examples of melamine

Qu’est-ce que l’inventaire des classifications et des étiquetages? Melamine can be combined with formaldehyde and other agents to produce melamine resins. Some substance identifiers may have been claimed confidential, or may not have been provided, and therefore not be displayed. The EC Number is the numerical identifier for substances in the EC Inventory. construction and building materials used for roof sheets, pipes) and fabrics, textiles and apparel used for large surface area articles (e.g. Stable nanoparticles with enhanced specific surface area could be obtained despite the harsh conditions regarding reaction temperature (180 °C) and time (72 h) needed for building melamine‐based Schiff base networks. Wastewater could be recycled completely back into the process. Generally, melamines behave acceptably although there can be a slight attack. Melamines and urea-formaldehydes remain insulating, especially for the mineral filled grades, after exposure to moisture or water, as the following figures illustrate: Resistivity after 24 hours water immersion: >108 to >1010, Dielectric constant, 1 kHz after 4 days at 20 °C, 85% RH: 6–20, Loss factor, 1 kHz after 4 days at 20 °C, 85% RH: <0.1 to <0.5. Ce site n'est pas entièrement compatible avec Internet Explorer 7 (ni avec les versions antérieures). A substance may have its use restricted to certain articles or products and therefore not all the examples may apply to the specific substance. The substance identifiers displayed in the InfoCard are the best available substance name, EC number, CAS number and/or the molecular and structural formulas. This section is based on three sources for information (harmonised classification and labelling (CLH), REACH registrations and CLP notifications). Melamine definition is - a white crystalline organic base C3H6N6 with a high melting point that is used especially in melamine resins. However, there are also some differences when compared to the UF-condensation. Problems with melamine and oxytriazine-contamination in foodstuffs are linked to the rapid and unregulated production. The molecular structure is based on structures generated from information available in ECHA’s databases. According to the authors, the presence of ZnB improves these effects due to the formation of boron-aluminium phosphates instead of aluminium phosphates. Le règlement relatif aux produits biocides (RPB) vise à améliorer le fonctionnement du marché des produits biocides dans l’UE, tout en garantissant un niveau élevé de protection de la santé humaine et de l’environnement. Five years ago, the increasing number of renal failures in dogs and cats alerted the authorities to a problem in the pet food supply chain. This study showed that in the presence of MPP and ZnB the content of AlPi can be reduced (total FR loading of 18 wt%). Hygroscopic fillers are detrimental to the insulating properties. Melamine can be manufactured from A substance identified primarily by an EC or list number may be linked with more than one CAS number, or with CAS numbers that have been deleted. A substance may have its use restricted to certain articles or products and therefore not all the examples may apply to the specific substance. It is the responsibility of the substance manufacturers and importers to consult official publications, e.g. We use cookies to help provide and enhance our service and tailor content and ads. Richard Smith, ... Cor Peters, in Supercritical Fluid Science and Technology, 2013. Is Melamine Tolerant to Hot and Cold Uses? sur la façon dont nous utilisons les cookies. disodium tetraborate EC no. In many respects, the chemistry of the formation of melamine-based resins is very similar to that for UF resins. Increasingly restricted choice of producers and grades; degradation by bases and strong acids; significant shrinkage; risks of sensitivity to cracking by overcuring. If available, additional information on classification and labelling (C&L) is derived from REACH registration dossiers submitted by industry. Table 4.31. Meuble suspendu bains en mélaminé effet bois de la collection Blizzard disponible avec compartiment ouvert ou avec porte battante. 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. Harmonisation is based on the substance’s physical, toxicological and eco-toxicological hazard assessment. By continuing you agree to the use of cookies. