Naming Ions and Chemical Compounds Worksheet #1 Write The
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Ag2s Solubility in Sulfide Solutions up to 250°C in Order to Estimate Possible Silver Sulfide Complexes in Ore Solutions, the S
Geochemical Journal, Vol. 21, pp. 291 to 305, 1987 Ag2S solubility in sulfide solutions up to 250°C ASAHIKO SUGAKI', STEVEN D. SCOTT', KENICHIRO HAYASHI', and ARASHI KITAKAZE1 Institute of Mineralogy, Petrology and Economic Geology, Faculty of Science, Tohoku University, Sendai 980, Japan' and Department of Geology, University of Toronto, Toronto M5S 1A1, Canada' (Received December 2, 1987: Accepted February 22, 1988) In order to estimatepossible silver sulfide complexes in ore solutions, the solubilityof Ag2Swas measuredbetween 25° and 250°Cin NaOH-H2S-H20solutions of 0.0 to 4.1m NaHSconcentration. Solu bilitychanges as a functionof temperature,total reducedsulfur concentration ES (mHS + mHS-)and pH. A maximumsolubility of 2140ppmAg was obtained at 250°Cin 4.1m NaHSconcentration under PH 2Sof 29.1 atm. From these solubility data, reactions to form silver sulfide complexes are estimated as follows: Ag2S + H2S = Ag2S(H2S), Ag2S + H2S + HS = Ag2S(H2S) (HS)-, Ag2S + H2S + 2HS = Ag2S (H2S) (HS)22 and Ag2S + 2HS = Ag2S (HS)22-. The equilibrium constants for these reactions are given in Table 2. Assuming that such silver sulfide complexes as above are in an ore solution , Ag2S (argentite or acanthite) is precipitated in response to changes of temperature, pH and total sulfur concentration (ES). Decrease of pH and ES is more effective than that of temperature. Silver sulfide complexes are more important than silver chloride complexes in ore solution of high ES, neutral to slightly alkaline pH and geologically reasonable chloride concentrations. INTRODUCTION to the experimental study by Seward (1973), Thermochemical data for aqueous metal bisulfide complexes are significant for the trans species at elevated temperatures and pressures port of gold in ore solutions under epithermal are indispensable for understanding transport of conditions, even if chloride complexes have the metals in hydrothermal solution. -
5. POTENTIAL for HUMAN EXPOSURE 5.1 OVERVIEW White
WHITE PHOSPHORUS 157 5. POTENTIAL FOR HUMAN EXPOSURE 5.1 OVERVIEW White phosphorus can enter the environment from its production, use, accidental spills during loading and unloading for shipment, and accidental spills during transport. Hazardous wastes sites containing white phosphorus can also be a source of phosphorus in the environment. White phosphorus has been found in at least 77 of the 1,430 current or former EPA National Priorities List (NPL) hazardous waste sites (HazDat 1996). However, the number of sites evaluated for white phosphorus is not known. The frequency of these sites within the United States can be seen in Figure 5-l. The persistence of elemental phosphorus in the air is very short due to oxidation to phosphorus oxides and ultimately to phosphorus acids. However, the particulate phosphorus aerosol may be coated with a protective oxide layer that may prevent further oxidation and extend the lifetime of particulate phosphorus in air. Both wet and dry deposition remove unreacted elemental phosphorus and the degradation products from the air. Similarly, elemental phosphorus oxidizes and hydrolyzes in water and in soil. A small amount of elemental phosphorus is lost from soil and water by volatilization. Phosphorus is used as a fumigant in the storage of grain. Because of ease of application, pellets of aluminum or magnesium phosphide are commonly used (Garry et al. 1993). Phosphine, a highly toxic gas, is generated from phosphide. The rate of formation of phosphine (permissible exposure limit [PEL], 0.4 mg/m3) is dependent on the ambient temperature and humidity. Its release is rapid, and it is extremely fatal to the unprotected person (Garry et al. -
An Investigation of the Crystal Growth of Heavy Sulfides in Supercritical
