Eosin methylene-blue
Synonym(s):Eosin – methylene blue solution;Eosin methylene blue according to May-Grünwald
- CAS NO.：6359-04-2
- Empirical Formula: C21H11Br4KO5
- Molecular Weight: 702.03
- MDL number: MFCD00005038
- EINECS: 228-792-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:50:38
What is Eosin methylene-blue?
The Uses of Eosin methylene-blue
May-Grünwald solution (Eosin – methylene blue solution) is used with Giemsa stain for histological staining of blood cells.
Preparation
Fluorescein (C.I. Acid Yellow 73, C.I. 45350) in water or ethanol solution bromide into four bromine derivatives, and then into sodium salt, then product (C.I. Acid Red 87) Metaclazepam change and translated into sylvine.
Properties and Applications
brilliant blue light red. Soluble in hot water for cherry red, soluble in ethanol aqueous solution to red, with brown light yellow fluorescence. In concentrated sulfuric acid to yellow, dilution after brown light yellow precipitation. Dye aqueous solution to join sodium hydroxide as dark solution, with green fluorescence.
| Standard | Light Fastness | Heat-resistant(℃) | water | Sodium Carbonate(5%) | Hydrochloric acid(5%) | |
| Melting point | Stable | |||||
| ISO | Slightly soluble | |||||
Properties of Eosin methylene-blue
| Density | 0.80 g/mL at 20 °C |
| Flash point: | 11 °C |
Safety information for Eosin methylene-blue
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08 |
| GHS Hazard Statements |
H225:Flammable liquids H301:Acute toxicity,oral H311:Acute toxicity,dermal H331:Acute toxicity,inhalation H370:Specific target organ toxicity, single exposure |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P311:Call a POISON CENTER or doctor/physician. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
Computed Descriptors for Eosin methylene-blue
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