Molekula
Sudan Red G (C.I. 12150)
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
Sudan Red G (C.I. 12150) is a bright red azo dye used primarily in industrial applications, including pigments, inks, and as a tracer in petroleum products. It is also historically used in research for staining fats and oils, though its use is restricted in food products due to toxicity concerns. This chemical has a CAS number of 1229-55-6, with the molecular formula C17H14N2O2 and a molecular weight of 278.31. It should be stored at ambient conditions and handled with caution, as it carries a **Danger** signal word. Molekula supplies Sudan Red G 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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 | red powder |
| Purity (HPLC) | 95.0 - 100.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 20642416 |
| CAS Number | 1229-55-6 |
| IUPAC Name | 1-[(2-methoxyphenyl)diazenyl]naphthalen-2-ol |
| EC Number | 214-968-9 |
| Molecular Formula | C17H14N2O2 |
| Molecular Weight | 278.31 |
| Exact Mass | 278.1055 |
| SMILES | COC1=CC=CC=C1N=NC2=C(C=CC3=CC=CC=C32)O |
| InChIKey | ALLOLPOYFRLCCX-UHFFFAOYSA-N |
| InChI | InChI=1S/C17H14N2O2/c1-21-16-9-5-4-8-14(16)18-19-17-13-7-3-2-6-12(13)10-11-15(17)20/h2-11,20H,1H3 |
| PubChem CID | 14678 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 32129000 |
| Tariff Code | 3212900000 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
Hazard statements
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H341 Suspected of causing genetic defects
- H350 May cause cancer
- H413 May cause long lasting harmful effects to aquatic life
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- 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
- 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
- 1-((2-Methoxyphenyl)diazenyl)naphthalen-2-ol
- 1-(2-Methoxyphenylazo)-2-naphthol
- C.I. Solvent Red 1
- Ceres Red G
- Fat Red BG
- Fat Soluble Red S
- Organol Vermilion
- Solvent red 1
- Sudan R
- Sudan Red G
Frequently asked questions
What is Sudan Red G (C.I. 12150) commonly used for?
Sudan Red G is primarily used as a dye in oils, waxes, and solvents, as well as in analytical chemistry for staining and microscopy applications.
What is the chemical formula and molecular weight of Sudan Red G?
The chemical formula is **C₁₇H₁₄N₂O₂** with a molecular weight of **278.31 g/mol**.
How should Sudan Red G be stored?
Store at **ambient temperature** in a cool, dry place, away from direct sunlight and incompatible substances.
What grade or purity levels are available for Sudan Red G?
Molekula supplies **analytical grade** and **technical grade** Sudan Red G, with purity levels specified on the product datasheet.
Can Molekula supply Sudan Red G in bulk quantities?
Yes, we offer bulk quantities of Sudan Red G, with flexible packaging options (drums, bags, or custom solutions) for large orders.
What documentation comes with an order of Sudan Red G?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
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.