Technology, Office of Data A substance may have its use restricted to certain articles or products and therefore not all the examples may apply to the specific substance. Cubic crystal structure. The thyroid gland is the part of the body that is most sensitive to radioactive iodine. If available, additional information on classification and labelling (C&L) is derived from REACH registration dossiers submitted by industry. This is unique source of information on the chemicals manufactured and imported in Europe. From a list of almost 2000 names and formulas, students will be given the opportunity to practice their ability to name ionic compounds, given the formula, and determine the formula given the name. ! The EC or list number is the primary substance identifier used by ECHA. Devise a simple test to confirm the presence orabsence of lead in that hair tonic. Cutting Box Joints On Router Table. 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). Caesium iodide photocathodes are highly efficient at extreme ultraviolet wavelengths. also available. If a substance is classified under multiple CLH entries, a link to the C&L Inventory is provided to allow users to view CLH information associated with the substance and no text is automatically generated for the InfoCard. CESIUM IODIDE. The EC Number is the numerical identifier for substances in the EC Inventory. Favorite Answer. Molecular Formula. The calcium iodide is CaI2. 7789-17-5. This activity includes every compound formula and name that can be formed from the list 44 Ions provided in Chemistry A at Pickerington High School Central. This problem has been solved! What is the empirical formula of the oxide? Standard Reference Data Act. I know that the empirical formula is ZnI2, but when we did the experiment, we got 0.12g of Zn and 0.25g of I2. The CLP Regulation uses the UN Global Harmonised System (GHS) and European Union Specific Hazard Statements (EUH). It covers their hazardous properties, classification and labelling, and information on how to use them safely. For readability purpose, only non-confidential use descriptors occurring in more than 5% of total occurrences are displayed. The per substance REACH registration status is being calculated and will be made available as soon as possible. Release to the environment of this substance can occur from industrial use: manufacturing of the substance. Find here details of companies selling Cesium Iodide, for your purchase requirements. Note that for readability purposes, only the pictograms, signal words and hazard statements referred in more than 5% of the notifications under CLP are displayed. Chemistry Worksheet Lewis Dot Structures Name: Block: 2. Quantity Value Units Method Reference Comment; Δ r H°: 141.00 ± 0.21: kJ/mol: N/A: Wang, Wang, et al., 2010: gas phase: Δ r H°: 151. This problem has been solved! Registration, Evaluation, Authorisation and Restriction of Chemicals, Chemical Agents Directive and Carcinogens or Mutagens Directive, EC Inventory, C&L Inventory, Registration dossier, Pre-Registration process, Other, Substances of very high concern identification, Recommendation for the Authorisation List, Getting started with EU chemicals legislation, Classification of substances and mixtures, Harmonised classification and labelling (CLH). This information is only displayed if the substance is well–defined, its identity is not claimed confidential and there is sufficient information available in ECHA’s databases for ECHA’s algorithms to generate a molecular structure. by the U.S. Secretary of Commerce on behalf of the U.S.A. ; Gorokhov, L.N. The source of the information is mentioned in the introductory sentence of the hazard statements. Such notifications are required for hazardous substances, mixtures, or articles, manufactured or imported at over 1 kg per annum. Applications CESIUM IODIDE Caesium iodide 7789-17-5 100 *Designates that a specific chemical identity and/or percentage of composition has been withheld as a trade secret. Determining the Empirical Formula of Magnesium Oxide, students set out to find if there is a true 1:1 ratio in the empirical formula of MgO. Cesium iodide 99.999% trace metals basis CAS Number 7789-17-5. potassium iodi_d_e), the answer is KI. Purification of the raw cesium iodide using an inorganic absorbent was found to be the most favorable. The elimination of iodide in breast milk is well documented. Molar mass of CsI = 259.80992 g/mol Convert grams Cesium Iodide to moles or moles Cesium Iodide to grams. The attraction between the - anion and the + cation is called an ionic bond. ; Wei, F.; Li, J.; Wang, L.S., Find chemicals information cesium,iodide at guidechem, professional and easy to use. 2Cs(s) + I2(g) → CsI(s) 2Cs(s) + I2(g) → CsI(s) Notice in the equation that iodine is in it's gaseous state in order for the reaction to proceed. Cesium Iodide is highly soluble in water and must be protected from moisture. 