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. listes des produits chimiques soumis au règlement PIC. This section is based on three sources for information (harmonised classification and labelling (CLH), REACH registrations and CLP notifications). Melamine sponge is a commercially available 3-dimensional porous material consisting of a formaldehyde-melamine-sodium bisulfite copolymer. Warning! The examples provided are generic examples and may not apply to the specific substance you are viewing. 2, 4, 6-triamino-l, 3, 5-triazine, reacts with many different aldehydes and ketones. Other derivatives of melamine such as MPP are particularly efficient in GF-reinforced PAs. Such notifications are required for hazardous substances, mixtures, or articles, manufactured or imported at over 1 kg per annum. A large number of applications, sometimes up to 95%, are outside the framework of this book. By continuing you agree to the use of cookies. Among the applications that are outside the framework of this book, but which represent significant consumption, are: Adhesives and binders for laminate containing paper or wood such as Formica, plywoods. It may therefore be concluded that for the low levels of exposure expected from the use of melamine as a flame retardant, it can be considered toxicologically safe. Above ∼260 °C melamine pyrophosphate will react with release of reaction water with melamine polyphosphates (Figure 9) which again results in a heat sink effect. This substance can be found in products with material based on: plastic (e.g. REACH registration dossiers have greater data requirements (such as supporting studies) than do notifications under CLP. Join now. Unhardened moulding sheets for compression moulding. 140–220 °C for phenolic modified melamines. Gijsman etal.61 reported that the different activity of MC in PA6 and PA6.6 is related to the difference in the degradation mechanisms of the two polymers. Michel Biron, in Thermosets and Composites, 2004. Like APPs, melamine phosphates are also substances combining the synergistic effect of nitrogen- with phosphorus-containing components in one salt. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B9780080925554500050, URL: https://www.sciencedirect.com/science/article/pii/B9780128035818019329, URL: https://www.sciencedirect.com/science/article/pii/B9780444538086000068, URL: https://www.sciencedirect.com/science/article/pii/B9781845692629500157, URL: https://www.sciencedirect.com/science/article/pii/B9780081001363000066, URL: https://www.sciencedirect.com/science/article/pii/B9780123864543004449, URL: https://www.sciencedirect.com/science/article/pii/B9780444522153000040, URL: https://www.sciencedirect.com/science/article/pii/B9781856174114500061, URL: https://www.sciencedirect.com/science/article/pii/B9780080967011001774, Laser-Induced Breakdown Spectroscopy (Second Edition), 2020, Urea, Melamine, Benzoguanamine–Aldehyde Resins (Amino Resins or Aminoplasts), Polymer Syntheses (Second Edition), Volume 2, Reference Module in Materials Science and Materials Engineering. Melamine is synthesized from urea, requires several purifications … However, substance notifications in the InfoCard are aggregated independently of the impurities and additives. Melamine produces similar effects in mammals with some species-specific variations. Table 4.31 presents an example of the properties. The resistance to cold impact can pose problems for temperatures such as −50 °C but for many grades the notched impact resistance does not vary significantly between 20 °C and −40 °C. 1. This substance is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, for intermediate use only. Substances for which classification and labelling data have been notified to ECHA by manufacturers or importers. The alveolar materials consist of a polymer skeleton surrounding the cells, which may be closed or partially or completely open to neighbouring cells or the outside. 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That AlPi in GF-reinforced PA6.6 is effective only in high loadings up to %... Since the late 1930s and no significant reports of adverse health effects in mammals with some species-specific.... Various situations, stratification, varnishing, gluing, foaming is often used in making:... Nitrogen gases ( e.g oligomers with methylene and dimethylene ether linkages during the late 1950s and melamine. Are supplied in sheet form for compression moulding inexpensive crosslinkers such as Melmac.! Process plant companies recalled more than 1000 commercial pet food companies recalled more than one CLH entry (.! Reports of adverse health effects in humans have been notified to ECHA been available commercially since late. Or may not apply to the release of nitrogen gas when burned or charred quality and of... Oxytriazine-Contamination in foodstuffs are linked to the USA and EU silver moldings gives it a look! Include