calcium carbonate | american elements

calcium carbonate | american elements

Classification of the substance or mixtureClassification according to Regulation (EC) No 1272/2008The substance is not classified as hazardous to health or the environment according to the CLP regulation.Classification according to Directive 67/548/EEC or Directive 1999/45/ECN/AInformation concerning particular hazards for human and environment:No data availableHazards not otherwise classifiedNo data availableLabel elementsLabelling according to Regulation (EC) No 1272/2008N/AHazard pictogramsN/ASignal wordN/AHazard statementsN/AWHMIS classificationNot controlledClassification systemHMIS ratings (scale 0-4)(Hazardous Materials Identification System) HEALTH FIRE REACTIVITY001Health (acute effects) = 0Flammability = 0Physical Hazard = 1Other hazardsResults of PBT and vPvB assessmentPBT:N/AvPvB:N/A

Description of first aid measuresIf inhaled:Supply patient with fresh air. If not breathing, provide artificial respiration. Keep patient warm.Seek immediate medical advice.In case of skin contact:Immediately wash with soap and water; rinse thoroughly.Seek immediate medical advice.In case of eye contact:Rinse opened eye for several minutes under running water. Consult a physician.If swallowed:Seek medical treatment.Information for doctorMost important symptoms and effects, both acute and delayedNo data availableIndication of any immediate medical attention and special treatment neededNo data available

Extinguishing mediaSuitable extinguishing agentsProduct is not flammable. Use fire-fighting measures that suit the surrounding fire.Special hazards arising from the substance or mixtureIf this product is involved in a fire, the following can be released:Carbon monoxide and carbon dioxideCalcium oxideAdvice for firefightersProtective equipment:Wear self-contained respirator.Wear fully protective impervious suit.

Personal precautions, protective equipment and emergency proceduresUse personal protective equipment. Keep unprotected persons away.Ensure adequate ventilationEnvironmental precautions:Do not allow material to be released to the environment without official permits.Do not allow product to enter drains, sewage systems, or other water courses.Do not allow material to penetrate the ground or soil.Methods and materials for containment and cleanup:Pick up mechanically.Prevention of secondary hazards:No special measures required.Reference to other sectionsSee Section 7 for information on safe handlingSee Section 8 for information on personal protection equipment.See Section 13 for disposal information.

HandlingPrecautions for safe handlingKeep container tightly sealed.Store in cool, dry place in tightly closed containers.Information about protection against explosions and fires:The product is not flammableConditions for safe storage, including any incompatibilitiesRequirements to be met by storerooms and receptacles:No special requirements.Information about storage in one common storage facility:Keep away from fluorineDo not store together with acids.Store away from oxidizing agents.Further information about storage conditions:Keep container tightly sealed.Store in cool, dry conditions in well-sealed containers.Specific end use(s)No data available

Additional information about design of technical systems:Properly operating chemical fume hood designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.Control parametersComponents with limit values that require monitoring at the workplace:471-34-1 Calcium carbonate (100.0%)PEL (USA) Long-term value: 15* 5** mg/m3*total dust **respirable fractionREL (USA) Long-term value: 10* 5** mg/m3*total dust **respirable fractionTLV (USA) TLV withdrawnAdditional information:No dataExposure controlsPersonal protective equipmentFollow typical protective and hygienic practices for handling chemicals.Keep away from foodstuffs, beverages and feed.Remove all soiled and contaminated clothing immediately.Wash hands before breaks and at the end of work.Maintain an ergonomically appropriate working environment.Breathing equipment:Use suitable respirator when high concentrations are present.Recommended filter device for short term use:Use a respirator with type N95 (USA) or PE (EN 143) cartridges as a backup to engineering controls. Risk assessment should be performed to determine if air-purifying respirators are appropriate. Only use equipment tested and approved under appropriate government standards.Protection of hands:Impervious glovesInspect gloves prior to use.Suitability of gloves should be determined both by material and quality, the latter of which may vary by manufacturer.Penetration time of glove material (in minutes)No data availableEye protection:Safety glassesBody protection:Protective work clothing.

