1000ug/mL NIOBIUM, Ta FREE 125

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1000ug/mL NIOBIUM, Ta FREE 125

Niobium Expanded View


Location:  Group 5, Period 5
Atomic Weight:  92.9064
Coordination Number:  6, 7, 8
Chemical Form in Solution:  NbOF5-2
(coordination numbers in green are observed less frequently)

Storage & Handling:  Keep tightly sealed when not in use. Store and use at 20 ± 4°C. Do not pipet from container. Do not return portions removed for pipetting to container.

Chemical Compatibility:  Soluble in concentrated HCl and dilute HF / HNO3. Avoid neutral to basic media. Unstable at ppm levels with metals that would pull F- away (i.e. - Do not mix with Alkaline or Rare Earths or high levels of transition elements unless they are fluorinated). Stable with most inorganic anions provided it is in the chemical form shown above.

Stability:  2-100 ppb levels stable (alone or mixed with all other metals that are at comparable levels) as the NbOF5-2 for 5 months in 1% HNO3 / LDPE container. 1-10,000 ppm single element solutions as the NbOF5-2 chemically stable for years in 2-5% HNO3 / trace HF in an LDPE container.

Nb Containing Samples (Preparation & Solution):  Metal (soluble in HF / HNO3); Oxide - very resistant to all acids including HF (fusion with K2S2O7, KOH, or Na2CO3); Organic Matrices (dry ash at 450°C in Pt0 and dissolve by fusing with Na2CO3 or K2S2O7).

Atomic Spectroscopic Information:
Technique / Line Estimated D.L.* Order Type Interferences
ICP-OES 309.418 nm 0.04/.002 µg/mL 1 ion  
ICP-OES 269.706 nm 0.07/.002 µg/mL 1 ion Th, Co
ICP-OES 295.088 nm 0.08/.001 µg/mL 1 ion Hf, U
ICP-MS 93 amu

1 ppt



77Se16O, 74Se16O, [186X+2 (where X = W, Os)]
*ICP-OES D.L.'s are given as radial / axial view

Niobium (Nb) Standards In Our Store

Product Specifications

  • Part #:


  • Description:

    1000ug/mL NIOBIUM, Ta FREE 125mL

  • Matrix:

    1.5% v/v HNO3/ tr HF

  • Starting Material:


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Associated Certifications: ISO 17034 | ISO 17025


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Traceable to NIST SRMs
Produced under ISO 17025
Produced under ISO 17034
Assayed by validated wet chemical procedures
Assayed by validated ICP-OES procedures
Trace metallic impurities determined by ICP and ICP-MS

And up to 3 YEARS SHELF LIFE with TCT packaging