Molekula
Alphazurine A (Acid Blue 7)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Alphazurine A (Acid Blue 7) is a synthetic anionic dye used in textile and paper dyeing, as well as in analytical chemistry and research applications. It is a sodium salt with the molecular formula C37H35N2NaO6S2 and a molecular weight of 690.80 g/mol. CAS number: 3486-30-4. Stable at ambient storage conditions. No signal word required. Molekula supplies Alphazurine A (Acid Blue 7) 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
On backorder — expected to ship by 20 November 2026
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 — £41.90 per pack ex VAT · £50.28 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 | Bluish to Maroon to Dark Purple Powder |
| Loss on Drying | ≤ 5% |
| Solubility | Clear to Opaque, Dark Blue Solution |
| Identification (IR) | Conforms to structure |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90005052 |
| CAS Number | 3486-30-4 |
| IUPAC Name | sodium 4-[[4-[benzyl(ethyl)amino]phenyl]-[4-[benzyl(ethyl)azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]benzene-1,3-disulfonate |
| EC Number | 222-476-0 |
| Molecular Formula | C37H35N2NaO6S2 |
| Molecular Weight | 690.80 |
| Exact Mass | 690.1834 |
| SMILES | CCN(CC1=CC=CC=C1)C2=CC=C(C=C2)C(=C3C=CC(=[N+](CC)CC4=CC=CC=C4)C=C3)C5=C(C=C(C=C5)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+] |
| InChIKey | FTUYQIPAPWPHNC-UHFFFAOYSA-M |
| InChI | InChI=1S/C37H36N2O6S2.Na/c1-3-38(26-28-11-7-5-8-12-28)32-19-15-30(16-20-32)37(35-24-23-34(46(40,41)42)25-36(35)47(43,44)45)31-17-21-33(22-18-31)39(4-2)27-29-13-9-6-10-14-29;/h5-25H,3-4,26-27H2,1-2H3,(H-,40,41,42,43,44,45);/q;+1/p-1 |
| PubChem CID | 62498 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 3212.90.0050 |
| Tariff Code | 3212900000 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- Acid blue 7
- Acid Sky Blue O
- Acid Turquoise Blue A
- Carmine Blue AF
- Erio Glaucine X
- Fenazo bluexg
- Hidacid Blue A
- Hidacid Blue AF
- Patent Blue A
- Patent Blue AF
Frequently asked questions
What is Alphazurine A (Acid Blue 7) used for?
Alphazurine A is primarily used as a dye in textile and leather coloring, and as a pH indicator in analytical chemistry.
What is the chemical formula and molecular weight of Alphazurine A?
The formula is C37H35N2NaO6S2 with a molecular weight of 690.80 g/mol.
How should Alphazurine A be stored?
It should be stored at ambient temperature, protected from moisture and direct sunlight.
What grade of Alphazurine A is available?
Molekula supplies Alphazurine A in technical grade for industrial and research applications.
Can Molekula supply Alphazurine A in bulk?
Yes, Molekula can supply Alphazurine A in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with an order of Alphazurine A?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) upon request.
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.