Bridelia ferruginea B dye was extracted from the bark of the tree using aqueous extraction method. Extracted dye was used to dye cellulosic (cotton) fabric in presence of 5% calcium chloride (CaCl2) or 5% alum (KAl(SO4)2·12H2O) of weight of fabric (o.w.f) as mordant. Fabric dyed without mordant was lighter in hue than metal ion mordanted dyed fabrics. The fabrics dyed in presence of calcium chloride as mordant are of deeper hue than those dyed with alum as mordant. Hence, their dye-uptake and color strength (K/S) are in the same order. K/S value of fabric dyed with alum is 43.71% higher than that without mordant and fabric dyed with calcium chloride has K/S value 51.09% higher than dyed with alum as mordant. CIEL*a*b* coordinate indicator and color space quadrant showed that those dyed fabrics without mordant and with alum as mordant are closer to yellow than red color. Those cellulosic fabrics dyed with calcium chloride as mordant are closer to red than yellow color as confirmed in colour space quadrant. Pre-mordanted dyed fabrics are of deeper color than post-mordanted dyed fabrics than meta-mordanted dyed fabrics than unmordant dyed fabric. Fastness properties of B. ferruginea B dyed cellulosic fabrics ranged from good (3) to excellent (5).

中文翻译：

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mordanted Bridelia ferruginea B染色纤维素织物的色牢度性能

使用水浸提取方法从树皮中提取铁丹参B染料。提取的染料用于在媒质重量为owf的5％氯化钙（CaCl2）或5％明矾（KAl（SO4）2·12H2O）存在的情况下对纤维素（棉）织物进行染色。无媒染剂染色的织物的色相比金属离子媒染的织物浅。在以氯化钙为媒染剂的情况下染色的织物比以明矾为媒染剂的织物更深。因此，它们的染料吸收和色强度（K / S）是相同的顺序。用明矾染的织物的K / S值比不使用媒染剂的织物的K / S值高43.71％，用氯化钙染色的织物比用矾土染剂的织物的K / S值高51.09％。CIEL * a * b *坐标指示器和色彩空间象限显示，那些没有媒染剂而以明矾为媒染剂的染色织物比红色更接近黄色。如颜色空间象限所证实的，那些用氯化钙染成媒染剂的纤维素织物比黄色更接近红色。媒染前的染色织物比媒染后的染色织物比间媒染色的织物比无媒染的织物更深。B. ferruginea B染色的纤维素织物的坚牢度范围从良好（3）到优异（5）。