0215257591
0215257594
0215257595
0215257590
ICNA0215257591EA
36.4
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ICNA0215257591
ICNA0215257594
ICNA0215257595
ICNA0215257590
Sodium chlorure ≥99.0%, poudre cristalline blanche ACS
Sodium chlorure
Soluble in water (357 mg/ml at 25 °C; 384 mg/ml at 100 °C), glycerol (100 mg/ml); very slightly soluble in ethanol. Solubility in water is decreased by HCl; almost insoluble in concentrated HCl. Aqueous solutions has a neutral pH (6,7 to 7,3).
Sodium chloride is used in a wide variety of biochemical applications, including intravenous fluids (normal saline is 0,9% w/v in water), density gradients, a diluent to increase ionic strength in buffers or culture media and in salt-out procedures in the isolation of DNA. It has also been used in high concentrations for preservation of foods since bacteria cannot grow in high salt conditions. A salt-ice mixture in the ratio of approximately 33 g sodium chloride to 100 g ice (at −1 °C) will drop in temperature to as low as −21 °C, depending on the rate of stirring and the size of the ice chunks.