Molekula
Fast Blue B salt
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Fast Blue B salt is a diazonium dye used primarily in histochemistry and immunohistochemistry for staining proteins, particularly in tissue samples. It reacts with aromatic amines and tyrosine residues, forming azo dyes for microscopic visualization. This chemical has a CAS number of 14263-94-6, a molecular formula of C14H12Cl4N4O2Zn, and a molecular weight of 475.47. It must be stored between 2 to 8 degrees Celsius and carries a Danger signal word, with hazard statements H302 (harmful if swallowed) and H350 (may cause cancer). Molekula supplies Fast Blue B salt from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £261.70 per pack ex VAT · £314.04 inc. VAT
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50 g — £400.00 per pack ex VAT · £480.00 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Yellow to dark brown powder |
| Assay | ≥95% min |
| Solubility (Turbidity) | Clear to slightly hazy |
| Solubility (Colour) | Yellow to Orange |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Transport Class | Not regulated |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 20777923 |
| CAS Number | 14263-94-6 |
| IUPAC Name | zinc;4-(4-diazonio-3-methoxyphenyl)-2-methoxybenzenediazonium;tetrachloride |
| EC Number | 238-153-2 |
| Molecular Formula | C14H12Cl4N4O2Zn |
| Molecular Weight | 475.47 |
| Exact Mass | 473.8976 |
| SMILES | COC1=C(C=CC(=C1)C2=CC(=C(C=C2)[N+]#N)OC)[N+]#N.[Cl-].[Cl-].[Cl-].[Cl-].[Zn+2] |
| InChIKey | GPPKNJIWDULNQH-UHFFFAOYSA-J |
| InChI | InChI=1S/C14H12N4O2.4ClH.Zn/c1-19-13-7-9(3-5-11(13)17-15)10-4-6-12(18-16)14(8-10)20-2;;;;;/h3-8H,1-2H3;4*1H;/q+2;;;;;+2/p-4 |
| PubChem CID | 84305 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| Tariff Code | 3204190090 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H350 May cause cancer
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 3,3'-dimethoxy[1,1'-biphenyl]-4,4'-bis(diazonium) chloride--dichlorozinc (1/2/1)
- 3,3'-dimethoxy[1,1'-biphenyl]-4,4'-bis(diazonium) zinc chloride (1/1/4)
- Azoic diazo 48
- C14H12Cl4N4O2Zn
- Diazo Blue B
- Fast Blue Salt B
- GPPKNJIWDULNQH-UHFFFAOYSA-J
- Naphthanil Diazo Blue B
- o-Dianisidine bis(diazotized) zinc double salt
Frequently asked questions
What is Fast Blue B salt used for?
Fast Blue B salt is a diazonium coupling reagent used mainly in enzyme histochemistry, where it couples with naphthols released by esterase or phosphatase activity, including in-gel isozyme activity staining. It is also used to detect cannabinoids and phenols, for example in thin-layer chromatography and urine tests for marijuana metabolites.
What is the chemical formula and molecular weight of Fast Blue B salt?
The chemical formula is C₁₄H₁₂Cl₄N₄O₂Zn and the molecular weight is 475.47 g/mol.
How should Fast Blue B salt be stored?
Store at 2–8°C in a cool, dry place, away from direct light and incompatible substances.
What grade of Fast Blue B salt does Molekula supply?
Molekula supplies analytical grade Fast Blue B salt, suitable for laboratory applications requiring high purity.
Can Molekula supply Fast Blue B salt in bulk quantities?
Yes, bulk quantities are available upon request—contact Molekula for custom packaging and pricing.
What documentation comes with an order of Fast Blue B salt?
Each order includes a Certificate of Analysis (CoA), Safety Data Sheet (SDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.