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Calcium carbonate

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Calcium carbonate

EINECS 207-439-9
CAS No. 471-34-1 Density 2.93 g/mL at 25 °C(lit.)
Solubility insoluble in water Melting Point 825 °C
Formula CaCO3 Boiling Point 333.6oC at 760mmHg
Molecular Weight 100.09 Flash Point 197oC
Transport Information Appearance White powder
Safety 26-36/37/39-37/39 Risk Codes 37/38-41-36/38-36
Molecular Structure Molecular Structure of 471-34-1 (Calcium carbonate) Hazard Symbols IrritantXi

Ultrapaque;Marblewhite 325;MC 1 (carbonate);AFF 95;FMT 70;Tama Pearl TPK;carbonic acid calcium salt (1:1);BFK 200;Stanwhite 500;Enifant 15;Akadama;N 43 (carbonate);Mikhart 2;NN 200;Precpitated calcium carbonate (JP14);Albacar LO;Nitorex 90;Precpitated calcium carbonate;Hakuenka T-DD;Super 2000;Slite 1200;KK 12;SL 300;Limestone,uses;NCC 2310;Eskalon 2000;Supermite;Nitorex 23P;Pulpro 3;P-Lite 700;KS 1300;Calseeds P;TNC-C 120;Viscolite U;Purecal O;NCC-P;Socal;NS 2300;TP 222;PO 320B10;Softon 1500;TR 325;Calofil A 4;Supercoat;MSK-V;GS 3;TM 1 (filler);SL 700;Superfine heavy calcium carbonate;Blue Iron Oxide;calcium carbonate (Luminescent Grade);CALCIUM CARBONATED;Calcium Carbonate, Powder, Reagent;Stavigot 15A;Calcium carbonate, light, food;Calcium Carbonate, Anhydrous;Duramite;Snowdrop (Galanthus)Snowflake;Clarcal 9125;CPL 4106;Marblend;SST 40;Calopake F;LW 3000;Whiton;Brilliant 1500;Kredafil RM 55;BL 50 (antacid);Garolite SA;FL 2029;MC-S 5;Toyofine TF-X;Iikaru 100;Saxolith 2HE;Brilliant S 15;Purecal U;Dacote;Girulite 40;Whiscal;Milcarb;Super 1500;BF 200;T 130-2500;Albaglos;Hydrocurve K 9;Eskalon 1500;Microna S 93;Winnofil SP;C 50 (carbonate);NS 80 (carbonate);TNC-C 60;Hakuenka PZ;High Purity Calcium Carbonate CS;Inducarb 0000;C.I. Pigment White 18;NS 3000;Tama Pearl TP 262;Albafil;MD 2 (carbonate);Eskalon 600;N 2 (filler);Pficarbo S;ZG 301;Calofort S;Cal-light AS;MSK-PO;CaCO3;Vigot 10;KS 500;LW 600;Tama Pearl 222H;Microna S 90HB;Clefnon;OA-A 1102;Sturcal L;Nitorex 80;SM 14B;MC 5 (filler);TP 121SDP;Vicron;Albaglos SF;Kemipuron A;CPL 404;Cube 70AS;Tama Pearl TP 121;Super SSS;Pficarbo H;Softon H;Chemcarb;RX 2557;Polcarb;SX 1000;Softon 2600;K 250;Multiflex MM;Cal-light A 7;YS 34;NN 500;Kalfain 500;Tancal 200;Hakuenka R 06;Atomistic simulationAtomite;PS 100 (carbonate);Microna S 80B;Os-Cal;Carusis P;PV 4 (carbonate);MC-T;Super 2300;KS 1500;Winnofil SPT;Tama Pearl HGA;Calcite (Ca(CO3)),uses;MSK-P;Inducarb 500;KC 30A;Snowlite SS;KK 13;HC 90;Camel-Carb;CS-D;Atomite SSA 2114;Hakuenka DD;Tama Pearl FCC;Inteq B 641;NZ;Multiflex SC;RX 2559;Microna 7;Albacar;Homocal D;Hakuenka PX;Nanox 30;Softon 2200;Cal-sup;Lighton 22S;Super 5S;Shipron A;CCR;Microrn 200;NS 800;Opacarb S;Brilliant 15;Super 3S;Snowcal 60;AX 363;NA 600;Microcal spa C 100;FilmLink 600;ACE 25;Kredafil 150 Extra;G 100 (carbonate);GPR 325;Newlight LL;SL 2200;SS 30 (carbonate);SL 1000 (carbonate);BF 2000;MSK-C;Super SS;Neolite SP;Snowflake White;Calseeds PL;Eskalon 100M;M 300 (antiaggregant);Calcitex 902;Winnofil SPM;ACE 35;Super S (carbonate);Softon 1000;RL 06083;NCC 1010;Super-Pflex;P-Lite 500;WO 30F;Caltrate;Kansui 50;Calopake PC;Calpin Y;Setacarb HG;Kalfain 200M;BKS 5;Egri M 5;Lighton 200B10;Gama-Sperse 80;


Calcium carbonate Standards and Recommendations

OSHA PEL: Total Dust: 15 mg/m3; Respirable Fraction: 5 mg/m3
ACGIH TLV: TWA (nuisance particulate) 10 mg/m3 of total dust (when toxic impurities are not present, e.g., quartz <1%)

Calcium carbonate Specification

Calcium carbonate, with the cas register number 471-34-1, also can be called Carbonic acid calcium salt ; Marble ; and Limestone. Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks in all parts of the world, and is the main component of shells of marine organisms, snails, coal balls, pearls, and eggshells. Calcium carbonate is the active ingredient in agricultural lime, and is usually the principal cause of hard water.

Physical properties about Calcium carbonate are: (1)#H bond acceptors:3 ; (2)#H bond donors: 2; (3)Molecular Weight: 100.087 g/mol; (4)EINECS: 207-439-9; (5)Flash Point: 169.8 °C; (6)Enthalpy of Vaporization: 63.37 kJ/mol; (7)Boiling Point: 333.6 °C at 760 mmHg; (8)Density: 2.93 g/mL at 25 °C(lit.); (9)Vapour Pressure: 0.00856 mmHg at 25 °C; (10)Melting point: 825 °C

Preparation of Calcium carbonate: The vast majority of calcium carbonate used in industry is extracted by mining or quarrying. Pure calcium carbonate (e.g. for food or pharmaceutical use), can be produced from a pure quarried source (usually marble).Alternatively, calcium carbonate is prepared from calcium oxide. Water is added to give calcium hydroxide, and carbon dioxide is passed through this solution to precipitate the desired calcium carbonate, referred to in the industry as precipitated calcium carbonate (PCC)
CaCO3 → CaO + CO2
CaO + H2O → Ca(OH)2
Ca(OH)2 + CO2 → CaCO3 + H2O

Uses of Calcium carbonate: Calcium carbonate is widely used in both its pure and its impure states. As marble chips, it is sold in many sizes as a filler for artificial stone, for the neutralization of acids, and for chicken grit. It is used to produce viscous solutions or dispersions, to impart body, improve consistency, or stabilize emulsions, including suspending and bodying agents, setting agents, jellying agents, bulking agents, stabilizers and thickeners.

When you are using this chemical, please be cautious about it as the following:
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice;
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You can still convert the following datas into molecular structure:

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 oral 6450mg/kg (6450mg/kg)   "Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972Vol. -, Pg. 267, 1972.

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