AN ABSTRACT OF THE THESIS OF LEROY CRAWFORD LEWIS for the Ph. D. (Name) (Degree) in CHEMISTRY presented on (Major) (Date) Title: AN INVESTIGATION OF THE CRYSTAL GROWTH OF HEAVY SULFIDES IN SUPERCRITICAL HYDROGEN SULFIDE Abstract approved Redacted for privacy Dr. WilliarriIJ. Fredericks Solubility studies on the heavy metal sulfides in liquid hydrogen sulfide at room temperature were carried out using the isopiestic method. The results were compared with earlier work and with a theoretical result based on Raoult's Law. A relative order for the solubilities of sulfur and the sulfides of tin, lead, mercury, iron, zinc, antimony, arsenic, silver, and cadmium was determined and found to agree with the theoretical result. Hydrogen sulfide is a strong enough oxidizing agent to oxidize stannous sulfide to stannic sulfide in neutral or basic solution (with triethylamine added). In basic solution antimony trisulfide is oxi- dized to antimony pentasulfide. In basic solution cadmium sulfide apparently forms a bisulfide complex in which three moles of bisul- fide ion are bonded to one mole of cadmium sulfide. Measurements were made extending the range over which the volumetric properties of hydrogen sulfide have been investigated to 220 °C and 2000 atm. A virial expression in density was used to represent the data. Good agreement, over the entire range investi- gated, between the virial expressions, earlier work, and the theorem of corresponding states was found. Electrical measurements were made on supercritical hydro- gen sulfide over the density range of 10 -24 moles per liter and at temperatures from the critical temperature to 220 °C. Dielectric constant measurements were represented by a dielectric virial ex- pression. -
Sodium Hydroxide, Solution (Material Safety Data Sheet)
3/7/2018 Report | CAMEO Chemicals | NOAA Print Chemical Datasheet SODIUM HYDROXIDE SOLUTION Chemical Identifiers CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code 1310-73-2 1824 Corrosive CSS NFPA 704 Diamond Hazard Value Description 0 Health 3 Can cause serious or permanent injury. 3 1 Flammability 0 Will not burn under typical fire conditions. Normally stable but can become unstable at elevated temperatures and Instability 1 pressures. Special (NFPA, 2010) NIOSH Pocket Guide International Chem Safety Card Sodium hydroxide SODIUM HYDROXIDE General Description A colorless liquid. More dense than water. Contact may severely irritate skin, eyes, and mucous membranes. Toxic by ingestion. Corrosive to metals and tissue. Hazards Reactivity Alerts none Air & Water Reactions Slowly absorbs carbon dioxide from the air to give solid products as crusts or precipitates. Water soluble. Dilution with water liberates heat, possibly enough to cause local boiling and spattering. Fire Hazard Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: https://cameochemicals.noaa.gov/report?key=CH1499 1/5 3/7/2018 Report | CAMEO Chemicals | NOAA Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. For electric vehicles or equipment, ERG Guide 147 (lithium ion batteries) or ERG Guide 138 (sodium batteries) should also be consulted. (ERG, 2016) Health Hazard Causes severe burns of eyes, skin, and mucous membranes. (USCG, 1999) Reactivity Profile SODIUM HYDROXIDE SOLUTION refers to an aqueous solution of sodium hydroxide. -
Alphabetical Index of Substances and Articles
ALPHABETICAL INDEX OF SUBSTANCES AND ARTICLES - 355 - NOTES TO THE INDEX 1. This index is an alphabetical list of the substances and articles which are listed in numerical order in the Dangerous Goods List in Chapter 3.2. 2. For the purpose of determining the alphabetical order the following information has been ignored even when it forms part of the proper shipping name: numbers; Greek letters; the abbreviations “sec” and “tert”; and the letters “N” (nitrogen), “n” (normal), “o” (ortho) “m” (meta), “p” (para) and “N.O.S.” (not otherwise specified). 3. The name of a substance or article in block capital letters indicates a proper shipping name. 4. The name of a substance or article in block capital letters followed by the word “see” indicates an alternative proper shipping name or part of a proper shipping name (except for PCBs). 5. An entry in lower case letters followed by the word “see” indicates that the entry is not a proper shipping name; it is a synonym. 6. Where an entry is partly in block capital letters and partly in lower case letters, the latter part is considered not to be part of the proper shipping name. 7. A proper shipping name may be used in the singular or plural, as appropriate, for the purposes of documentation and package marking. - 356 - INDEX Name and description Class UN No. Name and description Class UN No. Accumulators, electric, see 4.3 3292 Acid mixture, nitrating acid, see 8 1796 8 2794 8 2795 Acid mixture, spent, nitrating acid, see 8 1826 8 2800 8 3028 Acraldehyde, inhibited, see 6.1 1092 ACETAL 3 1088 -
