ECHA maintains the C&L Inventory, but does not review or verify the accuracy of the information. The CLP Regulation ensures that the hazards presented by chemicals are clearly communicated to workers and consumers in the European Union through classification and labelling of chemicals. Print infocard. Harmonised classification and labelling is a legally binding classification and labelling for a substance, agreed at European Community level. The InfoCard summarises the non-confidential data of a substance held in the databases of the European Chemicals Agency (ECHA). English-Tamil dictionary. Those quantities of S were coincident with their catalytic activities for the reactions of methanol and butane. If at least one company has indicated that the substance classification is affected by impurities or additives, this will be indicated by an informative sentence. Training with a lot of lactic acid in your system stimulates your body to produce enzymes that speed the use of lactic acid as a fuel. This information has not been reviewed or verified by ECHA, and may change without prior notice. The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. If the substance is covered by more than one CLH entry (e.g. The type of uses and classifications may vary between different submissions to ECHA and for a full understanding it is recommended to consult the source data. This substance has been found in the following regulatory activities (directly, or inheriting the regulatory context of a parent substance): Welcome to the ECHA website. REACH registered substance data was upgraded on 9th November. The materials with small quantities of W gave their highest activities in the high temperature range of calcination, indicating the following tendency; the lower the quantity, the higher was the temperature showing the highest activity: 900, 1000, 1100, 1150, and 1250 °C for the materials with 20, 10, 5, 2, and 1 wt.% W, respectively. The ‘Substance identity’ section is calculated from substance identification information from all ECHA databases. Occupational exposure limit (OEL) values are derived within two legal frameworks that form an integral part of the EU’s mechanism for protecting the health of workers. The thermal analysis determined the sulfur value in the catalyst to be 1.7, 2.6, 5.7, and 5.6 wt.% S for the materials prepared by sulfation with 0.5, 1.5, 3, and 6 M concentrations of H2SO4, followed by calcination at 300 °C, respectively. metastannic acid rus. metastannic acid — metastanato rūgštis statusas T sritis chemija formulė H₂SnO₃ atitikmenys: angl. The CLP Regulation ensures that the hazards presented by chemicals are clearly communicated to workers and consumers in the European Union through classification and labelling of chemicals. The Support section provides tools and practical guidance to companies which have responsibilities under the EU chemicals legislation. The Prior Informed Consent Regulation administers the import and export of certain hazardous chemicals and places obligations on companies who wish to export these chemicals to non-EU countries. InfoCards are generated automatically based on the data available at the time of generation. (I) Commercially pure tin is treated with nitric acid, which converts the tin proper into the insoluble metastannic acid, while the copper, iron, &c., become nitrates; the metastannic acid is washed first with dilute nitric acid, … Information on applicable regulatory frameworks is also automatically generated and may not be complete or up to date. The ore, cassiterite, which is mainly SnO2, is the main source of tin. The POPs Regulation bans or severely restricts the production and use of persistent organic pollutants in the European Union. It covers their hazardous properties, classification and labelling, and information on how to use them safely. метаоловянная кислота ryšiai: sinonimas – vandenilio trioksostanatas (2–) … Chemijos terminų aiškinamasis žodynas Alfa Chemistry is the world's leading provider for special chemicals. Tungstated stannia (WO3/SnO2) was obtained by impregnating meta-stannic acid (Koujundo Kagaku Ltd.) with aqueous ammonium metatungstate (1–80 wt.% W) followed by calcining in air; the materials were examined in the dehydrations of methanol and ethanol and the isomerization of cycloheptane to methylcyclohexane. The substance identifiers displayed in the InfoCard are the best available substance name, EC number, CAS number and/or the molecular and structural formulas. Filtering, Siphoning, Melting, Etc. 1, 2] enthalpy of formation based on version 1.118 of the Thermochemical Network This version of ATcT results was partially described in Ruscic et al. Sulfated and tungstated stannias were prepared from commercial Sn-gels of meta-stannic acids; the former showed catalytic activities higher than those of the materials obtained from conventional gels and of sulfated zirconias.The latter led to the synthesis of a ceramics acid, calcined at >1000 °C, whose catalytic activity and acidity were intermediate between mordenite and silica–alumina.

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