It's widely used in lithium bromide, Li-ion battery, electrolytic aluminum, glass-ceramics, lithium metal etc.

Detailed specs:

1) Li2CO3: ≥ 99.0%

2) SO4: ≤ 0.35%

3) CaO: ≤ 0.005%

4) H2O: ≤ 0.60%

5) Fe2O3: ≤ 0.008%

6) Na2O: ≤ 0.20%

7) Cl: ≤ 0.005%

8) Insoluble matters in HCL: ≤ 0.015%