Molekula
Evans Blue (C.I.23860)
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
Evans Blue (C.I. 23860) is a water-soluble, anionic dye used primarily in biochemical assays for protein quantification and as a marker in electrophoresis and membrane permeability studies. It is a complex sodium salt with the molecular formula C34H24N6Na4O14S4 and a molecular weight of 960.81 g/mol. CAS number: 314-13-6. Store at ambient temperature. Hazard classification includes signal word: Danger. Molekula supplies Evans Blue (C.I. 23860) 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.
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 — £103.30 per pack ex VAT · £123.96 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 | Black powder |
| Loss on Drying | ≤10% |
| Wavelength of Max. Absorption | 605 - 613nm |
| Specific Absorbance (E 1%/1cm) | ≥800 |
| Solubility (0.1% water) | Clear blue solution |
| Total Colour/ Assay | ≥85.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 14235117 |
| CAS Number | 314-13-6 |
| IUPAC Name | tetrasodium;4-amino-6-[[4-[4-[(8-amino-1-hydroxy-5,7-disulfonatonaphthalen-2-yl)diazenyl]-3-methylphenyl]-2-methylphenyl]diazenyl]-5-hydroxynaphthalene-1,3-disulfonate |
| EC Number | 206-242-5 |
| Molecular Formula | C34H24N6Na4O14S4 |
| Molecular Weight | 960.81 |
| Exact Mass | 959.9824 |
| SMILES | CC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=C(C=C3)C(=CC(=C4N)S(=O)(=O)[O-])S(=O)(=O)[O-])O)C)N=NC5=C(C6=C(C=C5)C(=CC(=C6N)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[Na+].[Na+].[Na+].[Na+] |
| InChIKey | ATNOAWAQFYGAOY-UHFFFAOYSA-J |
| InChI | InChI=1S/C34H28N6O14S4.4Na/c1-15-11-17(3-7-21(15)37-39-23-9-5-19-25(55(43,44)45)13-27(57(49,50)51)31(35)29(19)33(23)41)18-4-8-22(16(2)12-18)38-40-24-10-6-20-26(56(46,47)48)14-28(58(52,53)54)32(36)30(20)34(24)42;;;;/h3-14,41-42H,35-36H2,1-2H3,(H,43,44,45)(H,46,47,48)(H,49,50,51)(H,52,53,54);;;;/q;4*+1/p-4 |
| PubChem CID | 9409 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 3212900050 |
| Tariff Code | 3212900000 |
Safety & GHS
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Serious Health Hazard
GHS08
Hazard statements
- H350 May cause cancer
Precautionary statements
- P201 Obtain special instructions before use
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
- Azovan Blue
- C.I. 23860
- C.I. DIRECT BLUE 53
- C.I. direct blue 53 tetrasodium salt
- Diazobleu
- Direct Blue 53
- Dye Evans Blue
- Evablin
- evans blue
- Geigy-blau 536
Frequently asked questions
What is Evans Blue used for?
Evans Blue is primarily used as a dye in biological and medical research, particularly for protein binding assays and as a marker in capillary permeability studies.
What is the chemical formula and molecular weight of Evans Blue?
The formula is C34H24N6Na4O14S4 with a molecular weight of 960.81 g/mol.
How should Evans Blue be stored?
Store at ambient temperature, protected from light and moisture.
What grade of Evans Blue does Molekula supply?
Molekula supplies Evans Blue in analytical grade.
Can Molekula supply Evans Blue in bulk?
Yes, Molekula can supply Evans Blue in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of Evans Blue?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the product.
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.