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.[ SIRI Home ] --SIRI MSDS Index-- Some links to check for an MSDS direct from the manufacturer: Second, search our database
SIRI MSDS Index
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 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
ITER
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Alert & Response Operations
WHO continues to track the evolving infectious disease situation, sound the alarm when needed, share expertise, and mount the kind of response needed to protect populations from the consequences of epidemics, whatever and wherever might be their origin. :: International Health Regulations (IHR) – Operational aspects The International Health Regulations (2005) or "IHR (2005)" have been in force since 15 June 2007. The purpose and scope of the IHR (2005) are to prevent, protect against, control and provide a public health response to the international spread of disease in ways that are commensurate with and restricted to public health risks, and which avoid unnecessary interference with international traffic and trade.
EPA's Integrated Risk Information System (IRIS) is a human health assessment program that evaluates information on health effects that may result from exposure to environmental contaminants. Through the IRIS Program, EPA provides the highest quality science-based human health assessments to support the Agency's regulatory activities. The IRIS database is web accessible and contains information on more than 550 chemical substances. Learn more .
Integrated Risk Information System (IRIS)
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. (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. You can also create your own custom chemical datasheets, as you might do, for instance, if your facility produces a proprietary chemical that is not in the CRW database.
Chemical Reactivity Worksheet (CRW) | Planning for Environmental
Chélation
Un article de Wikipédia, l'encyclopédie libre. Complexe chélate de l' EDTA avec un cation métallique La chélation (prononcer kélassion, du grec khêlê : « pince ») est un processus physico-chimique au cours duquel est formé un complexe , le chélate, entre un ligand , dit chélateur (ou chélatant), et un cation (ou atome) métallique , alors complexé, dit chélaté. 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.