Azure II

Name: Azure II
Brand: Vaqora Chemicals
SKU: VQ-000487

About Azure II

Vaqora Chemicals supplies Azure II in Microscopy grade, a biological stain registered under CAS number 37247-10-2. Its molecular formula is C31H34Cl2N6S2 and its molecular weight is 625.7 g/mol. It is also known as Methylene Azure II or Azur II.

The product is provided as a powder. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 5 hazard statements. Review the Safety Data Sheet before use.

Key uses span histology and cytology staining, microscopy, clinical laboratories and biological staining. Our customers for this product work in academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer Azure II in 10 g, 25 g, 100 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product name	Azure II
Catalogue No.	VQ-000487
CAS Number	37247-10-2
IUPAC name	[7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;dimethyl-[7-(methylamino)phenothiazin-3-ylidene]azanium;dichloride
Molecular formula	C₃₁H₃₄Cl₂N₆S₂
Molecular weight	625.7 g/mol
Exact mass	624.1663
Grade	Microscopy
HSN code	32049000
InChIKey	YOWZJZJLXUQHGF-UHFFFAOYSA-M
SMILES	CNC1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-].[Cl-]
PubChem CID	16218618

Physical properties
Physical form	Powder
Appearance	Powder
H-bond donors / acceptors	1 / 8
TPSA	96.6 Å²
Synonyms	Methylene Azure II, Azur II, Azure II, powder, 3-Chloro-6-hydroxy-2-Pyridinecarboxylic acid, Azure B-Methylene Blue Mixture (1:1)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P317, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, 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

Frequently asked questions

What is the CAS number of Azure II?

The CAS Registry Number of Azure II is 37247-10-2. It is also known as Methylene Azure II, Azur II, Azure II, powder.

What is the molecular formula and molecular weight of Azure II?

Azure II has the molecular formula C31H34Cl2N6S2 and a molecular weight of 625.7 g/mol.

Which grade and pack sizes of Azure II can I order?

We supply Azure II in Microscopy grade, in 10 g, 25 g, 100 g, 1 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Azure II?

Yes. Every lot of Azure II 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 Azure II be shipped internationally?

Yes. Azure II 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.