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Sigma-Aldrich

Chelex® 100 sodium form

200-400 mesh particle size

Synonym(s):

crosslinked polystyrene-iminodiacetate ion exchange resin

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About This Item

CAS Number:
11139-85-8
MDL number:
MFCD00163980
UNSPSC Code:
23151817
NACRES:
NA.22

product line

Chelex®

Quality Level

200

form

powder or chunks

reaction suitability

reaction type: solution phase peptide synthesis

loss

~80% loss on drying, 110°C

matrix

polystyrene/DVB

matrix active group

paired iminodiacetate groups

particle size

200-400 mesh

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General description

Chelex®100 sodium form is a chelating resin made of a styrene and divinylbenzene copolymer. It has a pair of iminodiacetate ions that chelate polyvalent metal ions, shows greater metal ion selectivity, and has a stronger binding force.

Application

Chelex®100 sodium form is commonly used:
  • As an ion exchange resin, in wastewater treatment due to its high affinity for metal ions
  • For the extraction and purification of DNA
  • As adsorbent in protein purification
  • In determination of trace elements in marine water

Legal Information

Chelex is a registered trademark of Bio-Rad Laboratories, Inc.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000384507
0000355455
0000384507
0000355455
0000318183

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Some examples of the use of amphoteric ion-exchange resins for inorganic separations.
Samczynski Z and Dybczynski R.
Journal of Chromatography A, 789(1), 157-167 (1997)
Ion-exchange of nickel by iminodiacetic acid chelating resin Chelex 100
H Leinonen, et al.
Reactive and Functional Polymers, 43, 1-6 (2000)
Henrik H De Fine Licht et al.
BMC evolutionary biology, 14, 244-244 (2014-12-05)
Cooperative benefits of mutualistic interactions are affected by genetic variation among the interacting partners, which may have consequences for interaction-specificities across guilds of sympatric species with similar mutualistic life histories. The gardens of fungus-growing (attine) ants produce carbohydrate active enzymes
Standing wave design of carousel ion-exchange processes for the removal of zinc ions from a protein mixture
S Mun, et al.
Industrial & Engineering Chemistry Research, 45, 316-329 (2006)
One-step purification/extraction method to access glyphosate, glufosinate, and their metabolites in natural waters
CT Vu, et al.
Journal of Chromatography A, 1649, 462188-462188 (2021)
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