Salt. Polarised light micrograph of a crystal of sodium chloride,the common salt. This is a white crystalline compound widespread in nature as a solid (rock salt),around margins of salt lakes and in solution (about 3%) in seawater. Other metals are present in the raw material such as calcium,iron and magnesium. These are often removed by precipitation before the salt is sold. Salt is used as a food seasoning and preservative,and as a raw material in industrial processes such as in glass and soap making. Vertical object-size: 1.5mm | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Pasieka, Alfred |
Bildgröße: | 4299 px × 5411 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |