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® Dimercaptotriazine (DMT)
SiliaMetS® DMT (Si-DMT) is the silica bound equivalent of 2,4,6-trimercaptotriazine (trithiocyanuric acid). It is a versatile metal scavenger for a variety of metals including Cd, Co, Ni, Pd, Pt, Rh, and Ru under a wide range of conditions and the preferred metal scavenger for ruthenium catalysts.
TMT has been reported to efficiently remove palladium and heavy metals by precipitation. Unfortunately, its solubility in organic solvents causes problem. SiliaMetS DMT solves this issue and almost all solvents can now be used.
-
SiliaBond® Amine
SiliaBond® Amine (Si-NH2) is an effective scavenger of acid chlorides, sulfonyl chlorides, isocyanates and other electrophiles. Si-NH2 has been shown to be effective metal scavenger and catalyst for Knoevenagel reactions. SiliaBond Amine is also used in chromatography as normal phase sorbent.
-
SiliaMetS® Diamine
SiliaMetS® Diamine (Si-DIA) is a proven scavenger for metals and electrophiles. It scavenges acids, acid chlorides, anhydrides, aldehydes, isocyanates, and chloroformates as well as Pb, Ni, and Cd.
-
SiliaMetS® Triamine
SiliaMetS® Triamine (SiliaMetS WAX-3, Si-TRI) is effective for scavenging metals such as Pb, Co, Ru and Pd. Our screening studies have shown it to be the preferred scavenger for Pb. It can also be used as a scavenger for acid chlorides, isocyanates and other electrophiles.
-
SiliaSep™ Flash Cartridges Amine
Good alternative for normal phase purification of compounds with basic properties, which would normally have to be purified by reversed-phase.
SiliaSep flash amine cartridges offer a superior alternative to the other cartridges available on the market.
-
SiliaSep™ Flash Cartridges Triamine
SiliaSep flash triamine cartridges offer a superior alternative to the other cartridges available on the market.
-
SiliaSep™ Flash Cartridges Diamine
SiliaSep flash diamine cartridges offer a superior alternative to the other cartridges available on the market.
-
SiliaSep™ Flash Cartridges Thiol
SiliaSep flash thiol 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 Dimercaptotriazine (DMT)
SiliaSep flash DMT 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) Amine
SiliaSep™ OT flash cartridges are compatible with FlashMaster instrument.
Good alternative for normal phase purification of compounds with basic properties, which would normally have to be purified by reversed-phase.
-
SiliaSep™ Flash Cartridges - Open Top (OT) Thiol
SiliaSep™ OT flash cartridges are compatible with FlashMaster instrument.
-
SiliaSep™ Flash Cartridges - Biotage™ Compatible (BT) Amine
SiliaSep™ BT flash cartridges are compatible with Biotage i-style compression modules.
Good alternative for normal phase purification of compounds with basic properties, which would normally have to be purified by reversed-phase.
-
SiliaSep™ Flash Cartridges - Büchi™ Compatible (BU) Amine
SiliaSep™ BU flash cartridges are compatible with Büchi Sepacor flash chromatography instrument.
Good alternative for normal phase purification of compounds with basic properties, which would normally have to be purified by reversed-phase.
-
SiliaPrep™ SPE Cartridges Amine (WAX)
SiliaPrep Amine is a weak anion exchanger sorbent used in replacement of SAX for strong anions to avoid irreversible retention. Can also be employed as a metal scavenger and norman phase conditions.
-
SiliaPrep™ SPE Cartridges Amine nec (WAX)
SiliaPrep Amine nec is a weak anion exchanger sorbent used in replacement of SAX for strong anions to avoid irreversible retention. Can also be employed as a metal scavenger and norman phase conditions.
-
SiliaPrep™ SPE Cartridges Diamine
SiliaPrep diamine can be used in replacement of SAX for strong anions to be irreversible retention. Can also be employed as metal scavenger and in normal-phase conditions.
-
SiliaPrep™ SPE Cartridges Diamine nec
SiliaPrep diamine can be used in replacement of SAX for strong anions to be irreversible retention. Can also be employed as metal scavenger and in normal-phase conditions.
-
SiliaPrep™ SPE Cartridges Triamine
SiliaPrep Metal Scavengers will lower the residual metal concentration of various metal complexes to single digit ppm.
-
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 Dimercaptotriazine (DMT)
SiliaPrep Metal Scavengers will lower the residual metal concentration of various metal complexes to single digit ppm.





