Trypan blue

Name: Trypan blue
Brand: Vaqora Chemicals
SKU: VQ-000731

About Trypan blue

Trypan blue is a biological stain in Microscopy grade carrying the CAS registry number 72-57-1. Its molecular formula is C34H24N6Na4O14S4 and its molecular weight is 960.8 g/mol. Common synonyms include Direct blue 14 and C.I. Direct Blue 14.

The material typically appears as a dark green to brown or brown-black to dark blue powder. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 1 hazard statement. Review the Safety Data Sheet before use.

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

Standard pack sizes are 25 g, 100 g, 1 kg and 5 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	Trypan blue
Catalogue No.	VQ-000731
CAS Number	72-57-1
IUPAC name	tetrasodium;5-amino-3-[[4-[4-[(8-amino-1-hydroxy-3,6-disulfonatonaphthalen-2-yl)diazenyl]-3-methylphenyl]-2-methylphenyl]diazenyl]-4-hydroxynaphthalene-2,7-disulfonate
Molecular formula	C₃₄H₂₄N₆Na₄O₁₄S₄
Molecular weight	960.8 g/mol
Exact mass	959.9824
Grade	Microscopy
HSN code	32049000
InChIKey	GLNADSQYFUSGOU-UHFFFAOYSA-J
SMILES	CC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=C(C=C(C=C4C=C3S(=O)(=O)[O-])S(=O)(=O)[O-])N)O)C)N=NC5=C(C6=C(C=C(C=C6C=C5S(=O)(=O)[O-])S(=O)(=O)[O-])N)O.[Na+].[Na+].[Na+].[Na+]
PubChem CID	6296

Physical properties
Physical form	Powder
Appearance	Dark green to brown or brown-black to dark blue powder
H-bond donors / acceptors	4 / 20
TPSA	404 Å²
Synonyms	Direct blue 14, C.I. Direct Blue 14, Niagara Blue, Benzamine Blue, Dianil blue, Benzo Blue, Congo Blue, Naphthylamine Blue, Diphenyl Blue, Diamine Blue, Niagara Blue 3B, trypan-blue

Safety & hazard information (GHS)

Health hazard

Signal word: Danger

Hazard statements

H350May cause cancer

Precautionary statements: P201, P308 + P313

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 72-57-1

AR

Trypan blue, AR

CAS: 72-57-1
Formula: C₃₄H₂₄N₆Na₄O₁₄S₄
MW: 960.8 g/mol

VQ-046952

Frequently asked questions

What is the CAS number of Trypan blue?

The CAS Registry Number of Trypan blue is 72-57-1. It is also known as Direct blue 14, C.I. Direct Blue 14, Niagara Blue.

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

Trypan blue has the molecular formula C34H24N6Na4O14S4 and a molecular weight of 960.8 g/mol.

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

We supply Trypan blue in Microscopy 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 Trypan blue?

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

Yes. Trypan 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.