Information on basic physical and chemical propertiesAppearance:Form: PowderColor: WhiteOdor: OdorlessOdor threshold: No data available.pH: N/AMelting point/Melting range: 800 C (1472 F) (dec)Boiling point/Boiling range: No data availableSublimation temperature / start: No data availableFlammability (solid, gas)No data available.Ignition temperature: No data availableDecomposition temperature: No data availableAutoignition: No data available.Danger of explosion: Product does not present an explosion hazard.Explosion limits:Lower: No data availableUpper: No data availableVapor pressure: N/ADensity at 20 C (68 F): 2.93 g/cm3 (24.451 lbs/gal)Relative densityNo data available.Vapor densityN/AEvaporation rateN/ASolubility in Water (H2O): InsolublePartition coefficient (n-octanol/water): No data available.Viscosity:Dynamic: N/AKinematic: N/AOther informationNo data available

ReactivityNo data availableChemical stabilityStable under recommended storage conditions.Thermal decomposition / conditions to be avoided:Decomposition will not occur if used and stored according to specifications.Possibility of hazardous reactionsReacts with strong oxidizing agentsConditions to avoidNo data availableIncompatible materials:AcidsFluorineOxidizing agentsHazardous decomposition products:Calcium oxideCarbon monoxide and carbon dioxide

Information on toxicological effectsAcute toxicity:The Registry of Toxic Effects of Chemical Substances (RTECS) contains acute toxicitydata for this substance.LD/LC50 values that are relevant for classification:Oral LD50 6450 mg/kg (rat)Skin irritation or corrosion:May cause irritationEye irritation or corrosion:May cause irritationSensitization:No sensitizing effects known.Germ cell mutagenicity:No effects known.Carcinogenicity:No classification data on carcinogenic properties of this material is available from the EPA, IARC, NTP, OSHA or ACGIH.Reproductive toxicity:No effects known.Specific target organ system toxicity - repeated exposure:No effects known.Specific target organ system toxicity - single exposure:No effects known.Aspiration hazard:No effects known.Subacute to chronic toxicity:The Registry of Toxic Effects of Chemical Substances (RTECS) contains multiple dose toxicity data for this substance.Additional toxicological information:To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.

ToxicityAquatic toxicity:No data availablePersistence and degradabilityNo data availableBioaccumulative potentialNo data availableMobility in soilNo data availableAdditional ecological information:Do not allow material to be released to the environment without official permits.Avoid transfer into the environment.Results of PBT and vPvB assessmentPBT:N/AvPvB:N/AOther adverse effectsNo data available

UN-NumberDOT, ADN, IMDG, IATAN/AUN proper shipping nameDOT, ADN, IMDG, IATAN/ATransport hazard class(es)DOT, ADR, ADN, IMDG, IATAClassN/APacking groupDOT, IMDG, IATAN/AEnvironmental hazards:N/ASpecial precautions for userN/ATransport in bulk according to Annex II of MARPOL73/78 and the IBC CodeN/ATransport/Additional information:DOTMarine Pollutant (DOT):No

Safety, health and environmental regulations/legislation specific for the substance or mixtureNational regulationsAll components of this product are listed in the U.S. Environmental Protection Agency Toxic Substances Control Act Chemical substance Inventory.All components of this product are listed on the Canadian Domestic Substances List (DSL).SARA Section 313 (specific toxic chemical listings)Substance is not listed.California Proposition 65Prop 65 - Chemicals known to cause cancerSubstance is not listed.Prop 65 - Developmental toxicitySubstance is not listed.Prop 65 - Developmental toxicity, femaleSubstance is not listed.Prop 65 - Developmental toxicity, maleSubstance is not listed.Information about limitation of use:For use only by technically qualified individuals.Other regulations, limitations and prohibitive regulationsSubstance of Very High Concern (SVHC) according to the REACH Regulations (EC) No. 1907/2006.Substance is not listed.The conditions of restrictions according to Article 67 and Annex XVII of the Regulation (EC) No 1907/2006 (REACH) for the manufacturing, placing on the market and use must be observed.Substance is not listed.Annex XIV of the REACH Regulations (requiring Authorisation for use)Substance is not listed.REACH - Pre-registered substancesSubstance is listed.Chemical safety assessment:A Chemical Safety Assessment has not been carried out.

Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2021 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.

See more Calcium products. Calcium (atomic symbol: Ca, atomic number: 20) is a Block S, Group 2, Period 4 element with an atomic weight of 40.078. The number of electrons in each of Calcium's shells is [2, 8, 8, 2] and its electron configuration is [Ar] 4s2. The calcium atom has a radius of 197 pm and a Van der Waals radius of 231 pm. Calcium was discovered and first isolated by Sir Humphrey Davy in 1808. It is the fifth most abundant element in the earth's crust and can be found in minerals such as dolomite, gypsum, plagioclases, amphiboles, pyroxenes and garnets. In its elemental form, calcium has a dull gray-silver appearance. Calcium is a reactive, soft metal that is a member of the alkaline earth elements. It frequently serves as an alloying agent for other metals like aluminum and beryllium industrial materials like cement and mortar are composed of calcium compounds like calcium carbonate. It is also an biologically essential substance found in teeth, bones, and shells. The name "calcium" originates from the Latin word "calics," meaning lime.

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the advantage of alcoholcalcium method on the formation and the stability of vaterite against ethanolwater binary solvent method | springerlink

the advantage of alcoholcalcium method on the formation and the stability of vaterite against ethanolwater binary solvent method | springerlink

The advantage of alcoholcalcium method on the formation and the stability of vaterite against ethanolwater binary solvents (EWBS) method was studied through comparative experiment. The polymorphs and morphologies of CaCO3 were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD results show that vaterite slowly decreases from 90.4 to 82.5% as increasing aging time from 0 to 1320 min in alcoholcalcium system, while quickly decreases from 46.5% to 0% at the same aging time in EWBS system. The similar variation as reaction temperature was found in both systems. SEM images indicate that calcite presents its typical rhombohedral morphology in both systems, while the morphologies of vaterite particles in two systems are different. In alcoholcalcium system, small vaterite nanoparticles aggregate into spherical microparticles, and these microparticles become porous, loose, and irregular, even incomplete, as increasing aging time and reaction temperature, while in EWBS system, vaterite nanoparticles aggregate into irregular microparticles. The advantage of alcoholcalcium method was discussed from the formation of the complex compound CaCl2n(C2H5OH) in alcohol and its decomplexation in aqueous medium.

H. Wei, Q. Shen, Y. Zhao, D.J. Wang, and D.F. Xu: Influence of polyvinylpyrrolidone on the precipitation of calcium carbonate and on the transformation of vaterite to calcite. J. Cryst. Growth 250, 516524 (2003).

Z.G. Cui, C.F. Cui, Y. Zhu, and B.P. Binks: Multiple phase inversion of emulsions stabilized by in situ surface activation of CaCO3 nanoparticles via adsorption of fatty acids. Langmuir 28, 314320 (2011).

J. Nakamura, G. Poologasundarampillai, J.R. Jones, and T. Kasuga: Tracking the formation of vaterite particles containing aminopropyl-functionalized silsesquioxane and their structure for bone regenerative medicine. J. Mater. Chem. B 1, 44464454 (2013).

N. Qiu, H. Yin, B. Ji, N. Klauke, A. Glidle, Y. Zhang, H. Song, L. Cai, L. Ma, G. Wang, L. Chen, and W. Wang: Calcium carbonate microspheres as carriers for the anticancer drug camptothecin. Mater. Sci. Eng. C 32, 26342640 (2012).

C.P. Hu, C.J. Chen, Y. Wu, J. Li, Y.C. Hu, L.G. Wei, and J.X. Jiang: The mechanochemical route of vaterite synthesis using sodium hexametaphosphate as an inorganic additive. J. Am. Ceram. Soc. 102, 71167124 (2019).

