本品系胭脂紅(C22H20O13)的鋁鈣色淀。溶于硼砂液，還溶于堿金屬的氫氧化物或碳酸鹽類(lèi)成深紅色溶液，部分溶于熱水，幾乎不溶于冷水或稀酸。

制備胭脂紅酸，胚胎學(xué)中作整體染色，細(xì)胞核染色，滴定氨溶液指示劑，顯微分析，熒光分析，染料、食物的著色等。

This product is an aluminum-calcium lake of carmine (C22H20O13). Soluble in borax solution, also soluble in alkali metal hydroxides or carbonates to form deep red solution, partially soluble in hot water, almost insoluble in cold water or dilute acid.

Preparation of carminic acid, integral staining, nuclear staining, titration of ammonia solution indicator, microscopic analysis, fluorescence analysis, coloring of dyes and foods, etc.