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Merck
CN

22151

Celite® 503

filter aid, treated with sodium carbonate, calcined

Synonym(s):

Diatomaceous earth, flux-calcined

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About This Item

CAS Number:
68855-54-9
NACRES:
SB.54
PubChem Substance ID:
329752274
UNSPSC Code:
11101527
MDL number:
MFCD00132803

Key Documents

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Product Name

Celite® 503, filter aid, treated with sodium carbonate, calcined

InChI

1S/O2Si/c1-3-2

SMILES string

O=[Si]=O

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

form

powder

quality

calcined
treated with sodium carbonate

composition

Al2O3, 4.0%
CaO, 0.5%
Fe2O3, 1.3%
Na2O + K2O, 3.3%
SiO2, 89.6%

loss

~0.2% loss on ignition, 900 °C

particle size

≤85.1 μm (80% (acc. to Cilas))

pH

>8.5 (25 °C, 10% in aq. suspension)

Quality Level

200

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Application

Celite® 503 may be used as filter aid for the purification and isolation of crystalline desoxyribonuclease.

Disclaimer

Not Intended for cGMP Parenteral Pharmaceutical Manufacturing

Legal Information

Celite is a registered trademark of Imerys Minerals California, Inc.

pictograms

Health hazard
GHS08

signalword

Danger

hcodes

H372

Hazard Classifications

STOT RE 1 Inhalation

target_organs

Lungs

Storage Class

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

wgk

WGK 1

flash_point_c

Not applicable

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM7140
BCCL8518
BCCG6060

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M KUNITZ
The Journal of general physiology, 33(4), 349-362 (1950-03-01)
A crystalline enzyme capable of digesting thymus nucleic acid (desoxyribonucleic acid) has been isolated from fresh beef pancreas. The enzyme called "desoxyribonuclease" is a protein of the albumin type. Its molecular weight is about 60,000 and its isoelectric point is
Necla Caliskan et al.
Journal of hazardous materials, 193, 27-36 (2011-07-19)
The removal of Zn(II) ions from aqueous solution was studied using natural and MnO(2) modified diatomite samples at different temperatures. The linear Langmuir, Freundlich and Dubinin-Radushkevich (D-R) adsorption equations were applied to describe the equilibrium isotherms. From the D-R model
Gang Pan et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 13(8), 2205-2212 (2012-01-25)
The formation mechanism of a nanoscale gas state is studied on inorganic clay surfaces modified with hexamethyldisilazane, which show different contact angles in ethanol-water solutions. As the dissolved oxygen becomes oversaturated due to the decrease in ethanol-water ratio, oxygen nanoscale
Xiao-Li Yang et al.
Bioresource technology, 101(23), 9178-9184 (2010-08-06)
This paper examined the effect of diatomite addition on membrane fouling and process performance in an anoxic/oxic submerged membrane bioreactor (A/O MBR). Particle size distribution, molecular weight distribution and microbial activity have been investigated to characterize the sludge mixed liquor.
Maria Aivalioti et al.
Journal of hazardous materials, 207-208, 117-127 (2011-04-16)
The removal of BTEX (benzene, toluene, ethyl-benzene and m-,p-,o-xylenes), MTBE (methyl tertiary butyl ether) and TAME (tertiary amyl methyl ether) from aqueous solutions by raw, thermally, chemically and both chemically and thermally treated diatomite was studied, through batch adsorption experiments.
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