Introduction :Antimony is used as a catalyst in the production of polyester. Synthetic fibers are the most popular fibers in the world with 65% of world production of fibers being synthetic and 35% natural fibers. 1 Fully 70% of that synthetic fiber production is polyester. There are many different types of polyester, but the type most often produced for use in textiles is polyethylene terephthalate[email protected]
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Abstract. Sudden infant death syndrome (SIDS) has been associated with the volatilization of arsenic, antimony or phosphorus compounds from infants' bedding material by micro-organisms, the so
Feb 08, 2016 Antimony has become an increasingly critical element in recent years, due to a surge in industrial demand and the Chinese domination of primary production. Antimony is produced from stibnite ore (Sb2O3) which is processed into antimony metal and antimony oxide (Sb2O3). The industrial importance of antimony is mainly derived from its use as flame retardant in plastics, coatings, and
Antimony Recovery from End-of-Life Products and Industrial
Apr 24, 2019 Antimony is an environmental pollutant categorized as metalloids. The biosorption of Sb(III) ions from aqueous solutions investigated by Sargassum glaucescens brown alga seaweed in a fixed bed column. Column experiments were carried out to evaluate the effect of bed height and flow rate on the biosorption process and to obtain the experimental breakthrough curves. The highest
Sep 21, 2015 Heavy metal contents in the examined various textile fibers (cotton, acrylic, polyester, nylon, viscose, and polypropylene) after extraction in the artificial sweat solution were presented in Table 4.The concentrations of lead were found higher than the Oeko-Tex standards in cotton (1.57 mg kg −1), acrylic (1.68 mg kg −1), polyester (1.08 mg kg −1), and polypropylene (1.37 mg kg −1
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d Antimony-specific extraction via artificial saliva; 0.7% (Danish EPA 2003) e Oral exposure to antimony is based on a scenario assuming that the child is mouthing a textile object ( e.g., blanket, garment . or a textile toy) that may release antimony.
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Fractional release rates of antimony via artificial saliva and sweat of 0.7% and 10% per day were used. These results are supported by data from other studies. In a German study, a migration rate of 8.5% over 30 minutes via synthetic sweat was measured (BfR 2012) and in a study by Jenkins et al. (1998), a fractional release rate of 0.027% was
Mar 29, 2017 4. Antimony. Antimony is a poisonous chemical similar to arsenic, however the difference is that antimony is a metal whereas arsenic is more of a powder. Because it doesn’t carry heat well, antimony compounds are used to make flame-proofing materials, paints,
Other flame-retardant chemicals include boric acid, a toxic respiratory irritant; antimony, a metal potentially more toxic than mercury; and formaldehyde, a well-known hazardous toxin. Similar to human beds, if a pet bed is not marketed as organic and free of toxic flame retardants, you can assume that it has been treated with these chemicals.
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Jul 30, 2019 Antimony trioxide is commonly used as a catalyst in the production process. Antimony trioxide is classified as possibly carcinogenic, and some forms are potentially endocrine disrupting. Researchers have found antimony at detectable levels in polyester textiles. Even at low temperatures, antimony can migrate from polyester to saliva and sweat.
1. Introduction Antimony (Sb) is a redox-sensitive and chalcophile element that dominantly occurs in nature as Sb(iii) and Sb(v). 1 The element is commercially important for the production of glass, ceramics, metals, and rubber products and for the synthesis of flame retardant materials.Because of its assumed high toxicity, 2,3 antimony and its compounds have been declared by the European
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Feb 01, 2001 Antimony trichloride is known to be highly volatile and hence its addition caused a significantly higher transfer of antimony out of the fuel bed. The spiking with antimony trioxide increased the volatility, too, but it is surprising that out of the huge amount added to the fuel an only moderate fraction was volatilized.
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Apr 01, 2020 Antimony (as Sb), not more than 2 parts per million. Mercury (as Hg), not more than 1 part per million. Loss on ignition at 800 deg.C. (after drying for 3 hours at 105 deg.C.), not more than 0.5 percent. Water soluble substances, not more than 0.3 percent. Acid
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Jan 20, 2021 Yet another state has decided to ban certain flame retardants in selected consumer products. Massachusetts has decided to ban more than 10 brominated, chlorinated, or organophosphate-based compounds that provide flame retardancy to children’s products, bedding, carpeting, residential upholstered furniture, and window treatments.
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