Registration Dossier
Registration Dossier
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EC number: 266-046-0 | CAS number: 65997-17-3 This category encompasses the various chemical substances manufactured in the production of inorganic glasses. For purposes of this category, 'glass' is defined as an amorfous, inorganic, transparent, translucent or opaque material traditionally formed by fusion of sources of silica with a flux, such as an alkali-metal carbonate, boron oxide, etc. and a stabilizer, into a mass which is cooled to a rigid condition without crystallization in the case of transparent or liquid-phase separated glass or with controlled crystallization in the case of glass-ceramics. The category consists of the various chemical substances, other than by-products or impurities, which are formed during the production of various glasses and concurrently incorporated into a glass mixture. All glasses contain one or more of these substances, but few, if any, contain all of them. The elements listed below are principally present as components of oxide systems but some may also be present as halides or chalcogenides, in multiple oxidation states, or in more complex compounds. Trace amounts of other oxides or chemical compounds may be present. Oxides of the first seven elements listed* comprise more than 95 percent, by weight, of the glass produced. @Aluminium*@Lead@Boron*@Lithium@Calcium*@Manganese@Magnesium*@Molybdenum@Potassium*@Neodymium@Silicon*@Nickel@Sodium*@Niobium@Antimony@Nitrogen@Arsenic@Phosphorus@Barium@Praseodymium@Bismuth@Rubidium@Cadmium@Selenium@Carbon@Silver@Cerium@Strontium@Cesium@Sulfur@Chromium@Tellurium@Cobalt@Tin@Copper@Titanium@Germanium@Tungsten@Gold@Uranium@Holmium@Vanadium@Iron@Zinc@Lanthanum@Zirconium
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Administrative data
Description of key information
Additional information
Man-made vitreous fibres (MMVF) fulfilling the note Q conditions and E-glass microfibre have similar physical and chemical properties (most importantly both are highly insoluble and chemically inert inorganic solid fibres). It is thus evaluated that results from a guideline GLP study, which was carried out using MMVF note Q fibres as the test substance is also applicable to E-glass microfibre. The evaluation below was made using the results of MMVF note Q fibres study.
It is evaluated that E-glass microfibre has no short-term toxicity to fish. No mortality or behavioural effects were observed during the guideline test. The LC10 and LC50 values are thus indicated as > 1.60 mg/L (>1000 mg/L nominal concentration) for MMVF note Q fibres, and the same values are also accepted for E-glass microfibre.
It is evaluated based on the study documented in the end-point 6.1.3 that E-glass microfibre has no acute toxicity to Daphnia magna at the highest tested dose level (1000 mg/L nominal concentration). Thus NOEL >= 1000 mg/L. Similarly, it is evaluated based on the
short term toxicity test to aquatic invertebrates that E-glass microfibre has no negative effects to invertebrates.
It is shown that the MMVF note Q fibres did not induce acute toxicity to algae (Pseudokirchneriella subcapitata) at the highest tested dose level (1000 mg/L nominal concentration). Thus NOEL >= 1000 mg/L, the same value is also accepted for E-glass microfibre.
The study of the end-point 6.1.7 (toxicity to microorganisms) is waived based on an adaptation according to column 2 of Annex VIII, 9.1.4, because E-glass microfibre is highly insoluble in water.
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