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Metso Pentabead® 20
METSO PENTABEAD ® 20 SAFETY DATA SHEET SECTION 1: IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING 1.1 Product identifier Product Name METSO PENTABEAD ® 20 Alternative names Sodium metasilicate pentahydrate CAS No. 10213-79-3 1.2 Relevant identified uses of the substance or mixture and uses advised against Identified use(s) General purpose industrial chemical for use in a wide range of applications. Complexing agent ; Corrosion inhibitor ; Flame retardant or fire preventing agent ; Flotation agent ; pH Regulating agent ; Viscosity control agent Uses advised against None known. 1.3 Details of the supplier of the safety data sheet Company Identification PQ Corporation P.O. Box 840 Valley Forge PA 19482 USA Telephone: +1 610-651-4200 E-Mail (competent person) [email protected] 1.4 Emergency telephone number Emergency Phone No. +1 800-424-9300 SECTION 2: HAZARDS IDENTIFICATION 2.1 Classification of the substance or mixture GHS Classification Skin Corr. 1B / Eye Dam. 1 STOT SE 3 Met. Corr. 1 2.2 Label elements Hazard pictogram(s) Signal word(s) Danger Hazard statement(s) Causes severe skin burns and eye damage. May cause respiratory irritation. May be corrosive to metals. Revision: v2 - en - Ref: 01-1-1-00-000 Date of Issue : 02/2015 PQUS - GHS - 3 Date Previous Issue : 04/2013 Page: 1 of 6 METSO PENTABEAD ® 20 Precautionary statement(s) Do not breathe dust. Use only outdoors or in a well-ventilated area. Wash thoroughly after handling. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. -
Guidance for Identification and Naming of Substance Under REACH
Guidance for identification and naming of substances under 3 REACH and CLP Version 2.1 - May 2017 GUIDANCE Guidance for identification and naming of substances under REACH and CLP May 2017 Version 2.1 2 Guidance for identification and naming of substances under REACH and CLP Version 2.1 - May 2017 LEGAL NOTICE This document aims to assist users in complying with their obligations under the REACH and CLP regulations. However, users are reminded that the text of the REACH and CLP Regulations is the only authentic legal reference and that the information in this document does not constitute legal advice. Usage of the information remains under the sole responsibility of the user. The European Chemicals Agency does not accept any liability with regard to the use that may be made of the information contained in this document. Guidance for identification and naming of substances under REACH and CLP Reference: ECHA-16-B-37.1-EN Cat. Number: ED-07-18-147-EN-N ISBN: 978-92-9495-711-5 DOI: 10.2823/538683 Publ.date: May 2017 Language: EN © European Chemicals Agency, 2017 If you have any comments in relation to this document please send them (indicating the document reference, issue date, chapter and/or page of the document to which your comment refers) using the Guidance feedback form. The feedback form can be accessed via the EVHA Guidance website or directly via the following link: https://comments.echa.europa.eu/comments_cms/FeedbackGuidance.aspx European Chemicals Agency Mailing address: P.O. Box 400, FI-00121 Helsinki, Finland Visiting address: Annankatu 18, Helsinki, Finland Guidance for identification and naming of substances under 3 REACH and CLP Version 2.1 - May 2017 PREFACE This document describes how to name and identify a substance under REACH and CLP. -
Optical Spectroscopy of Sodium Silicate Glasses
Processing and Application of Ceramics 7 [3] (2013) 117–121 DOI: 10.2298/PAC1303117M Optical spectroscopy of sodium silicate glasses prepared with nano- and micro-sized iron oxide particles Behzad Mehdikhani1,2,*, Gholam Hossein Borhani2 1Standard Research Institute, Building and Construction Department, Karaj, Iran 2Malek-e-ashtar University of Technology, Department of Materials Engineering, Isfahan, Iran Received 4 June 2013; received in revised form 27 July 2013; received in revised form 4 September 2013; accepted 7 September 2013 Abstract Wet chemical analysis and UV-VIS spectroscopy methods were used to determine the oxidation state of iron in Na2O·2SiO2 glasses, containing 0.3 mol% of Fe2O3 . The oxidation state of iron in the sodium silicate