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Active component: bis(2,4,4-trimethylpentyl) phosphinic acid
CAS No.: 83411-71-6
Molecular Formula: C16H35O2P
Molecular Weight: 290.42 (International Atomic Weight Table,1987)
Structural formula:

Uses:
AD-290 has proven to be an excellent extractant for the separation of cobalt from nickel from both sulfate and chloride media.Since the active component of AD-290 extractant is a phosphinic acid, metals are extracted through a cation exchange mechanism. a variety of other cations can be extracted by AD-290 extractant depending upon the solution pH. As a result, AD-290 can not only be used for the separation of cobalt from nickel, but also for the separation of rare earths, and the extraction of Ga, In, Mo, Ge, Zr, etc.
AD-290 extractant is totally miscible with common aromatic and aliphatic diluents, and is extremely stable to heat, acid and alkalis.
Package: 200 Kg/plastic drum.
Storage: Avoid impact, water and fire. Keep cool, dry and ventilative.
Quality index:

Analysis Item

Quality Index

Bis(2,4,4-trimethylpentyl)phosphinic acid:

≥ 95%

Appearance:

Colorless to lighe amber liquid

Specific weight(24℃):

0.93

Viscosity (25℃):

143cp

        (50℃):

41cp

Solubility (PH = 3.0):

10mg/L

Boiling Point :

>300oC

Freezing point:

-31℃

Flash point:

108℃

Comparison between P204, P507 and AD-290

Extractant

Separation Coefficient (βCo/Ni)

P204

14

P507

280

AD-290

7000



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