Molekula
Aniline Blue (C.I. 42755)
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
Aniline Blue (C.I. 42755) is a sodium salt dye used in textile and ink applications for its intense blue color. It is a complex organic compound with the molecular formula C32H25N3O9S3·2Na and a molecular weight of 737.73 g/mol. It is stable at ambient storage conditions and carries a warning signal word due to potential hazards. Molekula supplies Aniline Blue (C.I. 42755) 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 — $165.70 per pack
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 | Shiny brownish crystalline powder |
| Dye Content | 18.4 ml TiCl3/gm |
| Spectroscopy | As per Biological Stain Commission |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
Identification
| Property | Value |
|---|---|
| SKU | 65036210 |
| CAS Number | 28631-66-5 |
| Molecular Formula | C32H25N3O9S3·2Na |
| Molecular Weight | 737.73 |
| SMILES | CC1=CC(=CC(=C1N)S(=O)(=O)O)C(=C2C=CC(=[NH+]C3=CC=C(C=C3)S(=O)(=O)[O-])C=C2)C4=CC=C(C=C4)NC5=CC=C(C=C5)S(=O)(=O)[O-].[Na+].[Na+] |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 32041245 |
| Tariff Code | 3204120090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
No alternate names recorded for this product.
Frequently asked questions
What is Aniline Blue (C.I. 42755) used for?
Aniline Blue (C.I. 42755) is primarily used as a dye in textile and leather coloring, and in analytical chemistry as a pH indicator.
What is the chemical formula and molecular weight of Aniline Blue?
The formula is C32H25N3O9S3·2Na with a molecular weight of 737.73 g/mol.
How should Aniline Blue be stored?
Store at ambient temperature, protected from moisture and direct sunlight.
What grade of Aniline Blue is available?
Molekula supplies Aniline Blue (C.I. 42755) in technical grade.
Can Molekula supply Aniline Blue in bulk?
Yes, Molekula can supply Aniline Blue in bulk quantities—please contact sales for details.
What documentation comes with an order of Aniline Blue?
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.