Methylene blue, GR

Name: Methylene blue, GR
Brand: Vaqora Chemicals
SKU: VQ-000632

About Methylene blue, GR

Vaqora Chemicals supplies Methylene blue in AR grade, a biological stain registered under CAS number 122965-43-9. Formula C16H20ClN3OS, molecular weight 337.9 g/mol. Systematically, it is named [7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium. Chloride. Hydrate. Alternative names: Basic Blue 9 and Tetramethylthionine chloride.

It is supplied as a dark green powder. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

Key uses span histology and cytology staining, microscopy, clinical laboratories and indicator for titrations. Buyers come mainly from academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer Methylene blue in 25 g, 100 g, 1 kg and 5 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Indicator for titrations

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Methylene blue, GR
Catalogue No.	VQ-000632
CAS Number	122965-43-9
IUPAC name	[7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;chloride;hydrate
Molecular formula	C₁₆H₂₀ClN₃OS
Molecular weight	337.9 g/mol
Exact mass	337.1016
Grade	AR
HSN code	32041351
InChIKey	WQVSELLRAGBDLX-UHFFFAOYSA-M
SMILES	CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.O.[Cl-]
PubChem CID	16211647

Physical properties
Physical form	Powder
Appearance	Dark green powder
Solubility	Passes test
H-bond donors / acceptors	1 / 5
TPSA	44.9 Å²
Synonyms	3,7-bis(Dimethylamino)phenazathionium chloride, Basic Blue 9, Tetramethylthionine chloride, Methylene Blue hydrate, Methylene Blue monohydrate, Basic Blue 9 monohydrate, Methylene Blue (hydrate), C.i. basic Blue 9 monohydrate, 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride hydrate(1:1:x), 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride xhydrate, Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride, hydrate (1:1:3)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + 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 122965-43-9

Microscopy

Methylene blue

CAS: 122965-43-9
Formula: C₁₆H₂₀ClN₃OS
MW: 337.9 g/mol

VQ-000631

Methylene blue, hydrate, ≥95%

CAS: 122965-43-9
Formula: C₁₆H₂₀ClN₃OS
MW: 337.9 g/mol

VQ-000633

Neisser's stain A

CAS: 122965-43-9
Formula: C₁₆H₂₀ClN₃OS
MW: 337.9 g/mol

VQ-003605

Frequently asked questions

What is the CAS number of Methylene blue, GR?

The CAS Registry Number of Methylene blue, GR is 122965-43-9. It is also known as 3,7-bis(Dimethylamino)phenazathionium chloride, Basic Blue 9, Tetramethylthionine chloride.

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

Methylene blue, GR has the molecular formula C16H20ClN3OS and a molecular weight of 337.9 g/mol.

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

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

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

Yes. Every lot of Methylene blue, GR 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, GR be shipped internationally?

Yes. Methylene blue, GR 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.