龙胆紫
中文同义词: 303盐基青莲粉2B、304;甲基紫5GN;碱性青莲;碱性艳紫3B;碱性紫5BN;碱性紫6BN;盐基结晶紫;盐基品紫;结晶紫
化学性质 暗紫黑粉末。溶于冷水和热水，呈紫色，极易溶于乙醇。于浓硫酸中呈红黄色，稀释后呈暗绿光黄色，然后转变成蓝和紫色。染棉纤维日晒牢度为 1-2 级，染腈纶纤维日晒牢度为 2-3 级。
用途 碱性紫 5BN 可用于蚕丝、棉、麻、腈纶纤维染色，但坚牢度差，所以应用已较少。可制成色淀，用于制造绘画颜料、印台油、油墨、颜色铅笔等，还可用于皮革、纸张、草制品的染色，是医药工业中龙胆紫 (紫药水) 的主要原料。
用途 主要用于制造墨水、复写纸、龙胆紫等，也可用于棉、腈纶、蚕丝、纸张、皮革、草制品的染色，还可制造色淀
用途 用作生物染色剂
用途 可用于染色，也可制成色淀。在医药上，用作皮肤科消毒防腐药。

Crystal Violet
Synonym: PYOKTANIN BLUE;S NO 785;VIOLET 7B;BASIC VIOLET 3;BRILLIANT VIOLET;CALCOZINE VIOLET 6BN;GRAM STAIN NO 1;GRAM STAIN
CAS: 548-62-9
MF: C25H30ClN3
MW: 407.99
EINECS: 208-953-6
Assay: 99%
Appearance: dark Purple powder
Chemical Property: Soluble in cold water and hot water, purple, easily soluble in ethanol. In concentrated sulfuric acid was red and yellow, dark green and yellow diluted, and then transformed into blue and purple. Cotton fiber is 1-2 level dyeing fastness, light fastness was 2-3 grade acrylic fiber.
Usage:
1. Basic violet 5BN and can be used for dyeing silk, cotton, hemp, acrylic fibers, but the fastness is poor, so the application has less. Can be made of color lake, used in the manufacture of paint, stamp pad ink, ink, color pencil, also can be used for dyeing leather, paper, grass products, is Long Danzi pharmaceutical industry (gentian violet) is the main raw material.
2. Mainly used in the manufacture of ink, carbon paper, Long Danzi and so on, can also be used for dyeing cotton, acrylic, silk, paper, leather, grass products, but also can manufacture Lake
3. Used as a biological stain
4. Can be used for dyeing, also can be made into a lake. In medicine, Department of Dermatology, used as antiseptics.
Package: 25kg/drum
Price: USD 23/kg

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