their Roles? 265 14.6 The Wider Benefits of Performing an SEA 265 14.7 Developments and the Future 267 15. REACH: How It Is Working and May Develop 269 15.1 Introduction 269 15.2 Experiences and Observations 269 15.2.1 Observations 270 15.3 Basics of Successful Submission 271 15.4 Testing, Prediction and Read-Across 271 15.5 The Community Rolling Action Plan 272 15.6 EU and National Responsibilities 272 15.7 Risk-Based Regulation and the Precautionary Approach 272 15.8 Higher Tiers of Assessment 273 15.9 REACH Developments 274 15.9.1 Methods of Operation and Constant Change 274 15.9.2 Improved Efficiency of Operation 275 15.9.3 Increased Scope 275 15.9.4 Policy Development on the Control of Chemicals EU and Global Perspectives 276 15.10 Rationalising Overlap with Other Legislation 276 15.11 Scientific Developments and Challenges 278 15.12 Impact on Industry 278 15.12.1 Manufacturers and Importers 278 15.12.2 Downstream Users and Consumers 278 15.12.3 Innovation 279 15.13 ECHA Evaluation Report 2012 279 16. Resources, Official Guidance, Further Reading and Centres of Expertise 283 16.1 Introduction to Resources and Organisations 283 16.1.1 Official Journal 283 16.1.2 ECHA and REACH-IT 284 16.1.3 CEFIC and Sector Groups 285 16.1.4 IUCLID Guidance 285 16.1.5 ECETOC 286 16.1.6 OECD 286 16.1.7 EU JRC 286 16.2 Facts and Statistics 286 Appendix A Substance Classification and Labelling under REACH 317 A.1 Important Differences 319 A.1.1 Physico-Chemical Hazards 320 A.1.2 Health Hazards 320 A.1.3 Environmental Hazards 321 A.1.4 Supplementary Labelling Requirements under the CLP Regulations 321 A.2 CLP Symbols 322 A.2.1 Comparison of DSP/DPD with CLP 2008 325 A.3 Specific Target Organ Systemic Toxicity Single Exposure 334 A.3.1 Carcinogenic Substances 335 A.3.2 Mutagenic Substances 337 A.3.3 Effect during Lactation 337 A.3.4 Aquatic Environment 338 A.3.5 Ozone 338 A.4 Harmonised Classification and Labelling 339 Appendix B Further Discussion of Substance Identification and Sameness 341 B.1 Substance Identifiers 341 B.1.1 EC Name 341 B.1.2 CAS Registry Number (CAS# or CAS No.) 341 B.1.3 SMILES 341 B.1.4 InChI 342 B.2 Substance Analysis 342 B.2.1 Sameness 343 B.2.2 Impurities 344 B.2.3 Departures from the Agreed Norm 344 B.3 Straightforward Organic Substances 345 B.3.1 Identity 345 B.3.2 Purity and Characterisation 346 B.4 Complex Organic Substances 347 B.5 Inorganic Substances 348 B.5.1 Structure 349 B.5.2 Elemental Quantification 349 B.6 Analysis of UVCBs 349 Appendix C Tools for REACH Compliance: IUCLID, Chesar and In-House Databases 351 C.1 International Uniform Chemical Information Database (IUCLID) 351 C.2 IUCLID and PPORDs 354 C.3 Submission of PPORD to ECHA 354 C.3.1 IUCLID Submission 354 C.3.2 Notification by REACH-IT 355 C.4 Chesar 356 C.4.1 Introduction 356 C.4.2 Chesar Functionalities or Organisation of the Tool 356 C.4.3 Assessment workflow of Chesar 358 C.5 Advice on Storing of Data Outside of the IUCLID 358 C.5.1 Structure 359 C.5.2 Identifiers 360 C.5.3 Mechanistic Issues 360 C.5.4 Identification and Expression of Substance Identity 361 C.5.5 Result Values 361 C.5.6 SMILES and Textual Representations of Structure 361 C.5.7 Modifications to the Data Set 361 C.5.8 Composited Fields and Repeated Processes 361 C.5.9 Duplicates 362 C.5.10 Validation 362 C.5.11 Checking 363 C.5.12 Study Reports and Cataloguing 363 C.5.13 Snapshots and Backups 364 Appendix D Glossary 365 Index 383

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