METHYLENE GREEN
- CAS NO.：2679-01-8
- Empirical Formula: C16H17ClN4O2S
- Molecular Weight: 364.85
- MDL number: MFCD00151524
- EINECS: 220-231-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-24 14:58:06
What is METHYLENE GREEN?
Chemical properties
black powder
Definition
ChEBI: An organic chloride salt having 3,7-bis(dimethylamino)-4-nitrophenothiazin-5-ium as the counterion. It stains nuclei green and is sometimes used as a counterstain to red or purple primary stains.
Preparation
commonly known as Methylene Green. (C.I.Basic Blue 9, C.I. 52015) in the first use of hydrochloric acid sodium nitrite processing, and then treated with nitric acid and zinc chloride double salt precipitation..
Purification Methods
Crystallise the dye three times from water (18mL/g). [Beilstein 27 H 399.] The ZnCl2 double salt [6722-15-2] M 866.0 has the same CI.[Beilstein 27 III/IV 5157.]
Properties and Applications
dark blue light green. Soluble in water for green light blue, slightly soluble in ethanol for green light blue. In the dark for the strong sulfuric acid, diluted for green light blue. Dye with sodium hydroxide solution for purple, have violet black precipitation.
| Standard | Light Fastness | Persperation Fastness | Ironing Fastness | Soaping | |||
| Fading | Stain | Fading | Stain | Fading | Stain | ||
| B | 2 | 2 | 2 | ||||
| A | 5 | 4 | 3 | 3 | |||
Properties of METHYLENE GREEN
| form | Powder |
| color | Black |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
Safety information for METHYLENE GREEN
Computed Descriptors for METHYLENE GREEN
New Products
2-Bromo-4-hydroxypyridine Dibenzoyl-L-tartaric acid Anhydrous (Resolution Reagent) Dibenzo[b,f][1,4]thiazepin-11(10H)-one 1,2,3,9-Tetrahydro-9-Methyl-4H-Carbazole-4-One Cis-Tosylate 1-(4-methoxyphenyl)-4-(4-Nitrophenyl)Piperazine (IT-1) 1-aminocyclobutanecarbonitrile hydrochloride AMINO-O-TOLYL-ACETIC ACID 1-Aminocyclobutanecarboxylic Acid Hydrochloride AMINO(2-BROMOPHENYL)ACETIC ACID 6-BROMOTETRAZOLO[1,5-A]PYRIDINE 3-Oxocyclobutanecarboxylic acid METHANOL-D1(OD) TERTIARY BUTANOL-D9 N-ETHYL-D5-AMINE HYDROCHLORIDE BENZOIC ACID-D CHLOROFORM-D TOLUENE-D3 2-(2-Bromophenyl)ethanol Boc-D-Glu(OMe)-OMe 2,5 Dibromopyridine Ethyl 4-hydroxy-3-oxobutanoate Dimethyl (2S)-2-((tert-butoxycarbonyl)amino)-4-(cyanomethyl)pentanedioate 1-(3-Chlorophenyl)piperazine hydrochlorideRelated products of tetrahydrofuran
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