{"id":12776,"date":"2022-04-18T10:00:36","date_gmt":"2022-04-18T08:00:36","guid":{"rendered":"https:\/\/www.gesi.de\/en\/?p=12776"},"modified":"2024-07-12T16:06:39","modified_gmt":"2024-07-12T14:06:39","slug":"the-cleavage-model-physical-chemical-action-part-5","status":"publish","type":"post","link":"https:\/\/www.gesi.de\/en\/the-cleavage-model-physical-chemical-action-part-5\/","title":{"rendered":"The Column Model &#8211; Physico-Chemical Effects (Part 5)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.gesi.de\/en\/blog\/2022\/04\/04\/the-column-model\u2026l-hazards-part-4\/\" target=\"_blank\" rel=\"noopener\">column model<\/a> of TRGS 600 [1] as an assistance for the substitution check is already explained in several blog posts. I already introduced the columns dealing with health and <a href=\"https:\/\/www.gesi.de\/en\/blog\/2022\/02\/21\/the-column-model-part-1\/\" target=\"_blank\" rel=\"noopener\">environmental hazards<\/a>. We now switch to hazardous substances that represent a hazard due to their physico-chemical effects.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Physico-chemical effects (column 4)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Column 4 of the column model deals with the physical-chemical hazards posed by the substances. If the substance is explosive, flammable or corrosive to metals, for example, it is classified accordingly in the categories of the column model from &#8220;Very high hazard&#8221; to &#8220;Negligible hazard&#8221;. The categorisation is again somewhat easier here, as essentially H and EUH phrases are relevant. In the following, I would like to list some relevant properties and their classification in the column model. The list of all points can be found in TRGS 600 [1].<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Very high and high hazard<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Substances with <strong>very high<\/strong> physico-chemical effects are, for example, explosive substances labelled with H phrases 200, 201, 202, 203, 204 or 205. Flammable gases (H220, 221) or organic peroxides of types A and B (H240, 241) are also classified accordingly. A total of 17 H phrases of different hazard classes are classified as very high hazard. These H phrases mostly belong to the more severe hazard categories 1 resp. A or B. For example, flammable liquids of category 1 (H224) are rated as a very high hazard.<br>Flammable liquids of category 2 (H225), organic peroxides of types C and D (H242) or aerosols of category 1 (H222 and H229) are some examples of <strong>high<\/strong> hazard classification. Various EUH phrases are also considered (EUH014, EUH018, EUH019, EUH044).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Medium and low hazard<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As expected, we continue with the less hazardous hazard categories. For example, flammable liquids of category 3 (H226), organic peroxides of types E and F (H242) or aerosols of category 2 (H223 and H229) are classified as <strong>medium<\/strong> hazards. Substances corrosive to metals (H290) are also in this level.<br>Only one H phrase (H229 without H222 or H223) is relevant for the classification of a <strong>low<\/strong> physical-chemical effect, this refers to aerosols, category 3. In addition, self-reactive substances, type G, and organic peroxides, type G, can be found here.&nbsp; Both, however, do not have an H phrase. Another criterion is the flash point of the substance. If this is between 60 and 100 \u00b0C, it is a substance of low flammability, which is also considered a low hazard.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Negligible hazard<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For some substances the flash point is even higher, i.e. above 100 \u00b0C. In this case, the substances are incombustible or only so hardly flammable that this is considered a <strong>negligible<\/strong> physical-chemical action.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you have the safety data sheet of the hazardous substance, it is not difficult to classify it according to the H phrases in the column model. You can also find the EUH phrases or information on the flash point here. It gets more difficult if, for example, an H phrase indicates a very high physico-chemical effect, but the flash point is so high that this is assessed as negligible. In such a case, the highest hazard within the column should be used for comparison with other substances. For more information you are welcome to visit the website of our <a href=\"https:\/\/www.gesi.de\/en\/hazardous-substances\/\" target=\"_blank\" rel=\"noopener\">GefStoff-Profi<\/a>. There you will see how the GeSi\u00b3 software solution supports you in hazardous substance management.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sources:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em><a href=\"https:\/\/www.baua.de\/EN\/Service\/Legislative-texts-and-technical-rules\/Rules\/TRGS\/pdf\/TRGS-600.pdf?__blob=publicationFile&amp;v=1\" target=\"_blank\" rel=\"noopener\">[1]<\/a> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Technical Rules for Hazardous Substances, TRGS 600, version 29.10.2020, BAuA website.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The column model of TRGS 600 [1] as an assistance for the substitution check is already explained in several blog posts. I already introduced the columns dealing with health and [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":19019,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"footnotes":""},"categories":[1165],"tags":[880,1036,1162],"class_list":["post-12776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hazardous-substance-administration","tag-comparison-of-hazardous-substances-en","tag-physical-chemical-actions-en","tag-risk-assesment"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The Column Model - Physico-Chemical Effects (Part 5) - GeSi<\/title>\n<meta name=\"description\" content=\"Column 4 &quot;Physico-Chemical Effects&quot; 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