SKU : GC307002-25g
Categories : Biochemicals ,  1. Chemical and Reagents ,  Buffers ,  Servicebio , 
Brand : Servicebio
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Product Information
Product Name | Cat. No. | Spec. |
Crystal Violet | GC307002-25g | 25 g |
Introduction
Crystal Violet, also known as Methylrosanilnium Chloride Solution, gentian violet, is a triphenylmethane dye which commonly is used in Gram stains for bacterial classification, or for cellular or histological staining. The mechanism of crystal violet staining is that the crystal violet binds to carbohydrate molecules such as DNA or peptidoglycan (one of the important components of bacterial cell walls), and then stain it a deep purple color. Gram staining method using crystal violet and Safranin O stain to distinguish G+ bacteria and G- bacteria staining principle is that the former cell wall contains a thick peptidoglycan layer, crystal violet and iodine complex can be retained in the cell and will not be decolorized; the latter contains only a very thin layer of peptidoglycan, and the complex of crystal violet and iodine is decolorized away, thus being reddened by Safranin O.In addition, for the property of crystal violet is binding to nucleic acids and stain cell nuclei, crystal violet is also commonly used for cell viability or cytotoxicity assays, such as colony formation, plaque assay, cell migration and other experiments.
Basic Attributes
Name | Crystal Violet |
Synonym | Methyl violet 10B; Methyl violet; Hexamethyl violet; Hexamethylrosaniline hydrochloride; Base violet 3; Methyl violet 10B; Hexamethylrosaniline chloride; Basic violet 3 |
CAS | 548-62-9 |
Molecular formula | C25H30N3Cl |
Molecular mass | 407.98 |
Purity | Biotechnology |
Appearance (character) | Green or dark green crystalline powder |
Storage conditions | Room temperature |
Unit | Bottle |
Spec. | 25 g |
Pubchem CID | 11057 |
MDL No. | MFCD00011750 |
Related categories | Biological pigment |
Solubility | 1 mg/mL in water |
Valid | 48 months |
Molecular Structural

Instructions
The usage and dosage of biochemical reagents are mainly determined according to the customer's experimental purpose and the experimental methods in existing literature or books. The following uses are for reference only.
1. In Gram staining experiments, this product can be used for the preparation of ammonium oxalate crystal violet dye solution, used to identify Gram-positive bacteria (G+) and Gram-negative bacteria (G-). The general preparation method of Ammonium Oxalate Crystalline Violet Staining Solution is as follows: Crystalline Violet Ethanol Saturated Solution (2g of Crystal Violet dissolved in 20mL of 95% ethanol) 20mL plus 1% Ammonium Oxalate Aqueous Solution 80mL, mixing and filtering can be done after 24h. When staining, add ammonium oxalate crystal violet staining solution to the tissue sections for 10-30s, wash with distilled water until the water is colorless, add iodine solution staining for 1min, wash with water, shake dry, differentiate, wash with water, shake dry, and then stain with Safranin O staining solution for 1s, wash with water, and then examine with microscope.
2. Crystal violet assay can be used to detect the biological activity of TNF, the use of the dye crystal violet can make the living cells stained, and then use the decolorizing solution to remove the dye, the OD value can be measured, can reflect the survival status of the cells or the killing rate of TNF on the L929 cells, the calculation of the cell death rate, and with the control of the sTNF standard, you can detect the sample to be tested for the unit of sTNF activity. For the assay, 100 μL of 0.25% crystal violet (dissolved in 20% methanol) was added to each well of a 96-well cell culture plate, and the plate was stained for 10 min at room temperature; the supernatant was discarded, and the plate was washed with PBS for 3 times; the plate was air-dried at room temperature, and decolorized by adding sodium citrate buffer, 100 μL/well; the plates were mixed thoroughly, and then the OD values of the wells were measured by an enzyme counter with the detection wavelength of 570 nm and the reference wavelength of 630 nm.
Note:
1. It is recommended to take 1-2 samples for pre-experiment when using this product for the first time.
2. Crystal violet is harmful to human body, please pay attention to proper protection.
3. For your safety and health, please wear a lab coat and disposable gloves for operation.
4. It should not be used when there is extensive damage. It is also not suitable for long-term use.
5. The use of medication in the breast area of breastfeeding women requires the prevention of oral inhalation in infants.
6. When treating oral candidiasis in infants, the infant should be temporarily placed face down after application of the medication to avoid the possibility of the medication being swallowed.
7. Some experimental reports show that systemic absorption of crystal violet can cause cancer in animals, and some countries stipulate that this product can only be used due to local unbroken skin, and internal use is strictly prohibited. However, at present, there is no adverse reaction monitoring report on the carcinogenicity of crystal violet in China.
Security information
WGK | 3 |
Note: The product may be optimized and upgraded. The actual label information shall prevail.
For Research Use Only!