Titanium

Location:  Group 4, Period 4
Atomic Weight:  47.867
Coordination Number:  6
Chemical Form in Solution:  Ti(F)₆^-2

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, H₃PO₄, H₂SO₄, and 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 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) as the Ti(F)₆^-2 for months in 1% HNO₃ / LDPE container. 1-10,000 ppm single element solutions as the Ti(F)₆^-2 chemically stable for years in 2-5% HNO₃ / trace HF in an LDPE container.

Ti Containing Samples (Preparation & Solution):  Metal (soluble in H₂O / HF CAUTION - powder reacts violently); Oxide - low temperature history anatase or rutile (dissolved by heating in 1:1:1 H₂O / HF / H₂SO₄); Oxide - high temperature history {~ 800°C} brookite (fuse in Pt⁰ with K₂S₂O₇); Ores (fuse in Pt⁰ with KF + K₂S₂O₇ - no KF if silica not present); Organic Matrices (dry ash at 450°C in Pt⁰ and dissolve by heating with 1:1:1 H₂O / HF / H₂SO₄ or fuse ash with pyrosulfate if oxide is as plastic pigment and likely in brookite crystalline form).