J.X. Jiang, J.Z. Ye, G.W. Zhang, X.H. Gong, L.H. Nie, and J.N. Liu: Polymorph and morphology control of CaCO3 via temperature and PEG during the decomposition of Ca(HCO3)2. J. Am. Ceram. Soc. 95, 37353738 (2012).

J.X. Jiang, C.J. Chen, B.W. Xiao, Z.L. Bai, C.H. Jiang, C.C. Yang, Y. Wu, and X.L. Wang: Hierarchical CaCO3 particles self-assembled from metastable vaterite and stable calcite during the decomposition of Ca(HCO3)2. CrystEngComm 19, 73327338 (2017).

J.Z. Jiang, Y.X. Ma, T. Zhang, Z.Y. Liang, and Z.G. Cui: Morphology and size control of calcium carbonate crystallized in a reverse micelle system with switchable surfactants. RSC Adv. 5, 8021680219 (2015).

Y.M. Guo, F.F. Wang, J. Zhang, L. Yang, X.M. Shi, Q.L. Fang, and X.M. Ma: Biomimetic synthesis of calcium carbonate with different morphologies under the direction of different amino acids. Res. Chem. Intermed. 39, 24072415 (2013).

L. Liu, J. Jiang, and S.H. Yu: Polymorph selection and structure evolution of CaCO3 mesocrystals under control of poly(sodium 4-styrenesulfonate): Synergetic effect of temperature and mixed solvent. Cryst. Growth Des. 14, 60486056 (2014).

T. Beuvier, B. Calvignac, G.J.R. Delcroix, M.K. Tran, S. Kodjikian, N. Delorme, J.F. Bardeau, A. Gibaud, and F. Boury: Synthesis of hollow vaterite CaCO3 microspheres in supercritical carbon dioxide medium. J. Mater. Chem. 21, 97579761 (2011).

A.X. Wang, D.Q. Chu, L.M. Wang, B.G. Mao, H.M. Sun, Z.C. Ma, G. Wang, and L.X. Wang: Preparation and characterization of novel spica-like hierarchical vaterite calcium carbonate and a hydrophilic poly(vinylidene fluoride)/calcium carbonate composite membrane. CrystEngComm 16, 51985205 (2014).

B.G. Mao, D.Q. Chu, A.X. Wang, L.M. Wang, H.M. Sun, Z.Y. Zhang, and X.Z. Yang: Fabrication of flowerlike vaterite calcium carbonate crystal aggregates by self-assembly in water/ethanol mixtures. Eur. J. Inorg. Chem. 35, 59585963 (2013).

K.K. Sand, J.D. Rodriguez-Blanco, E. Makovicky, L.G. Benning, and S.L.S. Stipp: Crystallization of CaCO3 in water-alcohol mixtures: Spherulitic growth, polymorph stabilization, and morphology change. Cryst. Growth Des. 12, 842853 (2011).

S.F. Chen, S.H. Yu, J. Jiang, F.Q. Li, and Y.K. Liu: Polymorph discrimination of CaCO3 mineral in an ethanol/water solution: Formation of complex vaterite superstructures and aragonite rods. Chem. Mater. 18, 115122 (2006).

X. Geng, L. Liu, J. Jiang, and S.H. Yu: Crystallization of CaCO3 mesocrystals and complex aggregates in a mixed solvent media using polystyrene sulfonate as a crystal growth modifier. Cryst. Growth Des. 10, 34483453 (2010).

A.J. Xie, Y.H. Shen, C.Y. Zhang, Z.W. Yuan, X.M. Zhu, and Y.M. Yang: Crystal growth of calcium carbonate with various morphologies in different amino acid systems. J. Cryst. Growth 285, 436443 (2005).

This work is funded by the Open Foundation of Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei Provincial Key Laboratory of Green Materials for Light Industry (201907A07), and Training Program of Innovation and Entrepreneurship for Undergraduates (S201910500029).

Xiao, H., Hu, C., Chen, C. et al. The advantage of alcoholcalcium method on the formation and the stability of vaterite against ethanolwater binary solvent method. Journal of Materials Research 35, 289298 (2020). https://doi.org/10.1557/jmr.2019.412

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