Kalkstein
CALCITE · CHALK · ARAGONITE · Micromarble · PARIS WHITE · GROUND LIMESTONE · PRECIPITATED CHALK · WHITING
Identifikatoren & physikalische Daten
| CAS No. | 1317-65-3 |
|---|---|
| Summenformel | CaCO3 |
| Durchschnittliche Molmasse | 100,09 g/mol |
| Monoisotopische Masse | 99,94733484 g/mol |
| SMILES | O=C([O-])[O-].[Ca+2] |
| InChIKey | VTYYLEPIZMXCLO-UHFFFAOYSA-L |
| PubChem CID | 10112 |
| ChEMBL | CHEMBL1200539 |
| ChEBI | CHEBI:3311 |
| EC No. | 207-439-9 |
| DTXSID | DTXSID3036238 |
| Lokaler Name | Kalkstein |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 63,2 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 3 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 5 |
| Formalladung | 0 |
| Komplexität | 18,8 |
| Stoffklassen | Mineral Dusts -> Other Mineral Dusts |
| Polymers | Plastics -> Pigments agentsPlastics -> Polyolefin-IPURPolyolefin-IIPVC (soft)ABSPVC (rigid)PETPMMAPAPC(E)PS |
| Kosmetika | Cosmetic ingredients (Calcium Carbonate) -> CIR (Cosmetic Ingredient Review)BufferingOpacifyingOral careViscosity controllingAbsorbentCosmetic colorantBulkingAbrasive |
| pH | pH = 8 to 9 |
| Pestizide | Agrochemicals -> Pesticide active substancesActive substance -> EU Pesticides database: Not approvedActive substance -> EU Pesticides database: Approved |
| Geruch | Odorless |
| Geschmack | Chalky tasteTasteless |
| Lebensmittelzusatzstoffe | Foods, Drugs -> FDA Regulatory Status of Color AdditivesUse unspecified -> FDA Substance added to foodANTICAKING AGENT OR FREE-FLOW AGENT, COLOR OR COLORING ADJUNCT, DRYING AGENT, FORMULATION AID, HUMECTANT, LEAVENING AGENT, LUBRICANT OR RELEASE AGENT, MASTICATORY SUBSTANCE, NUTRIENT SUPPLEMENT, PH CONTROL AGENT, PROCESSING AID -> FDA Substance added to food |
| Dichte | 2.7 to 2.95 (NIOSH, 2024)Bulk density: 40-100 lb/cubic ftscreen analysis: usually 200 to 325 mesh2.8 g/cm³2.7-2.952.93 @25 °C2.93 g/mL at 25 °C(lit.) |
| Color/Form | White hexagonal crystals or powder (Calcite)white orthrombic crystals or powder (Argonite)colorless hexagonal crystals (vaterite) |
| Löslichkeit | 0.001 % (NIOSH, 2024)Practically insoluble in water and in alcohol. Dissolves with effervescence in diluted acetic acid, in diluted hydrochloric acid and in diluted nitric acid, and the resulting solutions, after boiling, give positive tests for calcium.Solubility Product constant: 3.36X10-9 at 25 °CALKALI HYDROXIDE REDUCES ITS SOLUBILITYINSOL IN ALCOHOLSOLUBILITY IN H2O INCR BY AMMONIUM SALT & BY CO25 M HCl: 0.1 M at 20 °C, clear, colorless |
| Corrosivity | Non-corrosive |
| Schmelzpunkt | 825 °C |
| Siedepunkt | 2850 °C |
| Aggregatzustand | random crystals |
| Farbe | Gray |
| Spezifische Wärmekapazität | Cp(crystal): 0.82 J/(g·K), at 25℃ |
| InChI | 1S/CH2O3.Ca/c2-1(3)4/h(H2,2,3,4)/q+2/p-2 |
| InChIKey | VTYYLEPIZMXCLO-UHFFFAOYSA-L |
| SMILES | [Ca+2].[O-]C(=O)[O-] |
| CAS Datenbank | 1317-65-3(CAS DataBase Reference) |
| EPA chemische Informationen | Limestone (1317-65-3) |
Sicherheit & Vorschriften
| GHS-Einstufung | Not ClassifiedAggregated GHS information provided per 3535 reports by companies from 27 notifications to the ECHA C&L Inventory.This chemical does not meet GHS hazard criteria for 100% (12 of 12) of all reports.Aggregated GHS information provided per 12 reports by companies from 1 notifications to the ECHA C&L Inventory. |
|---|---|
| Regulatorische Informationen | Chemical: Carbonic acid, calcium salt (1:1)Regulation (EC) No 1107/2009 (amended)Carbonic acid calcium salt (1:1) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Carbonic acid calcium salt (1:1) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)2002/20762008/127, Reg. (EU) 2017/195, Reg. (EU) 2020/1160, Reg. (EU) 2021/1448, Reg. (EU) 2021/745, Reg. (EU) No 369/2012, Reg. (EU) No 540/2011Status: Active Update: 28-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/16050 |
| Weitere Sicherheitsinformationen | IMAP assessments - Carbonic acid, calcium salt (1:1): Human health tier I assessment |
| Brandgefahren | Not combustible. |
| Brandpotenzial | Not combustible. |
| Gesundheitsgefahren | Excerpt from NIOSH Pocket Guide for Calcium carbonate: |
| Gefahrenübersicht | No adverse effects associated with exposure to calcium carbonate have been identified. [Harber, p. 354] Important natural forms are calcite and aragonite, which may be contaminated with magnesium, iron, chromium, manganese, sulfur, zinc, lead, and sometimes crystalline silica. Chemically produced calcium carbonate is 98-99% pure. [CHEMINFO] |
| FDA-Anforderungen | Certification of this color additive when used as a color additive in drugs is not necessary for the protection of the public health, and therefore batches thereof are exempt from the certification pursuant to section 721(c) of the act.An ingredient whose use in food or food packaging is subject to a prior sanction or approval within the meaning of section 201(s)(4) of the Act is exempt from classification as a food additive. ... Substances classified as stabilizers, when migrating from food-packaging material shall include: ... calcium carbonate. |
Anwendungen & Verwendung
Beschreibung
Calcite is one of the most common minerals on the face of the earth, comprising about 4% by weight of the earth’s crust and is formed in many different geological environments. Calcite can form rocks of considerable mass and constitutes a significant part of all three major rock classification types. It forms oolitic, fossiliferous and massive limestones in sedimentary environments and even serves as the internal cement for many sandstones and shales.Calcite is even a major component in the igneous rock called carbonatite and forms the major portion of many hydrothermal veins. Not necessarily a variety of calcite, cave formations are certainly a unique aspect of calcite’s story.
Verwenden
Source of lime; neutralizing agent, filler, and extender in rubber, plastics, paints; opacifying agent in paper; fortification of bread; putty; tooth pow- ders; antacid; whitewash; Portland cement; sulfur dioxide removal from stack gases; metallurgical flux; analytical chemistry; carbon dioxide gener- ation (laboratory).
Herstellung & Synthese
synthetische
The calcite present is derived mostly from the remains of organisms such as clams, brachiopods, bryozoa, crinoids and corals. These animals live on the bottom of the sea and when they die their shells accumulate into piles of shelly debris. This debris can then form beds of limestone. Some limestones may have been derived from nonbiogenic calcite formation.