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Vitamin C Anhui BBCA International Co., Ltd. Vitamin C appears as white crystals in a crystalline powder. This product is used as an antioxidant and to help boost the immune system. It has a melting point around 190ºC and a specific rotation of +20.5 º - +21.5 º. It can be used as a nutritional supp...展開 Vitamin C appears as white crystals in a crystalline powder. This product is used as an antioxidant and to help boost the immune system. It has a melting point around 190ºC and a specific rotation of +20.5 º - +21.5 º. It can be used as a nutritional supplement or in drink mixes. 收起