glasses was varied by changing the size of iron oxide particles used for preparation of glass batches and the melting temperature. In sodium silicate glasses iron commonly exists as an equilibrium mixture of ferrous ions, Fe2+, and ferric ions Fe3+. The increase of the melting temperature led to the transformation of ferric ions to ferrous ions. It was also shown that in the glasses prepared from nano-sized iron oxide particles the Fe2+/Fe3+ equilib- rium ratio is lower (i.e. smaller amount of ferrous ions were formed) comparing to that in the glasses prepared from micro-sized iron oxide particles. Keywords: sodium silicate glass, iron oxide, UV-VIS spectroscopy, wet chemical analysis I. Introduction tant in adjusting the transmittance of glass in the wave- Iron in glasses exists as equilibrium between the yel- length regions of UV, visible light and IR [6]. The pres- low ferric ion, Fe3+, and the blue ferrous ion, Fe2+. -
Effects of Adding Silica Particles on Certain Properties of Resin‑Modified Glass‑Ionomer Cement
Published online: 2019-09-23 Original Article Effects of adding silica particles on certain properties of resin‑modified glass‑ionomer cement Nayef H. Felemban1, Mohamed I. Ebrahim2 1Department of Orthodontics, Faculty of Dentistry, Taif University, Taif, Saudi Arabia, Correspondence: Dr. Nayef H. Felemban 2Department Restorative Dentistry, Faculty of Dentistry, Email: [email protected] Taif University, Taif, Saudi Arabia ABSTRACT Objective: This study was conducted to evaluate the effect of incorporation of silica particles with different concentrations on some properties of resin‑modified glass ionomer cement (RMGIC): Microleakage, compressive strength, tensile strength, water sorption, and solubility. Materials and Methods: Silica particle was incorporated into RMGIC powder to study its effects, one type of RMGIC (Type II visible light-cured) and three concentrations of silica particles (0.06, 0.08, and 0.1% weight) were used. One hundred and twenty specimens were fabricated for measuring microleakage, compressive strength, tensile strength, water sorption, and solubility. Statistical Analysis: One-way analysis of variance and Tukey’s tests were used for measuring significance between means where P ≤ 0.05. Results: RMGIC specimens without any additives showed significantly highest microleakage and lowest compressive and tensile strengths. Conclusion: Silica particles added to RMGIC have the potential as a reliable restorative material with increased compressive strength, tensile strength, and water sorption but decreased microleakage and water solubility. Key words: Class V, glass-ionomer, microleakage, silica particle, teeth restoration INTRODUCTION acquire chemical adhesion and antibacterial properties from GICs, but from resin composites, RMGICs Incorporation of photopolymerizable components into acquire many properties such as setting behavior, conventional acid‑base mixture leads to formation of good mechanical properties, and wear resistance.[2] hybrid materials named resin‑modified glass ionomer. -
Product Stewardship Summary Liquid Sodium Silicates
Product Stewardship Summary Liquid Sodium Silicates Summary Sodium silicates serve a wide range of end use markets, including soaps and detergents, pulp and paper, paint and pigments, catalysts, and metal cleaning. 1. Chemical Identity Name: Sodium Silicate Chemical Abstracts Service (CAS) number: 1344-09-8 Sodium silicate is the generic name for a series of compounds derived from soluble sodium silicate glasses. These materials are aqueous liquids containing sodium oxide (Na2O) and silicon dioxide (SiO2) in various ratios. Varying the amount of SiO2 and Na2O gives solutions having differing properties and diverse industrial applications. 