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Revisions include corrections to scope wording, replacement of inhalation hazard rating tables, amendments to specific hazard classifications for chemicals such as diquat, and updates to HR values derived from acute toxicity and hazard classification data. 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the Workplace 3 rd Edition (2017)  \nCORRIGENDA  \nThe following list provides a description of the changes made to the publication since the original version was printed.  \nChapter 1: INTRODUCTION  \n1. Page 10, 1.1 SCOPE, first paragraph second sentence b):  \nDelete “2013” after “CLASS Regulations”Chapter 4: DETERMINE DEGREE OF HAZARD  \n2. Page 27, [4.2.1.1](4.2.1.1) Hazard rating – inhalation  \nReplace Table 1 with Table below  \nTable 1: Hazard Rating for Inhalation Exposure Based on Health Effect, Hazard Classification, H-code and Acute Toxicity Data  \n\n| HR | Health Effects | Hazard Classification |  | H-code | Acute toxicity |\n| --- | --- | --- | --- | --- | --- |\n| 5 | 􀁸 Injury of sufficient severity to threaten life by single exposure;\u003Cbr>􀁸 Causing fatality at low doses or concentration;\u003Cbr>􀁸 Severe irreversible effects (damage to target organ e.g. central nervous system effects, kidney necrosis, liver lesions, anaemia or paralysis) after a single exposure;\u003Cbr>􀁸 Known to have carcinogenic potential for humans;\u003Cbr>􀁸 Known to induce heritable mutations in the germ cells of humans;\u003Cbr>􀁸 Known human reproductive toxicant | Acute toxicity\u003Cbr>category 1 (inhalation) |  | H330 | LC50 ≤ 0.5 mg/l (vapours)\u003Cbr>LC50 ≤ 100 ppmV (gases)\u003Cbr>LC50 ≤ 0.05 mg/l (dusts/mists) |\n|  |  | Carcinogenicity category 1A |  | H350, H350i |  |\n|  |  | Mutagenicity category 1A |  | H340 |  |\n|  |  | Reproductive toxicity category 1A |  | H360,\u003Cbr>H360D,\u003Cbr>H360F,\u003Cbr>H360FD,\u003Cbr>H360Fd,\u003Cbr>H360Df |  |\n|  |  | Specific target organ toxicity – single exposure category 1 |  | H370 |  |\n| 4 | 􀁸 Injury of sufficient severity to cause permanent |  | Acute toxicity\u003Cbr>category 2 (inhalation) | H330 | 0.5 \u003C LC50 ≤ 2.0 mg/l (vapours) |\n\n\n| HR | Health Effects | Hazard Classification |  | H-code | Acute toxicity |\n| --- | --- | --- | --- | --- | --- |\n|  | impairment, disfigurement or irreversible change from single or repeated exposure.\u003Cbr>􀁸 Very serious physical or health impairment by repeated or prolonged exposure;\u003Cbr>􀁸 Serious damage to target organ from single exposure;\u003Cbr>􀁸 Presumed to have carcinogenic potential for humans;\u003Cbr>􀁸 Chemicals which should be regarded as if they induce heritable mutations in the germ cells of humans;\u003Cbr>􀁸 Presumed human reproductive toxicant | Carcinogenicity category 1B |  | H350, H350i | 100 \u003C LC50 ≤ 500 ppmV (gases)\u003Cbr>0.05 \u003C LC50 ≤ 0.5 mg/l (dusts/mists) |\n|  |  | Mutagenicity category 1B |  | H340 |  |\n|  |  | Reproductive toxicity category 1B |  | H360,\u003Cbr>H360D,\u003Cbr>H360F,\u003Cbr>H360FD,\u003Cbr>H360Fd,\u003Cbr>H360Df |  |\n|  |  | Effects on or via lactation |  | H362 |  |\n|  |  | Specific target organ toxicity – single exposure category 2 |  | H371 |  |\n|  |  | Specific target organ toxicity – repeated exposure category 1 |  | H372 |  |\n|  |  | Respiratory sensitisation category 1 |  | H334 |  |\n| 3 | 􀁸 Serious damage to target organ from repeated exposure;\u003Cbr>􀁸 Toxic effects after exposure;\u003Cbr>􀁸 Suspected human carcinogens;\u003Cbr>􀁸 Chemicals which cause concern for humans owing to the possibility that they may induce heritable mutations in the germ cells of humans;\u003Cbr>􀁸 Suspected human reproductive toxicant;\u003Cbr>􀁸 Effect to respiratory tract after single exposure. | Acute toxicity\u003Cbr>category 3 (inhalation) |  | H331 | 2 \u003C LC50 ≤ 10 mg/l (vapours)\u003Cbr>500 \u003C LC50 ≤ 2500 ppmV (gases)\u003Cbr>0.5 \u003C LC50 ≤ 1 mg/l (dusts/mists) |\n|  |  | Carcinogenicity category 2 |  | H351 |  |\n|  |  | Mutagenicity category 2 |  | H341 |  |\n|  |  | Reproductive toxicity category 2 |  | H361, H361f,\u003Cbr>H361d,\u003Cbr>H361fd |  |\n|  |  | Specific target organ toxicity – repeated exposure category 2 |  | H373 |  |\n|  |  | Specific target organ toxicity – single exposure category 3 (respiratory tract irritation) |  | H335 |  |\n| 2 | 􀁸 Reversible effects, not severe enough to cause |  | Acute toxicity\u003Cbr>category 4 (inhalation) | H332 | 10 \u003C LC50 ≤ 20 mg","cbCainQmHgxIsW8H","https://ap.wps.com/l/cbCainQmHgxIsW8H","pdf",800988,"English","# Corrigenda\n## Chapter 1: Introduction\n## Chapter 4: Determine Degree of Hazard\n## Chapter 7: Control Measures\n## Chapter 8: Exposure Monitoring Programme\n## Chapter 9: Medical Surveillance Programme\n## Chapter 10: Conclude, Recommend and Prioritise","[{\"question\":\"What changes are documented in the corrigenda section?\",\"answer\":\"The corrigenda lists specific textual and data updates made since the original publication was printed, spanning multiple chapters and figures.\"},{\"question\":\"What was corrected in the inhalation hazard rating table update?\",\"answer\":\"The corrigenda replaces the inhalation hazard rating table (Table 1) with revised content linking health effects, hazard classifications, H-codes, and acute toxicity data.\"},{\"question\":\"Which programme and figure elements were revised for medical surveillance and exposure monitoring?\",\"answer\":\"The corrigenda updates exposure monitoring figure labels and adds “/BEL,” and replaces the medical surveillance figure while removing a note labeled “EM: Exposure monitoring.”\"}]","A Manual of Recommended Practice on Assessment of Health Risks Arising from the Use of Chemicals Hazardous to Health at the Workplace - Corrigenda - Chapter 1 to Chapter 10 | PDF",1789963117,15]