Chemical Chemical Hazard and Compatibility Information
Chemical Chemical Hazard and Compatibility Information Acetic Acid HAZARDS & STORAGE: Corrosive and combustible liquid. Serious health hazard. Reacts with oxidizing and alkali materials. Keep above freezing point (62 degrees F) to avoid rupture of carboys and glass containers.. INCOMPATIBILITIES: 2-amino-ethanol, Acetaldehyde, Acetic anhydride, Acids, Alcohol, Amines, 2-Amino-ethanol, Ammonia, Ammonium nitrate, 5-Azidotetrazole, Bases, Bromine pentafluoride, Caustics (strong), Chlorosulfonic acid, Chromic Acid, Chromium trioxide, Chlorine trifluoride, Ethylene imine, Ethylene glycol, Ethylene diamine, Hydrogen cyanide, Hydrogen peroxide, Hydrogen sulfide, Hydroxyl compounds, Ketones, Nitric Acid, Oleum, Oxidizers (strong), P(OCN)3, Perchloric acid, Permanganates, Peroxides, Phenols, Phosphorus isocyanate, Phosphorus trichloride, Potassium hydroxide, Potassium permanganate, Potassium-tert-butoxide, Sodium hydroxide, Sodium peroxide, Sulfuric acid, n-Xylene. Acetone HAZARDS & STORAGE: Store in a cool, dry, well ventilated place. INCOMPATIBILITIES: Acids, Bromine trifluoride, Bromine, Bromoform, Carbon, Chloroform, Chromium oxide, Chromium trioxide, Chromyl chloride, Dioxygen difluoride, Fluorine oxide, Hydrogen peroxide, 2-Methyl-1,2-butadiene, NaOBr, Nitric acid, Nitrosyl chloride, Nitrosyl perchlorate, Nitryl perchlorate, NOCl, Oxidizing materials, Permonosulfuric acid, Peroxomonosulfuric acid, Potassium-tert-butoxide, Sulfur dichloride, Sulfuric acid, thio-Diglycol, Thiotrithiazyl perchlorate, Trichloromelamine, 2,4,6-Trichloro-1,3,5-triazine -
Revised Version the Crystal Structure of Uytenbogaardtite, Ag3aus2, And
Title The crystal structure of uytenbogaardtite, Ag3AuS2, and its relationships with gold and silver sulfides-selenides Authors Bindi, L; Stanley, Christopher; Seryotkin, YV; Bakakin, VR; Pal'yanova, GA; Kokh, KA Date Submitted 2017-03-30 1 1 1237R – revised version 2 The crystal structure of uytenbogaardtite, Ag3AuS2, and its relationships 3 with gold and silver sulfides-selenides 4 1, 2 3,4 5 5 LUCA BINDI *, CHRISTOPHER J. STANLEY , YURII V. SERYOTKIN , VLADIMIR V. BAKAKIN , 3,4 3,4 6 GALINA A. PAL’YANOVA , KONSTANTIN A. KOKH 7 8 1Dipartimento di Scienze della Terra, Università di Firenze, Via G. La Pira 4, I-50121Firenze, Italy 9 2Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom 3 10 Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the Russian Academy of Sciences, pr. 11 Akademika Koptyuga, 3, Novosibirsk 630090, Russia 4 12 Novosibirsk State University, Pirogova str., 2, Novosibirsk 630090, Russia 5 13 Institute of Inorganic Chemistry, Siberian Branch of the RAS, prosp. Lavrentieva 3, 630090 Novosibirsk, Russia 14 15 * e-mail address: [email protected] 16 17 Abstract 18 The crystal structure of the mineral uytenbogaardtite, a rare silver-gold sulfide, was solved 19 using intensity data collected on a crystal from the type locality, the Comstock lode, Storey 20 County, Nevada (U.S.A.). The study revealed that the structure is trigonal, space group R 3 c, 3 21 with cell parameters: a = 13.6952(5), c = 17.0912(8) Å, and V = 2776.1(2) Å . The refinement 22 of an anisotropic model led to an R index of 0.0140 for 1099 independent reflections. -
[email protected] 1-800-424-9300 (North America) Website: +1-703-527-3887 (International)
