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Calcium carbonate

CAS:
471-34-1
MF:
CCaO3
MW:
100.0869

Properties

Melting point:
825 °C
Boiling point:
800 °C
Density 
2.93 g/mL at 25 °C (lit.)
refractive index 
1.6583
storage temp. 
Store at +5°C to +30°C.
solubility 
5 M HCl: 0.1 M at 20 °C, clear, colorless
form 
random crystals
Specific Gravity
2.93
color 
White-beige to slightly beige-gray
Odor
Odorless
PH Range
8
PH
9.91(1 mM solution);9.91(10 mM solution);9.91(100 mM solution);
Water Solubility 
Insoluble
λmax
λ: 260 nm Amax: ≤0.09
λ: 280 nm Amax: ≤0.06
Merck 
14,1657
BRN 
8008338
Solubility Product Constant (Ksp)
pKsp: 8.54
Stability:
Stable. Incompatible with acids, fluorine, ammonium salts, alum.
InChIKey
VTYYLEPIZMXCLO-UHFFFAOYSA-L

Safety Information

Hazard Codes 
Xi
Risk Statements 
37/38-41-36/38-36
Safety Statements 
26-36/37/39-37/39-37
WGK Germany 
-
RTECS 
FF9335000
TSCA 
Yes
HS Code 
28365000
Toxicity
LD50 orally in Rabbit: 6450 mg/kg LD50 dermal Rat > 2000 mg/kg

Use

Humans primarily use calcium carbonate as a primary source of calcium to combat osteoporosis. Most limestone is used today as construction material. In addition to its use as a construction material, calcium carbonate is also used in numerous industrial processes. Two forms commonly used are ground calcium carbonate (gcc) and precipitated calcium carbonate (pcc). Calcium carbonate is used widely in papermaking as filler and coating pigment to whiten paper. Calcium carbonate is used in place of more expensive optical brightening agents in paper and as a fill to replace more expensive wood pulp fiber; it also helps control the pH in an alkaline range. The second most common industrial use of calcium carbonate (after papermaking) representing the largest use of gcc is in the production of plastics. It is used in the production of polyvinyl chloride (PVC), thermoset polyesters, and polyolefins. Calcium carbonate can be used to replace resins that are more expensive. Similar to its use in the paper industry, it is used as an optical brightener and whitening agent. It also is used to increase strength and absorb heat during exothermic processes. Calcium carbonate is also used in the production of polyethylene and polypropylene. It is an additive to paints and coatings for several purposes including particle size distribution, opacity control, weather resistance, pH control, and anticorrosion. Calcium carbonate is used to buff er acidic soils. Calcium carbonate has also been used to mitigate the effects of acid precipitation on water bodies. Another environmental application of calcium carbonate is for gas desulfurization in scrubbers used to reduce sulfur emissions from air pollution sources.

582 supplier list of "Calcium carbonate"

  • Product Name:Calcium carbonate (600 mesh)
  • Products Intro:Purity: 99% | Package: 25KG;5KG;1KG
  • Company Type: Trader
  • Country/Region: CHINA
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  • Products Intro:Purity: As coa | Package: As request | CustNote: 471-34-1
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  • Country/Region: CHINA
  • Product Name:Calcium carbonate
  • Products Intro:Purity: 99.9% | Package: 1KG;5USD
  • Company Type: Reagent
  • Country/Region: CHINA

    $100.00/ 1KG

  • Product Name:Calcium carbonate
  • Products Intro:Purity: 99% | Package: 1KG;100USD
  • Company Type: Trader
  • Country/Region: CHINA
  • Main Products: phenactin,4-Methylpropiophenone 5337-93-9,288573-56-8,443998-65-0

    $10.00/ 1PCS

  • Product Name:Tianci Talc
  • Products Intro:Purity: 99% | Package: 1PCS;10USD
  • Company Type: Trader
  • Country/Region: CHINA
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  • Product Name:Calcium carbonate
  • Company Type: Service provider
  • Country/Region: CHINA
  • Main Products: UDDA
  • Product Name:Tianci Talc
  • Products Intro:Purity: 0.99 | Package: 5KG;1KG/aluminum foil package; 25kg/drum | CustNote: Paypal,credit card,western union,bank transfer
  • Company Type: Trader
  • Country/Region: CHINA
  • Main Products: hgh191aa,peptides,sarms
  • Product Name:Calcium carbonate
  • Products Intro:Purity: 0.98 | Package: 1kg,2kg,5kg,10kg,25kg
  • Company Type: Trader
  • Country/Region: CHINA
  • Product Name:Calcium Carbonate
  • Products Intro:Purity: 99% | Package: 1kg
  • Company Type: Trader
  • Country/Region: CHINA

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