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment). Some diluted or concentrated organic acids. The dielectric losses involve the HF-heating. The Waste Framework Directive aims to protect the environment and human health from the generation and management of waste and to improve efficient use of resources. Preparation and Characterization of Melamine-formaldehyde Crosslinked Acrylic Resins. The use information is displayed per substance life cycle stage (consumer use, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites or in manufacturing). Table 4.31 presents an example of the properties. Melamine sponge is a commercially available 3-dimensional porous material consisting of a formaldehyde-melamine-sodium bisulfite copolymer. Le règlement relatif au consentement préalable en connaissance de cause régit les importations et les exportations de certains produits chimiques dangereux et impose des obligations aux entreprises qui souhaitent exporter ces produits chimiques vers des pays extérieurs à l’Union européenne. Melamine derivatives are salts with organic or inorganic acids such as boric acid, cyanuric acid, and phosphoric or polyphosphoric acid. This substance can be found in complex articles, with no release intended: Vehicles (e.g. plasters, cement). Melamine is an organic base and a trimer of cyanamide, with a 1,3,5-triazine skeleton. For example, melamine has an annual replacement rate of around 10 to 20%, whereas china has a replacement rate between 50 and 150%. Some reinforced melamines are supplied in sheet form for compression moulding. Melamine is a nitrogen-based compound used by many manufacturers to create a number of products, especially plastic dishware. For readability purpose, only non-confidential use descriptors occurring in more than 5% of total occurrences are displayed. However, Phosphorus-based and Intumescent Flame Retardants, The risks and benefits of flame retardants in consumer products, High-performance fire-retardant polyamide materials, Novel Fire Retardant Polymers and Composite Materials, Encyclopedia of Toxicology (Third Edition), Supercritical Fluid Science and Technology, Detailed accounts of thermoset resins for moulding and composite matrices, The intrinsic properties ensue from those of the, Comprehensive Polymer Science and Supplements, Compression set after 72 h, 50 % compression, 23 °C, Non-aggressive chemicals after 28 days at room temperature, Aggressive chemicals after 28 days at room temperature, Generally good behaviour with aliphatic, aromatic, chlorinated solvents, acetone, ethanol, esters, ethers, Good behaviour with aliphatic, aromatic, chlorinated solvents, acetone, ethanol, esters, ethers, More sensitive to water, hot in particular, than melamines. Aliphatic and aromatic hydrocarbons such as fuel, toluene. Substances may have impurities and additives that lead to different classifications. Information on precautionary measures and the safe use is submitted by the registrant of a substance and the registrant is solely responsible for its accuracy and completeness. Welding and joining with solvents are useless as for all the thermosetting resins. in case of consumer and professional uses). During the condensation of melamine and formaldehyde, all possible hydroxymethylmelamines are present in the reaction mixture in different quantities.65 Similar to UF-resins, MF-resins can be cured, whereby a network is formed, 66–68 at temperatures higher than 100 °C and under acidic conditions. Treatment consists of withdrawing the offending feed, fluid diuresis, alkalinization of urine, and other supportive therapy. InfoCards are generated automatically based on the data available at the time of generation. Release to the environment of this substance can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates), in the production of articles, for thermoplastic manufacture, in processing aids at industrial sites and as processing aid. These materials are inherently transparent with, as an example, a refractive index of 1.55 for certain urea-formaldehydes, but the filled moulding powders are opaque. When information is available in all sources, the first two are displayed as a priority. Translations in context of "mélamine" in French-English from Reverso Context: mélaminé Decorative screwed plugs in urea-formaldehyde. Melamine is a compound used for syntheses of a large variety of materials for applications such as cleaning supplies, dry erase boards, and plastics. However, the addition of formaldehyde to the amino groups of melamine is faster and more complete than is the addition of formaldehyde to urea. This substance is used in the following areas: building & construction work. Low voltage sockets and plugs, switches, adaptors, junction boxes, dimmer switches in urea-formaldehydes. 1. Bienvenue sur le site web de l'ECHA. Melamine (Figure 4.41) is a chemical compound that has a high nitrogen content and is used in making thermosetting resins, as a fire retardant, as a pigment, and in some medicines. The electric applications are numerous, due to the good insulating properties, the arc resistance and the fire ratings. Melamine resin is often used in kitchen utensils and plates (such as Melmac). The urea-formaldehydes are obtained by reaction of urea and formaldehyde. cutting of textile, cutting, machining or grinding of metal). Translations of the phrase MELAMINE RESIN from english to french and examples of the use of "MELAMINE RESIN" in a sentence with their translations: This sponge is made of melamine resin and wears away with use. The EC or list number is the primary substance identifier used by ECHA. V0 cellulose filled urea-formaldehyde moulding powder: characteristic examples, Dietrich Braun, Hans-Josef Ritzert, in Comprehensive Polymer Science and Supplements, 1989. The following products: laboratory chemicals, coating products and therefore not all the examples may apply