1 1. Hazard statements were adapted to improve readability and may not correspond textually to the hazard statements codes description in the European Union Specific Hazard Statements (EUH) or the. 2.) CsI. Empirical Formula (Hill Notation) CsI . The Support section provides tools and practical guidance to companies which have responsibilities under the EU chemicals legislation. 131 - 140 of 500 . But you were 100% correct, the reaction between cesium and iodine is simply, cesium iodide. The substance identifiers displayed in the InfoCard are the best available substance name, EC number, CAS number and/or the molecular and structural formulas. Guidance on safe use - recommendations by substance registrant on the proper use of the substance in various situations. Previous question Next question Transcribed Image Text from this Question. DTXSID2064945. I had to find the empirical formula for Zinc Iodide for a chem lab.? If the substance was not covered by the EC Inventory, ECHA attributes a list number in the same format, starting with the numbers 6, 7, 8 or 9. Cesium iodide. Cs = Cessium N = Nitrogen It's molar mass is 412.7231. The purpose of the information provided under this section is to highlight the substance hazardousness in a readable format. 0 0. reaction search pages in place of the enumerated reaction 260 pm. Release to the environment of this substance can occur from industrial use: of substances in closed systems with minimal release. 1 decade ago. reaction search for this species. Taken together, considering the physico-chemical properties and the available literature cesium iodide … The EC Inventory is a combination of three independent European lists of substances from the previous EU chemicals regulatory frameworks (EINECS, ELINCS and the NLP-list). The precautionary measures and guidance on safe use are as submitted to ECHA by registrants under the REACH Regulation. Home. KI (potassium iodide) is a salt of stable (not radioactive) iodine that can help block radioactive iodine from being absorbed by the thyroid gland, thus protecting this gland from radiation injury. Synonyms. ; Xing, X.P. Chem. Answer Save. However, substance notifications in the InfoCard are aggregated independently of the impurities and additives. [Relative atomic mass: O, 16; Al, 27] Solution: Since 2 moles of aluminium atoms combine with 3 moles of oxygen atoms, the empirical formula of the oxide is Al 2 O 3. Very Good! EREX94. potassium iodine empirical formula? Cesium Iodide SAFETY DATA SHEET 1 PRODUCT AND SUPPLIER IDENTIFICATION. It is possible that a harmonisation is introduced through an amendment to the CLP Regulation. First-aid measures Remove victim to fresh air and keep at rest in a position comfortable for breathing. Diatomic constants for 133 Cs 127 I; State T e ω e ω e x e ω e y e B e α e γ e D e β e r e Trans. : 232-145-2 Molecular formula: CsI Molecular weight: 259.8099 Melting point: 626 ℃ Boiling point: 127 According to the classification provided by companies to ECHA in REACH registrations this substance is very toxic to aquatic life and is suspected of damaging fertility or the unborn child. cesium iodide Physical appearance: colorless cubic crystals Empirical formula (Hill's system for organic substances): CsI Structural formula as text: CsI Molar/atomic mass: 259.81 Melting point (°C): 621 Boiling point (°C): 1280 Solubility (g/100 g of solvent): liquid ammonia: 151.7 (0°C) acetone: 0.159 (18°C) acetone: 0.139 (37°C) Caesium iodide photocathodes are highly efficient at extreme ultraviolet wavelengths. :7789-17-5 nature : density 4.51. This information is only displayed if the substance is well-defined, its identity is not claimed confidential and there is sufficient information available in ECHA’s databases for ECHA’s algorithms to generate a molecular structure. The most important use of Caesium iodide. G/cm. Animal studies indicated that stable cesium and its salts have relatively low toxicity, with acute oral LD 50 values for rats and mice in the range 800–2000 mg kg −1, with the exception of cesium hydroxide, which is more toxic than cesium iodide or cesium chloride and has an intraperitoneal LD 50 of 89 mg kg −1. 