2. Production Sodium silicate glass is made by fusing high purity silica sand and soda ash in open hearth furnaces at 1300°C. The molten glass is cooled, fractured, and dissolved under pressure with hot water and steam. OxyChem is a leading manufacturer of sodium silicates and operates facilities in Augusta, GA; Chicago, IL; Cincinnati, OH; Dallas, TX; and Mobile, AL. 3. Uses Sodium Silicates are used in a wide variety of applications. Some of the principle uses are summarized in this section. Detergents & Soaps Many detergent operations are performed with sodium silicates. Such operations range from metal cleaning and textile processing to washing laundry, dishes, dairy equipment, bottles, floors, and automobiles. Silicates are incorporated in synthetic detergent compositions to control corrosion and minimize alkali attack. Without silicates, many synthetic detergent compositions would be corrosive to aluminum, zinc, and certain metal alloy parts in washers. They may also attack porcelain enamel and overglaze fine china decorations. Adhesives and Cements Liquid sodium silicates are widely used as adhesives in making fiber drums, paper tubes, and other materials. -
Synthesized Mesoporous Silica and Calcium Aluminate Cement Fillers
Dental Materials Journal 2017; 36(6): 706–713 Synthesized mesoporous silica and calcium aluminate cement fillers increased the fluoride recharge and lactic acid neutralizing ability of a resin-based pit and fissure sealant Atikom SURINTANASARN1, Krisana SIRALERTMUKUL2 and Niyom THAMRONGANANSKUL1 1 Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, 34 Henri-Dunant Rd., Pathumwan, Bangkok 10330, Thailand 2 Metallurgy and Materials Science Research Institute, Chulalongkorn University, Soi Chulalongkorn 12, Phayathai Rd., Pathumwan, Bangkok 10330, Thailand Corresponding author, Niyom THAMRONGANANSKUL; E-mail: [email protected] This study evaluated the effect of different types of filler in a resin-based pit and fissure sealant on fluoride release, recharge, and lactic acid neutralization. Resin-based sealant was incorporated with 5% w/w of the following fillers: calcium aluminate cement (CAC), synthesized mesoporous silica (SI), a CAC and SI mixture (CAC+SI), glass-ionomer powder (GIC), and acetic acid-treated GIC (GICA). Sealant without filler served as control. The samples were immersed in deionized water or a lactic acid solution and the concentration of fluoride in the water, before and after fluoride recharge, and the lactic acid pH change, respectively, were determined. The CAC+SI group demonstrated the highest fluoride release after being recharged with fluoride gel. The CAC+SI group also demonstrated increased lactic acid pH. These findings suggest that a resin-based sealant containing synthesized mesoporous silica and calcium aluminate cement may enhance remineralization due to fluoride release and higher pH. Keywords: Calcium aluminate cement, Fluoride recharge, Fluoride release, Mesoporous silica, Pit and fissure sealant empty channels can absorb and encapsulate relatively INTRODUCTION large amounts of molecules11). -
Study of the System Cao-Sio2-H2O at 30 C and of the Reaction of Water On
U.S. Department of Commerce Bureau of Standards RESEARCH PAPER RP687 Part of Bureau of Standards Journal of Research, vol. 12, June 1934 STUDY OF THE SYSTEM CaO-Si02-H2 AT 30 C AND OF THE REACTION OF WATER ON THE ANHYDROUS CALCIUM SILICATES By E. P. Flint and Lansing S. Wells abstract A graph has been prepared representing the solubility of silica at 30 C in solu- tions containing increasing concentrations of lime up to saturation, the solutions being in "equilibrium" with solid phases composed of hydrated combinations of lime and silica. An electrometric and analytical study of both supersaturated and unsaturated solutions of silica at definite concentrations of lime, when corre- lated with these equilibrium solubility relationships, indicates the existence of definite compounds in the system CaO-Si0 2-H 2 which may be the hydrated calcium salts of orthosilicic acid. Experimental values were obtained for the hydrolysis constants of these salts from which ionization constants for the four steps in the dissociation of orthosilicic acid were calculated. A study of the reaction of water upon the anhydrous calcium silicates (CaO Si02 , 3CaO- 2Si0 2 , 7-2CaO-Si0 ,3-2CaO Si0 , ) showed that the products formed depend 2 , 2 3CaOSi0 2 upon the equilibrium relationships of the system CaO-Si02-H 2 0. Of these compounds all but monocalcium silicate (CaO-Si02 ) form solutions which pre- cipitate hydrated calcium silicate on standing. Application of the same methods to a study of the reaction of water upon a portland cement indicated that hydrated calcium orthosilicate is formed during the hydration of portland cement. -
