Molekula
Sirius Red Powder C.I. 35780
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
Sirius Red Powder C.I. 35780 is a synthetic azo dye used primarily in textile and leather dyeing, as well as in biological staining for histology. It is a water-soluble, red crystalline powder with a molecular formula of C45H26N10O21S6 and a molecular weight of 1373.05 g/mol. CAS number: 2610-10-8. Stable at ambient storage conditions. No signal word required. Molekula supplies Sirius Red Powder C.I. 35780 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.
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25 g — $97.30 per pack
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Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Red to purple to dark brown powder |
| Dye Content | 20-25% |
| Lambda max | 528nm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90028587 |
| CAS Number | 2610-10-8 |
| Molecular Formula | C45H26N10O21S6 |
| Molecular Weight | 1373.05 |
| SMILES | [Na].O=C(NC=1C=CC2=C(O)C(N=NC3=CC=C(N=NC4=CC=C(C=C4)S(=O)(=O)O)C=C3S(=O)(=O)O)=C(C=C2C1)S(=O)(=O)O)NC=5C=CC6=C(O)C(N=NC7=CC=C(N=NC8=CC=C(C=C8)S(=O)(=O)O)C=C7S(=O)(=O)O)=C(C=C6C5)S(=O)(=O)O |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 32129000 |
| Tariff Code | 3212900000 |
Safety & GHS
Hazard statements
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
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 Sirius Red Powder C.I. 35780 used for?
It is primarily used as a dye in textile and leather applications, particularly for coloring synthetic fibers and in dyeing processes requiring high color fastness.
What is the chemical formula and molecular weight of Sirius Red Powder C.I. 35780?
The formula is C45H26N10O21S6 with a molecular weight of 1373.05 g/mol.
How should Sirius Red Powder C.I. 35780 be stored?
It should be stored at ambient temperature, protected from moisture and direct sunlight.
What grade of Sirius Red Powder C.I. 35780 is available?
Available in technical grade; specific purity details can be provided upon request.
Can Molekula supply Sirius Red Powder C.I. 35780 in bulk?
Yes, Molekula can supply this product in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of Sirius Red Powder C.I. 35780?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation is available 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.