Date of Issue: 27 July 2021 SAFETY DATA SHEET 1. SUBSTANCE AND SOURCE IDENTIFICATION Product Identifier RM Number: 8554 RM Name: IAEA-S-1 (Sulfur Isotopes in Silver Sulfide) Other Means of Identification: Not applicable. Recommended Use of This Material and Restrictions of Use This Reference Material (RM) is an international measurement standard that defines the Vienna Cañon-Diablo Troilite (VCDT) scale for relative differences in sulfur (S) isotope-number ratios, R(34S/32S). A unit of RM 8554 consists of one bottle containing approximately 0.5 g of silver sulfide (Ag2S). Company Information National Institute of Standards and Technology Standard Reference Materials Program 100 Bureau Drive, Stop 2300 Gaithersburg, Maryland 20899-2300 Telephone: 301-975-2200 Emergency Telephone ChemTrec: E-mail: [email protected] 1-800-424-9300 (North America) Website: https://www.nist.gov/srm +1-703-527-3887 (International) 2. HAZARDS IDENTIFICATION Classification Physical Hazard: Not classified. Health Hazard: Not classified. Label Elements Symbol: No symbol/No pictogram. Signal Word: No signal word. Hazard Statement(s): Not applicable. Precautionary Statement(s): Not applicable. Hazards Not Otherwise Classified: None. Ingredients(s) with Unknown Acute Toxicity: None. 3. COMPOSITION AND INFORMATION ON HAZARDOUS INGREDIENTS Substance: Silver sulfide Other Designations: Disilver sulfide. Components are listed in compliance with OSHA’s 29 CFR 1910.1200. For actual values, see the NIST Report of Investigation. Hazardous Component(s) CAS Number EC Number Nominal Mass Concentration (EINECS) (%) Silver sulfide 21548-73-2 244-438-2 100 RM 8554 Page 1 of 6 4. FIRST AID MEASURES Description of First Aid Measures Inhalation: If adverse effects occur, remove to well-ventilated (uncontaminated) area. -
Kemi-Riskline
1998:25 Scientific Basis for Swedish Occupational Standards XIX Ed. Per Lundberg Criteria Group for Occupational Standards National Institute for Working Life S-171 84 SOLNA, Sweden Translation: Frances van Sant arbete och hälsa vetenskaplig skriftserie ISBN 91–7045–497–3 ISSN 0346–7821 http://www.niwl.se/ah/ National Institute for Working Life National Institute for Working Life The National Institute for Working Life is Sweden’s national centre for work life research, development and training. The labour market, occupational safety and health, and work organisation are our main fields of activity. The creation and use of knowledge through learning, information and documentation are important to the Institute, as is international co- operation. The Institute is collaborating with interested parties in various development projects. The areas in which the Institute is active include: • labour market and labour law, • work organisation, • musculoskeletal disorders, • chemical substances and allergens, noise and electromagnetic fields, • the psychosocial problems and strain-related disorders in modern working life. ARBETE OCH HÄLSA Redaktör: Anders Kjellberg Redaktionskommitté: Anders Colmsjö och Ewa Wigaeus Hjelm © Arbetslivsinstitutet & författarna 1998 Arbetslivsinstitutet, 171 84 Solna, Sverige ISBN 91–7045–497–3 ISSN 0346-7821 http://www.niwl.se/ah/ Tryckt hos CM Gruppen Preface The Criteria Group of the Swedish National Institute for Working Life (NIWL) has the task of gathering and evaluating data which can be used as a scientific basis for the proposal of occupational exposure limits given by the National Board of Occupational Safety and Health (NBOSH). In most cases a scientific basis is written on request from the NBOSH. -
Chemical Names and CAS Numbers Final
Chemical Abstract Chemical Formula Chemical Name Service (CAS) Number C3H8O 1‐propanol C4H7BrO2 2‐bromobutyric acid 80‐58‐0 GeH3COOH 2‐germaacetic acid C4H10 2‐methylpropane 75‐28‐5 C3H8O 2‐propanol 67‐63‐0 C6H10O3 4‐acetylbutyric acid 448671 C4H7BrO2 4‐bromobutyric acid 2623‐87‐2 CH3CHO acetaldehyde CH3CONH2 acetamide C8H9NO2 acetaminophen 103‐90‐2 − C2H3O2 acetate ion − CH3COO acetate ion C2H4O2 acetic acid 64‐19‐7 CH3COOH acetic acid (CH3)2CO acetone CH3COCl acetyl chloride C2H2 acetylene 74‐86‐2 HCCH acetylene C9H8O4 acetylsalicylic acid 50‐78‐2 H2C(CH)CN acrylonitrile C3H7NO2 Ala C3H7NO2 alanine 56‐41‐7 NaAlSi3O3 albite AlSb aluminium antimonide 25152‐52‐7 AlAs aluminium arsenide 22831‐42‐1 AlBO2 aluminium borate 61279‐70‐7 AlBO aluminium boron oxide 12041‐48‐4 AlBr3 aluminium bromide 7727‐15‐3 AlBr3•6H2O aluminium bromide