Therefore, the water turns the blue cobalt chloride Peper into the pink. Such distinct change in colour makes cobalt chloride useful as the humidity indicator in weather instruments. We provide 3 series of product to satisfy all customer needs: Cobalt Chloride Blue to Red, Cobalt Free Brown to Blue, Cobalt Chloride Free Blue to Red. An environmentally safe alternative to the traditional blue indicating silica gel, which contains cobalt chloride, the Orange Indicating Silica Gel turns. Silica gel 3-5 mm with indicator (with cobalt chloride) for analysis, ACS Content: 1000 g Physical Data: solid Quality: for analysis, ACS Specification. The hexahydrate complex of cobalt chloride is pink in colour. The reaction for the formation of hexahydrate as follows:ĬoCl2.2H2O(Purple)+ H2O→CoCl2.6 H2O(Pink) This time the four more water molecules surround the cobalt resulting in the formation of hexahydrate cobalt chloride. Envirogel indicates an orange/yellow colour when. Silica Gel Blue semi-transparent glassy substance containing an indicator as Cobalt Chloride a heavy metal salt. The reaction for the hydration of cobalt chloride is represented as follows:Īs the crystal is further exposed to the water the crystal structure changes. Envirogel Envirogel desiccant is the latest alternative to blue (cobalt chloride) indicating silica gel. On exposure to the water or the water vapours, the cobalt chloride absorbs the water molecule.įirst, the two water molecules surround each cobalt atom and result in the formation of dehydrate. National Library of Medicine (part of the National Institutes of Health) deems swallowing. As the humidity increases the cobalt chloride changes the colour from sky blue to the purple and then to the pink. Also, a few varieties of silica gel come coated with cobalt chloride, which is considered toxic. Color change of silica gel: Due to presence of CoCl2,Ĭobalt chloride changes the colour in response to the humidity. Harga: Silica Gel Blue 1Kg New Packing With Double KlipRp53.835: Harga: Silica Gel Blue Biru Curah 1KGRp47.000: Harga: Silica Gel Blue 1Kg / Gel Silika Biru 1 KgRp50.000: Harga: Silica Gel Blue 1KG Gel Silika Biru 1KG Silica Gel ImportRp48.200: Harga: silica gel blue 1 kg (boleh pilih 1 2 atau 5 gr per sachet)Rp89.
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