Toxicologie

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NIOSH French/WHO/International Program on Chemical Safety/Intern. Programme International sur la Sécurité des Substances Chimiques ICSCs en FRANÇAIS La version Internationale publiée en anglais par l'IPCS/Commission Européenne est la version de référence pour toutes les versions nationales.

NIOSH French/WHO/International Program on Chemical Safety/Intern

IPCS INCHEM. The Risk Assessment Information System. Sécurité et santé au travail : INRS. SIRI MSDS Index. [SIRI Home] --SIRI MSDS Index-- Some links to check for an MSDS direct from the manufacturer: Second, search our database.

SIRI MSDS Index

ITER. ITER is a free Internet database of human health risk values and cancer classifications for over 680 chemicals of environmental concern from multiple organizations worldwide.

ITER

ITER is the only database that presents risk data in a tabular format for easy comparison, along with a synopsis explaining differences in data and a link to each organization for more information. Search Original ITER. Welcome Page | Page d'accueil. NIOSH redirector /niosh/npg/npgd0000.html. Skip directly to local search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options CDC Home CDC 24/7: Saving Lives.

NIOSH redirector /niosh/npg/npgd0000.html

Protecting People. Institut National de l'Environnement Industriel et des Risques - TOXNET. Furetox, Moteur de recherche. TOXNET. Products & Services: CHEMINFO. Alert & Response Operations. Integrated Risk Information System (IRIS) Chemical Awareness. INCHEM SIDS. ATSDR HAP. ATSDR Home. INERIS - Institut National de l'Environnement Industriel et des. Chemical Reactivity Worksheet (CRW) | Planning for Environmental. The Chemical Reactivity Worksheet (CRW) is a free software program you can use to find out about the chemical reactivity of thousands of common hazardous chemicals.

Chemical Reactivity Worksheet (CRW) | Planning for Environmental

Download the Chemical Reactivity Worksheet for Windows, Mac, or iPad. Reactivity is the tendency of substances to undergo chemical change, which can result in hazards—such as heat generation or toxic gas byproducts. The CRW predicts possible hazards from mixing chemicals and is designed to be used by emergency responders and planners, as well as the chemical industry, to help prevent dangerous chemical incidents. The chemical datasheets in the CRW database contain information about the intrinsic hazards of each chemical and about whether a chemical reacts with air, water, or other materials. It also includes case histories on specific chemical incidents, with references. National Toxicology Program. Chélation. Un article de Wikipédia, l'encyclopédie libre.

Chélation

Complexe chélate de l'EDTA avec un cation métallique Le « chélate » se distingue du simple « complexe » par le fait que le cation métallique est fixé au chélateur par au moins deux liaisons de coordination définissant un cycle avec le métal, à la manière d'une pince, d'où le nom. Le nombre de liaisons métal-ligand qu'il est possible de former définit la « denticité » : on parle de coordinats bidentes, tridentes, tétradentes, etc, ainsi que de ligands monodentates, bidentates, polydentates. L’atome central est lié aux atomes voisins par au moins deux liaisons en formant une structure annulaire, un cycle chélate.

Les cycles chélates les plus stables sont les cycles chélates à 5 et à 6 chaînons.