United States Patent (19) 11 4,169,930 Blount 45) Oct
United States Patent (19) 11 4,169,930 Blount 45) Oct. 2, 1979 (54) PROCESS FOR THE PRODUCTION OF 58 Field of Search ................. 260/448.2 N, 448.2 E; AMNO SILICATE COMPOUNDS AND 528/38 THER CONDENSATION PRODUCTS 76 Inventor: David H. Blount, 5450 Lea St., San 56) References Cited Diego, Calif. 92105 U.S. PATENT DOCUMENTS 21 Appl. No.: 786,617 4,011,253 3/1977 Blount ........................... 260/448.2 E 4,089,883 5/1978 Blount ....................... 260/448.2 E X (22) Filed: Apr. 8, 1977 Primary Examiner-Paul F. Shaver Related U.S. Application Data 57 ABSTRACT 60) Division of Ser. No. 652,338, Jan. 26, 1976, Pat. No. 4,033,935, which is a continuation-in-part of Ser. No. Silicic-amino compounds are formed by the chemical 559,313, Mar. 17, 1975, Pat. No. 3,979,362, which is a reaction of silicic acid with amino compounds in the continuation-in-part of Ser. No. 71,628, Sep. 11, 1970, presence of a suitable alkali at a suitably elevated tem abandoned. perature, and then by reacting the resultant compounds 51 Int. Cl’.............................................. C08G 77/04 with an aldehyde, a condensation product is formed. (52) U.S. C. .............................. 528/38; 260/448.2 N; 260/448.2 E 4 Claims, No Drawings 4,169,930 1. 2 PROCESS FOR THE PRODUCTION OF AMINO Reactions with other amino compounds are expected SILICATE COMPOUNDS AND THER to be similar to these, so that the mol ratios of the reac CONDENSATION PRODUCTS tants should be selected accordingly. Amino silicate compounds are theorized to react with CROSS-REFERENCE TO RELATED an aldehyde to form condensation products as follows: APPLICATIONS Urea silicate is theorized to react with formaldehyde This application is a division of U.S. -
Sodium Silicate Solution 1
MSDS Number: S4982 * * * * * Effective Date: 03/30/11 * * * * * Supercedes: 09/23/09 Sodium Silicate Solution 1. Product Identification Synonyms: Water Glass; Soluble Glass; Silicate of Soda; Egg Preserver CAS No.: Not applicable to mixtures. Molecular Weight: Not applicable to mixtures. Chemical Formula: Na2O(SiO2)x.(H2O)x Product Codes: 3877 2. Composition/Information on Ingredients Ingredient CAS No Percent Hazardous --------------------------------------- ------------ ------------ --------- Sodium Silicate 1344-09-8 35 - 40% Yes Water 7732-18-5 60 - 65% No 3. Hazards Identification Emergency Overview -------------------------- WARNING! HARMFUL IF SWALLOWED OR INHALED. CAUSES SEVERE IRRITATION TO EYES, SKIN AND RESPIRATORY TRACT. SAF-T-DATA(tm) Ratings (Provided here for your convenience) ----------------------------------------------------------------------------------------------------------- Health Rating: 2 - Moderate Flammability Rating: 1 - Slight Reactivity Rating: 1 - Slight Contact Rating: 3 - Severe Lab Protective Equip: GOGGLES & SHIELD; LAB COAT & APRON; VENT HOOD; PROPER GLOVES Storage Color Code: Green (General Storage) ----------------------------------------------------------------------------------------------------------- Potential Health Effects ---------------------------------- Diluted solutions of sodium silicate are strong alkaline irritants. The solid sodium silicate is corrosive. Exposure to alkaline corrosives may result in severe burns depending on the concentration and duration of exposure. Sodium silicate -
THE ACTION of SODIUM SILICATE on the FLOTATION of SALT-TYPE MINERALS with OLEIC ACID. a Thesis Submitted for the Degree of Docto
THE ACTION OF SODIUM SILICATE ON THE FLOTATION OF SALT-TYPE MINERALS WITH OLEIC ACID. A thesis submitted for the degree of Doctor of Philosophy of the University of London and the Diploma of Imperial College by Konstantinos I. Marinakis Department of Mineral Resources Engineering Royal School of Mines Imperial College University of London March 1980 To my parents ABSTRACT A study has been made of the depression of the fatty acid flotation of fluorite, barite and calcite with sodium silicates of different silica to soda ratios. The investigation included measurements of the solubility and electrokinetic properties of the minerals in