hexahydrate 2149397 AlCl4Cs aluminium caesium tetrachloride 17992‐03‐9 AlCl3 aluminium chloride (anhydrous) 7446‐70‐0 AlCl3•6H2O aluminium chloride hexahydrate 7784‐13‐6 AlClO aluminium chloride oxide 13596‐11‐7 AlB2 aluminium diboride 12041‐50‐8 AlF2 aluminium difluoride 13569‐23‐8 AlF2O aluminium difluoride oxide 38344‐66‐0 AlB12 aluminium dodecaboride 12041‐54‐2 Al2F6 aluminium fluoride 17949‐86‐9 AlF3 aluminium fluoride 7784‐18‐1 Al(CHO2)3 aluminium formate 7360‐53‐4 1 of 75 Chemical Abstract Chemical Formula Chemical Name Service (CAS) Number Al(OH)3 aluminium hydroxide 21645‐51‐2 Al2I6 aluminium iodide 18898‐35‐6 AlI3 aluminium iodide 7784‐23‐8 AlBr aluminium monobromide 22359‐97‐3 AlCl aluminium monochloride -
United States Paterrtg?Iee Patented V.Decp 28, ,1954
2,698,267 United States PaterrtG?iee Patented v.Decp 28, ,1954 serve as a‘ ?uxing agent toconvert ,theloxide land‘z-nitride, or: any~of the other impurities awhichmay;be;»present,t to a liquid slag which can be squeezed or workedaout of'sthe 2,698,267 , metal readily. No entirelyusatisfactory ?uxingfagent-Pfor WORKING 0F TITANIUM'" the working of titanium .has heretofore'been ‘developed. It is apparent that any procedure which-canbe-employed -\\___ Roy - A. Halversen, Deal-born,“ Mich» in the working of titanium-‘to give products superior-to No Drawing. Appli‘chtion'June'ZS, 1953, those now possible to obtain would be of~extremewalue It has now been found’that most of‘the' dit?culties Serial No.'364,209 encountered in the working of-ytitanium due to there 6 Claims. ' (Cl; 1484-115) A tention of non-metallic substances-and of-highlyreac-tive metals in the worked metal, and to the conversionrof metal . to oxide or nitride, can beeovercome almost entirely-by hot-working the metal while keepingpitsv surface blanketed This invention :relatesv to the .working. of. titanium, ‘ with an atmosphere comprising aphosphorus toxidepsuch particularly to a method for. working titanium'toobtain as phosphorus trioxide or phosphorus pentoxidew vWhen articles of improved properties. the working is carried out in this manner, substantially The increasing technological importance of titanium all of the titanium oxide and nitride, most of the-silica, metal is well known. Because of its light weight, high the reactive metals and their oxides and-manypther im strength, maintenancev of its strength at high \tempera- .. purities often associated with the metal in small propor tures and- other advantageousproperties, titanium has tions, are converted smoothly and rapidly to phosphorus shown itself to be unique among the metals for-{many containing slags which are liquid over substantially; the purposes. -
Reactions of Sulfur-Dicyanide and Sulfur-Dichlorides with Transition Metal Complexes." (1974)
Louisiana State University LSU Digital Commons LSU Historical Dissertations and Theses Graduate School 1974 Reactions of Sulfur-Dicyanide and Sulfur- Dichlorides With Transition Metal Complexes. Diane Singleton Hamilton Louisiana State University and Agricultural & Mechanical College Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_disstheses Recommended Citation Hamilton, Diane Singleton, "Reactions of Sulfur-Dicyanide and Sulfur-Dichlorides With Transition Metal Complexes." (1974). LSU Historical Dissertations and Theses. 2730. https://digitalcommons.lsu.edu/gradschool_disstheses/2730 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Historical Dissertations and Theses by an authorized administrator of LSU Digital Commons. For more information, please contact [email protected]. INFORMATION TO USERS This material was produced from a microfilm copy of the original document. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the original submitted. The following explanation of techniques is provided to help you understand markings or patterns which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting thru an image and duplicating adjacent pages to insure you complete continuity. 2. When an image on the film is obliterated with a large round black mark, it is an indication that the photographer suspected that the copy may have moved during exposure and thus cause a blurred image.