Potassium2-Naphthol-8-sulfonate（30252-40-5）

Saffron Saffron, also known as saffron and saffron. The Uighur medicine is Zaifar, and the alias is Feiran and Kukumu. It is the upper part and stigma of the style of Crocussativus L., a plant of Iridaceae. China has a small number of experimental cultivation in Beijing, Shanghai, Shandong, Zhejiang, Sichuan, Xinjiang, and other countries, including Spain, Iran, Italy, Germany, France, Greece, Austria, the former Soviet Union and Japan. The stigma of wet saffron is reddish brown, with oily luster, slender and linear, about 3C chemicalbookcm long, narrow at the base, gradually widening towards the top, with a short crack in the inner side, and irregular toothed at the top edge. Stigmas often exist alone, sometimes three stigmas are associated with a short style. The style is orange-yellow. When immersed in water, the stigma will expand and expand, and take on the shape of a long trumpet, and the water will be dyed yellow. It tastes sweet and bitter. It is better to be moist and shiny, red and less yellow. The dry crocus is curved and filiform, dark reddish brown, with yellowish brown parts. The quality is light, lusterless and oily, and the rest is the same as wet crocus.