Alkali blue 4B

Name: Alkali blue 4B
Brand: Vaqora Chemicals
SKU: VQ-000313

About Alkali blue 4B

Alkali blue 4B is an indicator (Microscopy grade) carrying the CAS registry number 62152-67-4. Its molecular formula is C32H26N3NaO3S and its molecular weight is 555.6 g/mol.

The material typically appears as a dark green to blue powder. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

It is commonly used for titration end-point detection, pH determination, analytical testing and biological staining. Buyers come mainly from academic and industrial research.

Standard pack sizes are 10 g, 25 g and 1 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Titration end-point detection
pH determination
Analytical testing
Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product name	Alkali blue 4B
Catalogue No.	VQ-000313
CAS Number	62152-67-4
IUPAC name	sodium 2-[[4-[(4-amino-3-methylphenyl)-(4-anilinophenyl)methylidene]cyclohexa-2,5-dien-1-ylidene]amino]benzenesulfonate
Molecular formula	C₃₂H₂₆N₃NaO₃S
Molecular weight	555.6 g/mol
Exact mass	555.1593
Grade	Microscopy
HSN code	32129090
InChIKey	PNDOLKLHAXMWLU-UHFFFAOYSA-M
SMILES	CC1=C(C=CC(=C1)C(=C2C=CC(=NC3=CC=CC=C3S(=O)(=O)[O-])C=C2)C4=CC=C(C=C4)NC5=CC=CC=C5)N.[Na+]
PubChem CID	23696814

Physical properties
Physical form	Powder
Appearance	Dark green to blue powder
H-bond donors / acceptors	2 / 6
TPSA	116 Å²

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, 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 Alkali blue 4B?

The CAS Registry Number of Alkali blue 4B is 62152-67-4.

What is the molecular formula and molecular weight of Alkali blue 4B?

Alkali blue 4B has the molecular formula C32H26N3NaO3S and a molecular weight of 555.6 g/mol. Its IUPAC name is sodium 2-[[4-[(4-amino-3-methylphenyl)-(4-anilinophenyl)methylidene]cyclohexa-2,5-dien-1-ylidene]amino]benzenesulfonate.

Which grade and pack sizes of Alkali blue 4B can I order?

We supply Alkali blue 4B in Microscopy grade, in 10 g, 25 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Alkali blue 4B?

Yes. Every lot of Alkali blue 4B 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 Alkali blue 4B be shipped internationally?

Yes. Alkali blue 4B 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.