Methylene Blue CAS# 61-73-4
Chemical Name：Methylene Blue
CAS No.:61-73-4
Appearance:Green Liquid
Molecular Formula：C16H18ClN3S
Molecular weight:319.85
Sample: Available
Product Details
Products Description of Methylene Blue CAS# 61-73-4
Industrial-grade methylene blue features a minimum purity of 99%, presenting as an odorless, flammable green crystalline powder. Its key physicochemical properties are as follows: melting point at 190℃ (with decomposition), while boiling point and vapor pressure data remain unreported; relative density is 1.0 g/mL at 20℃. The compound exhibits a solubility of 40 g/L in water (20℃) and is miscible with ethanol. It demonstrates good chemical stability under normal conditions but is incompatible with strong oxidizing agents.
Parameters
Melting point | 190 °C (dec.)(lit.) |
density | 1.0 g/mL at 20 °C |
refractive index | n20/D1.347 |
Fp | 45 °C |
storage temp. | room temp |
solubility | Soluble in water, ethanol, ethylene glycol, methyl cellosolve |
pka | |
form | Liquid |
Colour Index | 52015 |
color | Green |
Specific Gravity | 0.98 |
Odor | Odorless |
Water Solubility | 40 g/L (20 ºC) |
λmax | 661 nm |
Merck | 14,6060 |
BRN | 3641570 |
Biological Applications | Detecting microorganisms; treating diabetic retinopathy,macular degeneration,malignant uveal melanomas,erysipelas,hidradenitis suppurativa,inflammation,skin diseases |
NIST Chemistry Reference | Methylene blue(61-73-4) |
EPA Substance Registry System | Methylene blue (61-73-4) |
Safety Information
Hazard Codes | Xn |
Risk Statements | 10-41-22-20/21/22-36/37/38 |
Safety Statements | 26-39-36 |
RIDADR | UN 1993 3/PG 3 |
WGK Germany | 3 |
RTECS | SP5740000 |
HS Code | 32049010 |
Hazardous Substances Data | 61-73-4(Hazardous Substances Data) |
Toxicity | LD50 oral in rat: 1180mg/k |
Product Application of Methylene Blue CAS# 61-73-4
A 1% w/v aqueous methylene blue solution is a core reagent for multiple biological staining protocols, including Wright’s stain and Jenner’s stain. Beyond its staining applications, it functions as a laboratory indicator and clinical pharmaceutical agent. In molecular biology and microscopy workflows, it is routinely employed to visualize RNA and DNA specimens—both under optical microscopes and within gel electrophoresis matrices. Additionally, this solution serves as a widely used redox indicator in analytical chemistry experiments and acts as a key reagent for sulfide content analysis.
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