Methylene blue, polychrome

Name: Methylene blue, polychrome
Brand: Vaqora Chemicals
SKU: VQ-000634

About Methylene blue, polychrome

Methylene blue, polychrome (CAS 61-73-4) is a biological stain offered by Vaqora Chemicals in Microscopy grade. With the molecular formula C16H18ClN3S, it has a molar mass of 319.9 g/mol. Systematically, it is named [7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium chloride. Common synonyms include Ehrlich's reagent III and Loeffler's Methylene Blue.

The material typically appears as a black to green powder. Store sealed in a dry, well-ventilated location away from incompatible materials. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include histology and cytology staining, microscopy, clinical laboratories and biological staining. Typical end-use sectors are academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Standard pack sizes are 5 g, 25 g, 100 g and 1 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product name	Methylene blue, polychrome
Catalogue No.	VQ-000634
CAS Number	61-73-4
IUPAC name	[7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium chloride
Molecular formula	C₁₆H₁₈ClN₃S
Molecular weight	319.9 g/mol
Exact mass	319.091
Grade	Microscopy
HSN code	32041351
InChIKey	CXKWCBBOMKCUKX-UHFFFAOYSA-M
SMILES	CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]
PubChem CID	6099

Physical properties
Physical form	Powder
Appearance	Black to green powder
Solubility	Passes test
H-bond donors / acceptors	0 / 4
TPSA	43.9 Å²
Synonyms	Ehrlich's reagent III, Loeffler's Methylene Blue, Basic blue 9, Methylthioninium chloride, Solvent blue 8, Swiss Blue, C.I. Basic Blue 9, Methylene Blue anhydrous, Methylene Blue N, Methylene Blue BB, Urolene blue, Methylenium ceruleum

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H318Causes serious eye damage
H412Harmful to aquatic life with long lasting effects

Precautionary statements: P264, P264 + P265, P270, P273, P280, P301 + P317, P305 + P354 + P338, P317, P330, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 61-73-4

Microscopy

Methylene blue, 0.5% solution

CAS: 61-73-4
Formula: C₁₆H₁₈ClN₃S
MW: 319.9 g/mol

VQ-003598

Methylene blue, aqeous, staining solution

CAS: 61-73-4
Formula: C₁₆H₁₈ClN₃S
MW: 319.9 g/mol

VQ-003599

AR / Microscopy

Methylene blue, polychrome, AR, for microscopy

CAS: 61-73-4
Formula: C₁₆H₁₈ClN₃S
MW: 319.9 g/mol

VQ-047183

Methylene blue, tablets

CAS: 61-73-4
Formula: C₁₆H₁₈ClN₃S
MW: 319.9 g/mol

VQ-003353

Frequently asked questions

What is the CAS number of Methylene blue, polychrome?

The CAS Registry Number of Methylene blue, polychrome is 61-73-4. It is also known as Ehrlich's reagent III, Loeffler's Methylene Blue, Basic blue 9.

What is the molecular formula and molecular weight of Methylene blue, polychrome?

Methylene blue, polychrome has the molecular formula C16H18ClN3S and a molecular weight of 319.9 g/mol. Its IUPAC name is [7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium chloride.

Which grade and pack sizes of Methylene blue, polychrome can I order?

We supply Methylene blue, polychrome in Microscopy grade, in 5 g, 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Methylene blue, polychrome?

Yes. Every lot of Methylene blue, polychrome is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Methylene blue, polychrome be shipped internationally?

Yes. Methylene blue, polychrome is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.