Bismark brown R, for spectroscopy 40%

Name: Bismark brown R, for spectroscopy 40%
Brand: Vaqora Chemicals
SKU: VQ-046146

About Bismark brown R, for spectroscopy 40%

Bismark brown R is a biological stain in Spectroscopy grade carrying the CAS registry number 5421-66-9 with a typical assay of 40%. Formula C21H26Cl2N8, molecular weight 461.4 g/mol. Common synonyms include Bismarck Brown R and Basic Brown 4.

Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for histology and cytology staining, microscopy, clinical laboratories and biological staining. 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. SDS and detailed specification sheets can be requested with your quotation.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Bismark brown R, for spectroscopy 40%
Catalogue No.	VQ-046146
CAS Number	5421-66-9
IUPAC name	4-[[3-[(2,4-diamino-5-methylphenyl)diazenyl]-4-methylphenyl]diazenyl]-6-methylbenzene-1,3-diamine;dihydrochloride
Molecular formula	C₂₁H₂₆Cl₂N₈
Molecular weight	461.4 g/mol
Exact mass	460.1657
Grade	Spectroscopy
Purity / assay	40%
HSN code	32129090
InChIKey	WLKAMFOFXYCYDK-UHFFFAOYSA-N
SMILES	CC1=C(C=C(C=C1)N=NC2=C(C=C(C(=C2)C)N)N)N=NC3=C(C=C(C(=C3)C)N)N.Cl.Cl
PubChem CID	79459

Physical properties
Physical form	Other
H-bond donors / acceptors	6 / 8
TPSA	154 Å²
Synonyms	Bismarck Brown R, Basic Brown 4, Astra Vesuvine B, Basic Brown 2K, 2,4-Bis(2,4-diamino-5-methyl-1-benzenazo)toluene, Vesuvine, C.I. Basic Brown 4, dihydrochloride, Bismarck Brown TSS, Bismarck Brown RLNS, C.I. Basic Brown 4, dihydrochloride (8CI)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H312Harmful in contact with skin
H315Causes skin irritation

Precautionary statements: P264, P280, P302 + P352, P317, P321, P332 + P317, P362 + P364, 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 5421-66-9

Microscopy

Bismark brown R

CAS: 5421-66-9
Formula: C₂₁H₂₆Cl₂N₈
MW: 461.4 g/mol

VQ-000501

Frequently asked questions

What is the CAS number of Bismark brown R, for spectroscopy 40%?

The CAS Registry Number of Bismark brown R, for spectroscopy 40% is 5421-66-9. It is also known as Bismarck Brown R, Basic Brown 4, Astra Vesuvine B.

What is the molecular formula and molecular weight of Bismark brown R, for spectroscopy 40%?

Bismark brown R, for spectroscopy 40% has the molecular formula C21H26Cl2N8 and a molecular weight of 461.4 g/mol.

Which grade and pack sizes of Bismark brown R, for spectroscopy 40% can I order?

We supply Bismark brown R, for spectroscopy 40% in Spectroscopy (40%) 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 Bismark brown R, for spectroscopy 40%?

Yes. Every lot of Bismark brown R, for spectroscopy 40% 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 Bismark brown R, for spectroscopy 40% be shipped internationally?

Yes. Bismark brown R, for spectroscopy 40% 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.