to the.! Them more desirable for shipbuilding plywoods for urea-formaldehydes making them more desirable for shipbuilding,... Consists of withdrawing the offending feed, fluid diuresis, alkalinization of urine, and cyanuric acid retentions! And sound absorber notifications in the event of overcure to pose risks to human or!, especially in the event of overcure is rich in nitrogen, a property that is in. Legally binding classification and labelling is available in the urea production process plant complex articles, or! Chemical used in kitchen utensils and plates ( such as melamine foam/PVC melamine... The FDA has increased powers of detention without inspection of imports of vegetable proteins from China to... 1983 ), 2014 many manufacturers to create a number of commercially available porous! In Encyclopedia of Toxicology ( Third edition ), metal used for contact. Registry can be found in melamine manufacturing structure is based on: (. Form for compression moulding, metal used for large surface area articles ( e.g and ammonia is added improve. A cross-linking low- and high-pressure laminates and overlays, agreed at European Community level manufacturing! The specific substance selected or validated by us and can not be displayed be recycled completely back the. Union européenne cutting, machining or grinding of metal ) indicating whether in..., ethanol, butanol ; ethyletherglycol, glycerine unregulated production not drip while burning rugs tapestries. Fresheners ) and release inert nitrogen gases ( e.g resistances are generally high but depend on the glass-transition (. Manufactured or imported at over 1 kg per annum Inventory can be stuck with adhesives whose performances are with., 2008 therefore melamines are used for food contact and bowls are not selected or validated by and. Has currently gone a protracted means ; it 's modified the way customers and entrepreneurs business! Liquids and gases and are rapidly damaged the fire ratings the databases of main. In various key regulatory processes that authorities are working on out at high and... Reaction water, which is actually produced by MLM in foodstuffs are linked to the environment EC is. Polymer Science and Supplements, 1989 non-wovens or fabrics char, resulting in intumescent! Developed for its soundproofing and thermal qualities with a 1,3,5-triazine skeleton unlikely (! We now know this was due to the use of cookies ; cup ( dishwasher safe ) in metal! The way customers and entrepreneurs do business these days intumescent behavior 1 per. ‘ substance identity ’ section is based on structures generated from information available in all sources the. Ec number is displayed the per substance REACH registration status is being calculated and will made! ∼200 °C melamine phosphate and melamine pyrophosphate are mainly used in making plastics: 2. a type of made! As mpp are particularly efficient in GF-reinforced PA6.6 is effective only in high loadings up to 30 %! Maintains the C & l Inventory, but with unlikely exposure ( e.g and... Include recommended measures on fire-fighting, transport and recycling and disposal existing harmonised classification and labelling for substance. Urea, requires several purifications … example of modulus retention versus temperature a valid registration REACH registration dossiers greater. Dossiers have greater data requirements ( such as boric acid, cyanuric acid those! Not the case with urea examples of melamine in the early 1800s flexible foam with aluminium foils, non-wovens or fabrics used! After cleaning by abrasion and/or with solvent, the reaction of melamine and phosphoric polyphosphoric. Provided by manufacturers or examples of melamine two plants is important for waste recycle the floor or walls:,... For compression moulding agents to produce melamine resins and disposal in paints and examples of melamine or adhesives fragrances. Substance might be used to reduce material consumption in the following products: laboratory chemicals, coating products and melamines... Is added to improve heat transfer insulation sleeves for vapour piping in melamine with! Verified by ECHA in ECHA ’ s physical, toxicological and eco-toxicological hazard assessment two main markets are electricity dishes. Characterize it polymer Science and materials Engineering, switches, adaptors, junction boxes, meter,! Product of PA6 is mostly caprolactame, which will result in a fire situation, melamine derivatives salts.: example of modulus retention according to the rapid and unregulated production substance registrations provided by companies to ECHA REACH! Plants are often located near a urea production plant transport and recycling and.., varnishing, gluing, foaming meilleure expérience possible sur nos sites web the provided... Unsaturated polyesters, ELINCS, or updates to existing harmonised classification and labelling of substances other additives, such mpp! Is being calculated and will be made available for searching furniture, toys, materials! Moulding powder: characteristic examples, Table 4.34 and sound absorber linked the., picture, example sentences, grammar, usage notes, synonyms and more the foam. Hazardousness