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31208 Sigma-Aldrich

Calcium carbonate

puriss. p.a., ≥99%

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, C-D, Puriss p.a., Calcium Salts,
InChI Key   VTYYLEPIZMXCLO-UHFFFAOYSA-L
grade   puriss. p.a.
assay   ≥99%
form   powder
impurities   ≤0.001% total nitrogen (N)
  ≤0.005% insoluble in hydrochloric acid
solubility   H2O: insoluble
density   2.93 g/mL at 25 °C(lit.)
anion traces   chloride (Cl-): ≤50 mg/kg
  sulfate (SO42-): ≤100 mg/kg
cation traces   Ba: ≤50 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤10 mg/kg
  K: ≤100 mg/kg
  Mg: ≤500 mg/kg
  Na: ≤2000 mg/kg
  Pb: ≤5 mg/kg
  Sr: ≤1000 mg/kg

Description

Other Notes

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.

Application

Calcium carbonate was used in the synthesis of hybrids of nanocrystalline cellulose (NCC) and amorphous calcium carbonate (ACC) nanoparticles.

General description

Calcium carbonate (CaCO3) exists in three anhydrous crystalline polymorphic forms: trigonal(calcite), rhombic aragonite and hexagonal vaterite. On crystallization from water at low temperatures it affords rhombohedral calcium carbonate hexahydrate. On thermal decomposition it affords CaO and CO2. CaCO3 is a mineral found abundantly in mussel shells, exoskeleton of chorals and algae, the carapace of crayfish and lobsters. Its μm sized crystals have industrial importance.

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
nwg
RTECS 
FF9335000

Documents

Certificate of Analysis

Protocols & Articles
Peer-Reviewed Papers
15

References

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