1000ug/mL HAFNIUM 125mL

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SKU: CGHF1-125ML

1000ug/mL HAFNIUM 125mL

Hafnium Expanded View

Hafnium

Location:  Group 4, Period 6
Atomic Weight:  178.49
Coordination Number:  6, 7, 8
Chemical Form in Solution:  Hf(F)6-2
(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, HF, H2SO4 (very hot), and HNO3. Avoid H3PO4and 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 but precipitation with phosphate, oxalate, and tartrate with a tendency to hydrolyze forming the hydrated oxide in all dilute acids except HF.

Stability:  2-100 ppb levels stable alone or mixed with all other metals that are at comparable levels as the Hf(F)6-2 + Hf(OH)4F2-2 for months in 1% HNO3 / LDPE container. 1-10,000 ppm single element solutions as the Hf(F)6-2 chemically stable for years in 2-5% HNO3 / trace HF in an LDPE container.

Hf Containing Samples (Preparation & Solution):  Metal (soluble in H2O / HF / HNO3); Oxide - unlike TiO2 the HfO2 is best fused in one of the following ways (Na2O2 in Ni0, Na2CO3 in Pt0 or Borax in Pt0); Organic Matrices (dry ash at 450°C in Pt0 and dissolve by fusing with Na2CO3 and dissolving in HF / HNO3 / H2O).

Atomic Spectroscopic Information:
Technique / Line Estimated D.L.* Order Type Interferences
ICP-OES 277.336 nm 0.02/.002 µg/mL 1 ion Nb, Cr, U
ICP-OES 273.876 nm 0.02/.002 µg/mL 1 ion U, Mo
ICP-OES 264.141 nm 0.02/.002 µg/mL 1 ion Ba, Th, U
ICP-MS 177 amu 4 ppt n/a M+ 161Dy16O**
*ICP-OES D.L.'s are given as radial / axial view
**Fewer potential interferences on the 177 vs 180 line

Hafnium (Hf) Standards In Our Store

Product Specifications

 
  • Part #:

    CGHF1-125ML

  • Description:

    1000ug/mL HAFNIUM 125mL

  • Matrix:

    tr Nitric Acid /tr Hydrofluoric Acid

  • Starting Material:

    HfO2

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    • Analyte
    • µg/mL
    • Hf
    • 1000
 
Documentation:
 

Associated Certifications: ISO 17034 | ISO 17025

 

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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

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