Le règlement POP interdit ou limite fortement la production et l’utilisation de polluants organiques persistants dans l’Union européenne. Release to the environment of this substance can occur from industrial use: manufacturing of the substance, as processing aid, formulation of mixtures, formulation in materials, in processing aids at industrial sites, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), as processing aid and for thermoplastic manufacture. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use. This section provides an overview of the calculated volume at which the substance is manufactured or imported to the European Economic Area (EU28 + Iceland, Liechtenstein and Norway). These sponges exhibit superhydrophilicity and superoleophilicity. Veuillez mettre à jour Internet Explorer. If available, additional information on classification and labelling (C&L) is derived from REACH registration dossiers submitted by industry. The EC or list number is the primary substance identifier used by ECHA. Release to the environment of this substance can occur from industrial use: formulation of mixtures. Melamine sponge is a commercially available 3-dimensional porous material consisting of a formaldehyde-melamine-sodium bisulfite copolymer. Because the manufacture of melamine requires urea, melamine production plants are often located near a urea production plant. MUF and MF resins are more resistant to moist environments than are UF resins. Real sentences showing how to use Melamine correctly. Melamine synthesis can be carried out by two different ways: (i) liquid-phase reaction under high-pressure, noncatalytic conditions and (ii) gas-phase reaction under low-pressure, catalytic conditions. These derivatives have higher decomposition temperatures (melamine cyanurate (MC), 310 °C; melamine polyphosphate (MPP), 360 °C) in comparison to melamine (250 °C) alone, are less soluble in water, and can add other features to performance such as nondripping (cyanuric acid) or char formation (boric acid, phosphoric acid). Warning! The ‘Hazard classification’ and labelling section uses the signal word, pictogram(s) and hazard statements of the substance under the harmonised classification and labelling (CLH) as its primary source of information. The information is aggregated from the data coming from REACH substance registrations provided by industry. However, melamine is much more expensive than urea. The per substance REACH registration status is being calculated and will be made available as soon as possible. Jahromi demonstrated that MPP depolymerizes at above 350 °C, inducing significant cross-linking (as evidenced by increase in viscosity) in PA 66 and leading to a drastic depolymerization of PA 6 (as evidenced by a decrease in viscosity) [29]. Pssst… we can write an original … Look for models with a reinforced rim and foot for additional durability. A substance may have its use restricted to certain articles or products and therefore not all the examples may apply to the specific substance. Il s’agit d’une source d’informations unique sur les substances chimiques fabriquées et importées en Europe. L’ECHA organise des consultations afin de recevoir un retour d’information de la part de toutes les parties intéressées et de rassembler l’éventail le plus large possible d’informations scientifiques pour les processus réglementaires. inside a watch) or with very low concentrations considered not to pose risks to human health or the environment. Snider, in Encyclopedia of Toxicology (Third Edition), 2014. 1. The electric applications are numerous, due to the good insulating properties, the arc resistance and the fire ratings. This substance is used in the following products: laboratory chemicals, coating products and polymers. It is made from melamine and formaldehyde by condensation of the two monomers. V0 cellulose filled urea-formaldehyde moulding powder: characteristic examples, Dietrich Braun, Hans-Josef Ritzert, in Comprehensive Polymer Science and Supplements, 1989. The FDA has increased powers of detention without inspection of imports of vegetable proteins from China. 1. Use descriptors are adapted from ECHA guidance to improve readability and may not correspond textually to descriptor codes described in Chapter R.12: Use Descriptor system of ECHA Guidance on information requirements and chemical safety assessment. The melamine released is also a blowing source, which blows up the char, resulting in an intumescent behavior. The melamines are also used as binders for the foundry sands and the abrasive powders for the abrasive grinding stones and papers. See examples of Melamine in English. 2, 4, 6-triamino-l, 3, 5-triazine, reacts with many different aldehydes and ketones. The EC Number is the numerical identifier for substances in the EC Inventory. In the gas-phase reaction, reactions are carried out at high temperatures and low pressures (400 °C, 0.7 MPa). Please note: Precautionary measures and guidance on safe use concern the use and handling of the specific substance as such, not of the presence of the substance in other articles or mixtures. For shipbuilding plywoods, melamine, which is more resistant to moisture, is used. Rude or colloquial translations are usually marked in red or orange. 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