Molekula
Martius Yellow
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
Martius Yellow is a synthetic organic dye used in analytical chemistry and as a pH indicator. It appears as a yellow crystalline powder and is employed in titrations and staining applications. CAS: 605-69-6, Molecular Formula: C10H6N2O5, Molecular Weight: 234.17 g/mol, Storage: Ambient, Signal Word: Warning. Molekula supplies Martius Yellow 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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5 g — £30.90 per pack ex VAT · £37.08 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 orange to brown powder |
| Dye Content | ≥85% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 89994530 |
| CAS Number | 605-69-6 |
| IUPAC Name | 2,4-dinitronaphthalen-1-ol |
| EC Number | 210-093-1 |
| Molecular Formula | C10H6N2O5 |
| Molecular Weight | 234.17 |
| Exact Mass | 234.0277 |
| SMILES | C1=CC=C2C(=C1)C(=CC(=C2O)[N+](=O)[O-])[N+](=O)[O-] |
| InChIKey | FFRBMBIXVSCUFS-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H6N2O5/c13-10-7-4-2-1-3-6(7)8(11(14)15)5-9(10)12(16)17/h1-5,13H |
| PubChem CID | 11802 |
| REACH Code | Y110 |
| HTS Code | 29089980 |
| Tariff Code | 2908990000 |
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
- 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
- 1-Naphthalenol, 2,4-dinitro-
- 2,4-Dinitro-1-naphthol
- 2,4-dinitronaphthalen-1-ol
- C.I. 10315
- Manchester Yellow
- Martinsgelb
- Naphthylene Yellow
- Saffron Yellow
- Zlut marciova
- Zlut naftolova
Frequently asked questions
What is Martius Yellow used for?
Martius Yellow is primarily used as a pH indicator in analytical chemistry and as a dye in textile and paper industries.
What is the chemical formula and molecular weight of Martius Yellow?
The chemical formula is C10H6N2O5 with a molecular weight of 234.17 g/mol.
How should Martius Yellow be stored?
Martius Yellow should be stored at ambient temperature, protected from moisture and light.
What grade of Martius Yellow does Molekula supply?
Molekula supplies Martius Yellow in analytical grade.
Can Molekula supply Martius Yellow in bulk quantities?
Yes, Molekula can supply Martius Yellow in bulk quantities—please contact our sales team for details.
What documentation comes with a Martius Yellow order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.