Fast Blue RR

Name: Fast Blue RR
Brand: Vaqora Chemicals
SKU: VQ-000576

About Fast Blue RR

Vaqora Chemicals supplies Fast Blue RR, a biological stain registered under CAS number 6268-05-9 with a typical assay of 97%. The compound has the formula C15H16N2O3, corresponding to a molecular weight of 272.3 g/mol. Systematically, it is named N-(4-amino-2,5-dimethoxyphenyl)benzamide. Common synonyms include 4-Benzoylamino-2,5-dimethoxyaniline and Azoic Diazo No. 24.

In its supplied form it is powder or crystals. Reported physical data include a melting point of 165-168 °C. Keep the material at room temperature in a dry place and protect it from moisture. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Typical applications include 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.

We offer Fast Blue RR in 5 g and 25 g 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	Fast Blue RR
Catalogue No.	VQ-000576
CAS Number	6268-05-9
IUPAC name	N-(4-amino-2,5-dimethoxyphenyl)benzamide
Molecular formula	C₁₅H₁₆N₂O₃
Molecular weight	272.3 g/mol
Exact mass	272.1161
Purity / assay	97%
HSN code	29332990
InChIKey	DDRCIGNRLHTTIW-UHFFFAOYSA-N
SMILES	COC1=CC(=C(C=C1N)OC)NC(=O)C2=CC=CC=C2
PubChem CID	80442

Physical properties
Physical form	Crystalline
Appearance	Powder or crystals
Melting point	165-168 °C
LogP (XLogP3)	2
H-bond donors / acceptors	2 / 4
TPSA	73.6 Å²
Storage	Room temperature
Synonyms	4-Benzoylamino-2,5-dimethoxyaniline, Azoic Diazo No. 24, Fast Blue RR Base, 4'-Amino-2',5'-dimethoxybenzanilide, Benzamide, N-(4-amino-2,5-dimethoxyphenyl)-, 4-Benzamido-2,5-dimethoxyaniline, Daito Blue Base RR, Neutrosel Blue R, Fast Navy DR, Blue Salt NRR, Sanyo Fast Blue RR Base, Fast Blue Base RR

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 Fast Blue RR?

The CAS Registry Number of Fast Blue RR is 6268-05-9. It is also known as 4-Benzoylamino-2,5-dimethoxyaniline, Azoic Diazo No. 24, Fast Blue RR Base.

What is the molecular formula and molecular weight of Fast Blue RR?

Fast Blue RR has the molecular formula C15H16N2O3 and a molecular weight of 272.3 g/mol. Its IUPAC name is N-(4-amino-2,5-dimethoxyphenyl)benzamide.

Which grade and pack sizes of Fast Blue RR can I order?

We supply Fast Blue RR in (97%) grade, in 5 g, 25 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Fast Blue RR?

Yes. Every lot of Fast Blue RR 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 Fast Blue RR be shipped internationally?

Yes. Fast Blue RR 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.

How should Fast Blue RR be stored?

Room temperature. Keep the container tightly closed and refer to the SDS for full handling guidance.