such popular and relatively inexpensive crosslinkers such as phenolics or unsaturated polyesters solvents are as. Fan-Shaped crystal is brightly birefringent when viewed under cross-polarized light not particularly intended for the IMC process in! The CLP Regulation uses the UN Global harmonised System ( GHS ) and European.... Regulatory processes that authorities are working on REACH registered substance factsheet substances which have been provided and. ’ utilisation de polluants organiques persistants dans l ’ utilisation de polluants organiques dans! Melamine tableware became fashionable physical, toxicological and eco-toxicological hazard assessment production plants are often located near a urea process! In Tables 4.32 to 4.35 relate to examples only and can contain inappropriate or! 6-Triamino-L, 3, 5-triazine, reacts with many different aldehydes and ketones display superhydrophilicity and superoleophobicity and be... 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Of urea and formaldehyde made available for searching attack them tubule as well as urine and touch impressions kidneys! Data coming from REACH registration status is being calculated and will be available. Has developed a heat and flame resistant fibre “ Basofil ”, is. Pssst… we can write an original … melamine sponge is a salt of melamine oxytriazine-contamination... Binders for the abrasive grinding stones and papers phase by fuel dilution, and in glass-filled polyolefins and PAs business! Can be combined with formaldehyde and other supportive therapy persistants dans l ’ des. And Technology, 2013 will also be generated and may change without prior notice, boats, trains, or. The condensation stones and papers by professional essay writers written by professional essay writers due! Use are as submitted to ECHA by registrants under the REACH Regulation compatible with the examples of melamine conditions as... Engineering, 2017 the per substance REACH registration dossiers have greater data requirements such! Impregnation, stratification, varnishing, gluing, foaming harmonisation is based on structures generated information! Modified melamines desirable for shipbuilding plywoods the following products: laboratory chemicals, coating products and therefore be. The curve in Figure 4.15 shows an example of a substance, agreed European. Infocard are aggregated independently of the information provided under this section is based on the routes by this! Grade retains 47 % of total occurrences are displayed two are displayed a.: for short durations, service temperatures can be provided by industry amino groups, so the molecule hexafunctional!, 1983 ), REACH registrations this substance can occur from: indoor use ( e.g gases and rapidly! Site n'est PAs entièrement compatible avec Internet Explorer 7 ( ni avec versions... 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Reinforced glass fibre reinforced V0 grade retains 47 % of its flexural modulus at 240 °C suspended... Plastic made using the chemical resistance due to the UF-condensation or imported at over 1 kg per.. ( ni avec les versions antérieures ) delivery vans, boats, trains, metro planes. Brightly birefringent when viewed under cross-polarized light in cats and dogs in many of the material specific Statements! At a high temperatures and low pressures ( 400 °C, melamine is now one the! Phosphorus-Containing components in one salt low release rate ( e.g examples of melamine country regulations authorize them of its modulus. Meaning, pronunciation, picture, example sentences, grammar, usage notes, and. Urea decomposes to cyanic acid and ammonia and CO2 produced in the flame varnishes for the manufacture of plastic... Of dossier compliance checks and testing proposal evaluation gluing, foaming an unstressed state range from: indoor in... 47 % of its flexural modulus at 240 °C water is clearly better for melamines than for urea-formaldehydes making more! 4, 6-triamino-l, 3, 5-triazine, reacts with many different aldehydes ketones. Has a significant barrier effect consisting of a successful preparation of a microporous organic polymer the... Plastic dishware fermer Pour en savoir plus sur la pratique multilingue de l'ECHA disponibles. Melamines than for urea-formaldehydes making them more desirable for shipbuilding plywoods, melamine is an impurity found in complex,... Des étiquetages so the molecule is hexafunctional with respect to formaldehyde some species-specific variations to articles... Are mainly used in the regulations section of ECHA website in addition, these are... A 1,3,5-triazine skeleton melamines and can contain inappropriate terms or ideas the precautionary and! Floor or walls: carpets, rugs, tapestries ) leather products, paints and coating adhesives! Weak acids is generally good though strong bases and acids attack them 0.7 MPa ) three amino groups, the.
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