SiliaMetS® Metal Scavenger Selection Table
The following selection table, shown below, helps customers in selecting the most efficient scavenger for a specific metal and application. However, since some parameters may affect the efficiency of the scavenging, we highly recommend performing a preliminary screening experiment using the SiliaMetS Metal Scavenger kit.
SiliCycle also offer a confidential Metal Scavengers Screening Service. Contact us to take advantage of our expertise in metal removal.
Metal to Remove - Selection Table
| SiliaMetS |
Ag
|
Ca
|
Cd
|
Co
|
Cr
|
Cs
|
Cu
|
Fe
|
Hg
|
Ir
|
La
|
Li
|
Mg
|
Ni
|
Os
|
Pb
|
Pd (II)
|
Pd (0)
|
Pt
|
Rh (1)
|
Rh (II)
|
Rh (III)
|
Ru (II)
|
Sc
|
Sn
|
W
|
Zn
|
| Thiol |
★
|
|
|
|
|
|
☆
|
|
★
|
☆
|
|
|
|
|
★
|
☆
|
★
|
★
|
|
☆
|
☆
|
☆
|
★
|
☆
|
☆
|
|
|
| Thiourea |
☆
|
|
|
|
|
|
☆
|
☆
|
|
|
|
|
|
|
☆
|
|
★
|
★
|
|
☆
|
☆
|
☆
|
|
☆
|
☆
|
|
|
| Cysteine |
|
☆
|
★
|
|
☆
|
☆
|
☆
|
★
|
|
★
|
☆
|
|
☆
|
|
★
|
|
☆
|
☆
|
☆
|
☆
|
☆
|
|
★
|
★
|
★
|
|
☆
|
| DMT |
|
|
☆
|
☆
|
|
|
☆
|
☆
|
|
★
|
|
|
|
★
|
★
|
|
★
|
★
|
★
|
★
|
★
|
★
|
★
|
☆
|
|
|
☆
|
| Amine |
|
|
★
|
☆
|
★
|
|
☆
|
☆
|
☆
|
|
|
|
|
|
|
☆
|
☆
|
|
★
|
★
|
★
|
|
|
|
|
☆
|
☆
|
| Diamine |
|
|
☆
|
☆
|
★
|
|
☆
|
☆
|
☆
|
|
|
|
|
☆
|
|
☆
|
★
|
★
|
★
|
|
|
|
☆
|
|
|
☆
|
☆
|
| Triamine |
|
|
|
☆
|
★
|
|
☆
|
☆
|
|
|
|
|
|
☆
|
|
★
|
★
|
★
|
★
|
|
|
|
☆
|
|
|
☆
|
☆
|
| Imidazole |
|
|
★
|
★
|
☆
|
|
★
|
★
|
|
|
|
|
|
★
|
★
|
|
☆
|
☆
|
|
☆
|
☆
|
|
|
|
|
★
|
★
|
| TAAcOH |
|
|
|
★
|
☆
|
☆
|
|
☆
|
|
|
|
|
|
★
|
★
|
|
☆
|
☆
|
|
☆
|
☆
|
|
|
★
|
☆
|
|
|
| TAAcONa |
|
★
|
★
|
|
☆
|
★
|
★
|
★
|
|
★
|
★
|
★
|
★
|
★
|
★
|
|
☆
|
☆
|
☆
|
☆
|
★
|
☆
|
★
|
★
|
☆
|
||
| Click here to have access to catalysts screened and scavenging results. | |||||||||||||||||||||||||||
★ Preferred Scavengers / ☆ Scavenges
-
SiliaMetS® Thiol
SiliaMetS® Thiol (Si-Thiol) is a robust metal scavenger for a variety of metals including Pd, Pt, Cu, Ag and Pb under a wide range of conditions. It has been used in pharmaceutical processes up to the pilot plant scale. It is our most versatile metal scavenger and is the preferred metal scavenger for Pd(II), Cu, Ag, and Hg.
-
SiliaMetS® Thiourea
SiliaMetS® Thiourea (Si-THU) is a versatile metal scavenger for all forms of palladium and is widely used in the pharmaceutical industry. It works particularly well in organic solvents. It can also be used to scavenge Ag, Pt, Ru, Rh and Hg. Once complexed with a transition metal, it has been reported as being an effective catalyst.
-
SiliaMetS® Cysteine
SiliaMetS® Cysteine (Si-Cys) is the silica bound equivalent of the amino acid Cysteine. By attaching the molecule to the backbone via the amino group, the thiol group remains free and accessible for higher metal scavenging efficiency. It is a versatile metal scavenger for a variety of metals including Pd, Sn, Ru, Pt, Cu, Rh, Cd and Sc under a wide range of conditions and the preferred metal scavenger for tin residues.
-
SiliaMetS® Imidazole
SiliaMetS® Imidazole (Si-IMI) is a versatile metal scavenger for a variety of metals including Cd, Co, Cu, Fe, Ni, Pd, and Rh under a wide range of conditions and the preferred metal scavenger for iron catalysts.
SiliaMetS Imidazole can also be used as an amine base in systems that are generally sensitive to basic conditions compared to other SiliaMetS supported bases.
-
SiliaMetS® TAAcOH
SiliaMetS® TAAcOH (SiliaMetS Triaminetetraacetic Acid) is a silica bound metal scavenger for Pd(0), Ni(0) and Cu. It is the supported version of EDTA in its free form. It is an effective scavenger for metals in low or zero oxidation states, which includes many of the most synthetically useful catalysts such as tetrakis-(triphenylphosphine)palladium(0).
-
SiliaMetS® TAAcONa
SiliaMetS® TAAcONa or (or SiliaMetS Triaminetetraacetate, sodium salt) is a silica bound metal scavenger for Pd(II), Ni(II) and Cu. It is the supported version of EDTA in its sodium salt form. It is an effective scavenger for metals in higher oxidation state, 2+ or higher.
-
SiliaSep™ Flash Cartridges Thiol
SiliaSep flash thiol cartridges offer a superior alternative to the other cartridges available on the market.
-
SiliaSep™ Flash Cartridges TAAcOH
SiliaSep flash TAAcOH cartridges offer a superior alternative to the other cartridges available on the market.
-
SiliaSep™ Flash Cartridges TAAcONa
SiliaSep flash TAAcONa cartridges offer a superior alternative to the other cartridges available on the market.
-
SiliaSep™ Flash Cartridges Thiourea
SiliaSep flash thiourea cartridges offer a superior alternative to the other cartridges available on the market.
-
SiliaSep™ Flash Cartridges Cysteine
SiliaSep flash cysteine cartridges offer a superior alternative to the other cartridges available on the market .
-
SiliaSep™ Flash Cartridges - Open Top (OT) Thiol
SiliaSep™ OT flash cartridges are compatible with FlashMaster instrument.
-
SiliaPrep™ SPE Cartridges Thiol
SiliaPrep Metal Scavengers will lower the residual metal concentration of various metal complexes to single digit ppm.
-
SiliaPrep™ SPE Cartridges Thiourea
SiliaPrep Metal Scavengers will lower the residual metal concentration of various metal complexes to single digit ppm.
-
SiliaPrep™ SPE Cartridges TAAcOH
SiliaPrep Metal Scavengers will lower the residual metal concentration of various metal complexes to single digit ppm.
-
SiliaPrep™ SPE Cartridges TAAcONa
SiliaPrep Metal Scavengers will lower the residual metal concentration of variois metal complexes to single digit ppm.





