Lithium oxalate

Ethylenediamine tetraacetic acid (EDTA) [60-00-4] (Sequestrene), an anticoagulent at 1 mg of the disodium salt per mL blood, complexes with and removes calcium, Ca ", from the blood. Oxalate, citrate, and fluoride ions form insoluble salts with Ca " and chelate calcium from the blood. Salts containing these anticoagulants include lithium oxalate [553-91-3] 1 mg/mL blood sodium oxalate [62-76-0]2 mg/mL blood ... 

These salts decompose [39] to the carbonates in the temperature intervals Li, 811-826 K Na, 737-814 K and K, 754-798 K (from DTA measurements, 5 K min-1). The reaction of lithium oxalate [98] (742— 765 K) obeyed the contracting volume equation [eqn. (7), n = 3] with E = 223 13 kJ mole-1. A marked increase in surface area during the initial stages of decomposition was later followed by extensive sintering. 

Atomic fluorescence spectrometry may be the most sensitive of the four techniques — particularly with laser assistance it has rarely been used with solid or slurry sampling and largely for determinations of metals in biological fluids, urine [105-107] and blood [106-110], Typical examples of solid sampling with this technique include the determination of Li in lithium oxalate [111], Ti in electrothermal atomizers [112], Pb and T1 in nickel-based alloys [113], and Co in high-purity tin [114],... 

Sodium, potassium, ammonium, and lithium oxalates inhibit blood coagulation by forming rather insoluble complexes with calcium ions. Potassium oxalate (K2C2O4 H2O), at a concentration of approximately 1 to 2 g/L of blood, is the most widely used oxalate. At concentrations of greater than 3 g oxalate per liter hemolysis is hkely to occur. 

Decomposition of lithium oxalate [84] (742 to 765 K) yielded the carbonate and was accompanied by an initial large increase in surface area, followed by extensive sintering. The nr-time curve was sigmoid with no induction period and = 223 kJ... 

Solubility op Mixtures of Lithium Oxalate and Oxalic Acid in Water at 25°. 

For example, lithium carbonate must not be used with aiuminum use lithium oxalate instead. 

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