Victoria blue

Name: Victoria blue
Brand: Vaqora Chemicals
SKU: VQ-000732

About Victoria blue

Victoria blue (CAS 2580-56-5) is a biological stain offered by Vaqora Chemicals (Microscopy grade). Formula C33H32ClN3, molecular weight 506.1 g/mol. The IUPAC name is [4-[bis[4-(dimethylamino)phenyl]methylidene]naphthalen-1-ylidene]-phenylazanium chloride. It is also known as Basic Blue 26 or Basic Blue B.

It is supplied as a powder. Literature values give a melting point of 206 °C (dec.). Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for histology and cytology staining, microscopy, clinical laboratories and analytical determinations. It is used across academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Standard pack sizes are 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
Analytical determinations

Industries

Specifications & identifiers

Chemical identifiers
Product name	Victoria blue
Catalogue No.	VQ-000732
CAS Number	2580-56-5
IUPAC name	[4-[bis[4-(dimethylamino)phenyl]methylidene]naphthalen-1-ylidene]-phenylazanium chloride
Molecular formula	C₃₃H₃₂ClN₃
Molecular weight	506.1 g/mol
Exact mass	505.2285
Grade	Microscopy
HSN code	32041359
InChIKey	LLWJPGAKXJBKKA-UHFFFAOYSA-N
SMILES	CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[NH+]C3=CC=CC=C3)C4=CC=CC=C24)C5=CC=C(C=C5)N(C)C.[Cl-]
PubChem CID	17407

Physical properties
Physical form	Powder
Appearance	Powder
Melting point	206 °C (dec.)
H-bond donors / acceptors	1 / 3
TPSA	20.5 Å²
Synonyms	Basic Blue 26, Basic Blue B, Victoria blue B, Calcozine Blue B, Tertrophene Blue, Victoria Pure Blue B, Hecto Blue B, Victoria Blue BX, Aizen Victoria Blue B Base, Hekto Blue B, Victoria Blue BA, Victoria Blue BN

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Environmental hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H317May cause an allergic skin reaction
H318Causes serious eye damage
H319Causes serious eye irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P261, P264, P264 + P265, P270, P272, P273, P280, P301 + P317, P302 + P352, P305 + P351 + P338, P305 + P354 + P338, P317, P321, P330, P333 + P317, P337 + P317, P362 + P364, P391, 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 Victoria blue?

The CAS Registry Number of Victoria blue is 2580-56-5. It is also known as Basic Blue 26, Basic Blue B, Victoria blue B.

What is the molecular formula and molecular weight of Victoria blue?

Victoria blue has the molecular formula C33H32ClN3 and a molecular weight of 506.1 g/mol. Its IUPAC name is [4-[bis[4-(dimethylamino)phenyl]methylidene]naphthalen-1-ylidene]-phenylazanium chloride.

Which grade and pack sizes of Victoria blue can I order?

We supply Victoria blue in Microscopy grade, in 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 Victoria blue?

Yes. Every lot of Victoria blue 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 Victoria blue be shipped internationally?

Yes. Victoria blue 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.