5 Product Results | Match Criteria: Keyword Empirical Formula (Hill Notation): CsI. Soluble 74 g/100 mL (20 ° C). : 7789-17-5 EINECS no. ; Wang, X.B. "Empirical Formula Tin Iodide" Essays and Research Papers . Relevance. Substances listed in the EINECS, ELINCS, or NLP inventories. This page allows searching The quality and correctness of the information submitted to ECHA remains the responsibility of the data submitter. ECHA has no public registered data indicating whether or in which chemical products the substance might be used. This site is not fully supported in Internet Explorer 7 (and earlier versions). Soluble in water and organic solvents, may generate three and cesium iodide … However, NIST makes no warranties to that effect, and NIST ; Pyatenko, A.T.; Sidorova, I.V., of all reactions involving this species. InfoCards are generated automatically based on the data available at the time of generation. REACH regulation aims to improve the protection of human health and the environment from the risks that can be posed by chemicals. Cesium reacts with the halogens to form a fluoride, chloride, bromide, and iodide. Dip the strip in acetone, shake it dry and weigh again ( 0.001g). This section provides links to the list of precautions (precautionary statements) and to the guidance on safe use, if they have been provided in REACH registration dossiers. Harmonised classification and labelling is a legally binding classification and labelling for a substance, agreed at European Community level. One way to make caesium iodide is to react the hydroxide with hydroiodic acid. KI potassium iodide. Negative ions in the vapors of inorganic compounds, Cesium Iodide, actived by Sodium (Sodiumdoped Cesium Iodide, or CsI:Na) is a scintillation crystal material with high absorption power used in gamma ray absorption. CH 2 O is the molecular formula because the subscripts give the actual number of atoms of each element in the molecule. See the answer. Caesium iodide or cesium iodide (chemical formula CsI) is the ionic compound of caesium and iodine. The mass of iodide in the lead iodide compound can be calculated by deducting the initial mass of lead from the mass of the precipitate. the products in which the substance may be used) may refer to uses as intermediate and under controlled conditions, for which there is no consumer exposure. 805807 ; Sigma-Aldrich pricing. It is often used as the input phosphor of an X-ray image intensifier tube found in fluoroscopy equipment. The examples provided are generic examples and may not apply to the specific substance you are viewing. Laboratory Chemical Safety Summary (LCSS) Datasheet. More information about CAS and the CAS registry can be found here. Mass of unreacted Zinc is 1.775 Mass of reacted Zinc is 0.295 Initial mass of I2 is 1.176 Final mass of I2 is undetermined and was not asked for. eCl@ss 38100503 . Empirical Formula of Lead Iodide. (a.) The mean means the average value of this set of data. Expert Answer . Show transcribed image text. This substance has not been registered under the REACH Regulation, therefore as yet ECHA has not received any data about this substance from registration dossiers. 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. The CLP Regulation makes sure that the hazards presented by chemicals are clearly communicated to workers and consumers in the European Union. Caesium iodide (chemical formula CsI) is the ionic compound of caesium and iodine. Predict the empirical formula for each of the following compounds given the formula of sodium chloride, NaCl. The most important use of Caesium iodide. It does not represent a new labelling, classification or hazard statement, neither reflect other factors that affect the susceptibility of the effects described, such as duration of exposure or substance concentration (e.g. 7789-17-5: Density: 4.51 g/mL Solubility: 74 g/100 mL (20 ºC) Melting Point: 626 °C: Formula: CsI Boiling Point: 127 °C at … Still have questions? 10/15/2016 ALEKS; 2/2 iodine normally forms anions. Substances for which classification and labelling data have been notified to ECHA by manufacturers or importers. This substance is used for the manufacture of: electrical, electronic and optical equipment. It is often used as the input phosphor of an X-ray image intensifier tube found in fluoroscopy equipment. Industrial chemicals for sale, Quality Cesium Iodide with 99.9% Purity and CsI Formula on sale of Jiangxi Royal Import & Export Co. Ltd from China. name empirical formula iron(11) iodide 0 cesium … But you were 100% correct, the reaction between cesium and iodine is simply, cesium iodide. More information about Classification and Labelling is available in the Regulations section of ECHA website. KI. Name Empirical Formula Iron(11) Iodide 0 Cesium Fluoride. CAS : 7789-17-5 formula : CsI molecular weight : 259.81 Chinese name : CsI English title : Cesium iodide; Cesium iodide; Cesium monoiodide; dicesium diiodide; tricesium triiodide; Cesium iodide; caesiumiodide Notice:Each item can have many explanations from different angels. The ‘Hazard classification and labelling’ section shows the hazards of a substance based on the standardised system of statements and pictograms established under the CLP (Classification Labelling and Packaging) Regulation. ››Cesium Iodide molecular weight. Some substance identifiers may have been claimed confidential, or may not have been provided, and therefore not be displayed. 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