the presence of oleic acid and sodium silicate. The results obtained have been critically compared with those quoted in the literature and the mechanism of oleate and silicate adsorption has been elucidated. The solubility of the minerals followed that predicted by solution equilibria data. Sodium oleate decreased the dissolution rate of calcite and fluorite by forming a layer of calcium oleate on the minerals' surface. Sodium silicate decreased the solubility of the minerals because of the adsorption of silicate species. The IEP of barite and fluorite occurred at pH 4.5 and 9.5, respectively and calcite was negatively charged over the pH range studied (pH > 9.0). Sodium oleate and sodium silicate increased the negative electrophoretic mobility of the minerals at high concentrations at pH 10.0. Oleic acid was abstracted by the minerals by a chemical reaction resulting in the formation of a new phase of calcium or barium oleate. The flotation recovery of the minerals closely followed the amount of oleate abstracted by the minerals. -
A Bound Form of Silicon in Glycosaminoglycans And
Proc. Nat. Acad. Sci. USA Vol. 70, No. 5, pp. 1608-1612, May 1973 A Bound Form of Silicon in Glycosaminoglycans and Polyuronides (polysaccharide matrix/connective tissue) KLAUS SCHWARZ Laboratory of Experimental Metabolic Diseases, Veterans Administration Hospital, Long Beach, California 90801; and Department of Biological Chemistry, School of Medicine, University of California at Los Angeles, Calif. 90024 Communicated by P. D. Boyer, March 19, 1973 ABSTRACT Silicon was found to be a constituent of notably hyaluronic acid, chondroitin 4-sulfate, dermatan certain glycosaminoglycans and polyuronides, where it sulfate, and heparan sulfate, contain relatively large amounts occurs firmly bound to the polysaccharide matrix. 330-554 ppm of bound Si were detected in purified hyaluronic acid of the element, not as free silicate ions or silicic acid but as a from umbilical cord, chondroitin 4-sulfate, dermatan firmly bound component of the polysaccharide matrix. High sulfate, and heparan sulfate. These amounts correspond to amounts of bound Si were also detected in two polyuronides, 1 atom of Si per 50,000-85,000 molecular weight or 130-280 pectin and alginic acid. Stability tests and enzymatic studies repeating units. 57-191 ppm occur in chondroitin 6-sulfate, evidence for the assumption that the Si is linked heparin, and keratan sulfate-2 from cartilage, while provide hyaluronic acids from vitreous humor and keratan sulfate- covalently to the polysaccharides in question, possibly as an 1 from cornea were Si-free. Large amounts of bound Si are ether (or ester-like) derivative of silicic acid, i.e., a silanolate. also present in pectin (2580 ppm) and alginic acid (451 ppm). -
Material Safety Data Sheet
Date of Issue: 08 July 2014 SAFETY DATA SHEET 1. SUBSTANCE AND SOURCE IDENTIFICATION Product Identifier SRM Number: 3150 SRM Name: Silicon (Si) Standard Solution Other Means of Identification: Not applicable. Recommended Use of This Material and Restrictions of Use This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of silicon. A unit of SRM 3150 consists of 50 mL of aqueous solution in a high-density polyethylene bottle sealed in an aluminized bag. The solution is prepared gravimetrically from sodium metasilicate nonahydrate to contain a known mass fraction of silicon in water. 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: FAX: 301-948-3730 1-800-424-9300 (North America) E-mail: [email protected] +1-703-527-3887 (International) Website: http://www.nist.gov/srm 2. HAZARDS IDENTIFICATION Classification Physical Hazard: Not classified. Health Hazard: Skin Corrosion/Irritation Category 2 Serious Eye Damage/Eye Irritation Category 1 Label Elements Symbol Signal Word DANGER Hazard Statement(s) H315 Causes skin irritation. H318 Causes serious eye damage. Precautionary Statement(s) P264 Wash hands thoroughly after handling. P280 Wear protective gloves, protective clothing, and eye protection. P302+P352 If on skin: Wash with plenty of water. P332+P313 If skin irritation occurs: Get medical attention. P305+P351+P338 If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P310 Immediately call a doctor.