姜黄试纸 90747
产品简介
◆姜黄试纸,德国MN公司的型号是90747;将姜黄溶于乙醇呈黄色溶液。将滤纸浸入,取出晾干即制成黄色的姜黄试纸。定性分析中主要用于鉴定硼酸盐。在酸性条件下,试纸由黄变棕;在用氢氧化钠碱化时,棕色斑点变成蓝色至墨绿色。Turmeric paper;武汉,荆州,十堰
产品详细信息
姜黄试纸
◆硼的应用比较广泛。硼与塑料或铝合金结合,是有效的中子屏蔽材料;硼钢在反应堆中用作控制棒;硼纤维用于制造复合材料等。。
◆硼、硼酸、硼砂都是低毒类蓄积性毒物,每天口服100mg,可引起慢性中毒,肝、肾脏受到损坏,脑和肺出现水肿。
◆将姜黄溶于乙醇呈黄色溶液。将滤纸浸入,取出晾干即制成黄色的姜黄试纸。定性分析中主要用于鉴定硼酸盐。在酸性条件下,试纸由黄变棕;在用氢氧化钠碱化时,棕色斑点变成蓝色至墨绿色。
型号选择:
品名 | 货号 | 测定参数 | 测试范围 | 规格 | 类型 |
姜黄试纸/硼试纸 | 90747 | B | 20mg/l | 200 条/盒, 20*70mm | 定性 |
![姜黄试纸](http://y1.yzimgs.com/ComFolder/414297//201007/90747.gif)
Turmeric paper
Quick and easy determination of boric acid and borates
The test paper allows the quick and easy detection of boric acid and borates. It is impregnated with curcumin, the yellow dye extracted from the roots of Curcuma tinctoria (yellow ginger). The paper is dipped into the sample containing hydrochloric acid (pH 1-2). Afterwards it is allowed to dry. In presence of borate the paper turns orange to red. Dipping into conc. sodium hydroxide causes a green-black color. In the absence of borate, sodium hydroxide leads to a brown-red color.