31208
碳酸钙
puriss. p.a., ≥99%
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关于此项目
线性分子式:
CaCO3
化学文摘社编号:
分子量:
100.09
EC Number:
207-439-9
UNSPSC Code:
12352300
PubChem Substance ID:
Beilstein/REAXYS Number:
8008338
MDL number:
InChI key
VTYYLEPIZMXCLO-UHFFFAOYSA-L
InChI
1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
SMILES string
[Ca++].[O-]C([O-])=O
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
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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.
Application
Calcium carbonate was used in the synthesis of hybrids of nanocrystalline cellulose (NCC) and amorphous calcium carbonate (ACC) nanoparticles.
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.
存储类别
13 - Non Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
法规信息
新产品
此项目有
Eagleson M.
Concise Encyclopedia Chemistry, 162-162 (1994)
Denis Gebauer et al.
Nanoscale, 3(9), 3563-3566 (2011-08-19)
Nanocellulose hybrids are promising candidates for biodegradable multifunctional materials. Hybrids of nanocrystalline cellulose (NCC) and amorphous calcium carbonate (ACC) nanoparticles were obtained through a facile chemical approach over a wide range of compositions. Controlling the interactions between NCC and ACC
M Azizur Rahman et al.
PloS one, 8(3), e58781-e58781 (2013-03-26)
An organic matrix consisting of a protein-polysaccharide complex is generally accepted as an important medium for the calcification process. While the role this "calcified organic matrix" plays in the calcification process has long been appreciated, the complex mixture of proteins
Jane A Cauley et al.
Journal of women's health (2002), 22(11), 915-929 (2013-10-18)
Clinical outcomes of the Women's Health Initiative (WHI) calcium plus vitamin D supplementation trial have been reported during 7.0 years of active intervention. We now report outcomes 4.9 years after the intervention stopped and cumulative findings. Postmenopausal women (N=36,282) were
Munlika Bootklad et al.
Carbohydrate polymers, 97(2), 315-320 (2013-08-06)
Thermoplastic starch (TPS) was prepared using compression molding and chicken eggshell was used as a filler. The effect of the eggshell powder (EP) on the properties of TPS was compared with the effect of commercial calcium carbonate (CC). The organic
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