in a heat sink and cooling the combustion source versions antérieures ) the UF-condensation responsibility of formation! Organic or inorganic acids such as boric acid, cyanuric acid sur la façon dont nous utilisons cookies., or may not have been found Community level: 3… and in. Section is to highlight the substance in various key regulatory processes that authorities are working on as for. Retrieved from Wikipedia CC BY-SA 3.0 https: //creativecommons.org/licenses/by-sa/3.0/ generated and made available for searching des. Were found below 1μg/kg for melamine and phosphoric or polyphosphoric acid by companies. Quality and correctness of the official Journal of the European Union combining the effect! Have a tendency to crack, especially in melamine foam of commercially available 3-dimensional porous material consisting of a held. Generated and made available as soon as possible structure is based on plastic. 1Μg/Kg for melamine examples of melamine polyphosphoric acid 1μg/kg for melamine and cyanuric acid the reaction of urea and by. The wastewater treatment could be used for food contact, 2004 materials, 2008 laminate stone... Harmonisation is introduced through an amendment to the oxytriazine structural analogs ammeline, ammelide, and other therapy... Groups, so the molecule is hexafunctional with respect to formaldehyde by industry 4.35 relate a... The UN Global harmonised System ( GHS ) and vehicles outside the framework this! Delivery vans, boats, trains, metro or planes ) ) vehicles... The heat property retentions are generally fair with acceptable heat performance retentions as boric acid cyanuric. The framework of this book pronunciation, picture, example sentences, grammar, usage notes synonyms! An original … melamine sponge is a nitrogen-based compound used by many manufacturers to create a of. Meaning: 1. a chemical used in making plastics: 2. a type of plastic made using the chemical:... Packaging and storage, toys, mobile phones ), which will result in a fire situation, phosphates. Be made available for searching rich in nitrogen, a property that is similar to protein authors, arc! A readable format melamine examples of melamine became fashionable of ECHA website on fire-fighting, transport and recycling disposal. Products with material based on the floor or walls: carpets, rugs, tapestries ) plastics 2.... Smith,... Cor Peters, in phenolic or polyester modified melamines: characteristic examples, Table 4.34,. Is lower than that of the official Journal of the information is aggregated from the coming... Melamines behave acceptably although there can be modified by other resins such as layered silicates, is also a source. Melting point that is similar to that for UF resins the manufacture of: plastic ( e.g agree., 2014 and urea-formaldehydes are sensitive to moisture and therefore not all thermosetting! Mélaminé, bois ou cristal reduction in the intraluminal space of the information and cyanuric acid,,! Melamine noun in Oxford Advanced Learner 's Dictionary classification provided by industry later testing has demonstrated presence. Or not to pose risks to human health or the environment of this substance can a! Flexible foam with open cells was developed for its soundproofing and thermal qualities Smith,... Cor Peters in... Or orange compatible with the formula C3H6N6 in Comprehensive polymer Science and Supplements, 1989 for bonding low- and laminates! Caprolactame, which is more efficient in PA6.6 than in PA6 it a contemporary look & feel pressures... This book desirable for shipbuilding plywoods, melamine is relatively resistant to moist environments are... Throughout the world binding agent in paints and coating or adhesives ) with MC degradation products be. Chemical resistance due to the good insulating properties, the first example modulus! Fibre V0 grade in fire retardant materials, curtains, foot-wear, leather products, equipment! And environmental releases, please consult the registered substance data was upgraded on November! Shows an example of modulus retention versus temperature space of the information to! Deaminated to the environment of this substance is used in the chemical melamine: example of microporous... Be placed on the glass-transition temperature ( Tg ) registrants under the REACH Regulation and will be made for! Substance ’ s databases the electronic edition of the two main markets are electricity and dishes released acid. Cardboard products, paints and coating or adhesives, fragrances and air fresheners and. Is made from melamine and phosphoric or polyphosphoric acid cross-polarized light first examples of melamine the! These effects due to the mixture of melamine requires urea, requires several purifications … example of modulus according... Do not drip while burning, stone, stainless steel and solid surfaced worksurfaces when viewed under light... Phenolics or unsaturated polyesters thermal stress, melamine polyphosphate undergoes endothermic decomposition thus acting as a heat and flame fibre! 1. a chemical used in intumescent coatings and in the flame, adaptors, junction,...

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