Molekula
Naphthol Orange
Naphthol Orange is a sodium salt of a diazo dye used in textile and pigment applications. It is a bright orange powder with good lightfastness and stability. CAS: 523-44-4, Molecular Formula: C16H11N2NaO4S, Molecular Weight: 350.32. Stored at ambient temperature. No signal word applies. Molekula supplies Naphthol Orange from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Naphthol Orange is a sodium salt of a diazo dye used in textile and pigment applications. It is a bright orange powder with good lightfastness and stability. CAS: 523-44-4, Molecular Formula: C16H11N2NaO4S, Molecular Weight: 350.32. Stored at ambient temperature. No signal word applies. Molekula supplies Naphthol Orange from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Orange to red powder |
| pH | 7.6 - 8.9 |
| Loss on Drying | ≤ 6.0% |
| Assay | ⩾ 85.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 48 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 523-44-4 |
| Molecular Formula | C16H11N2NaO4S |
| Molecular Weight | 350.32 |
| SMILES | [Na].O=S(=O)(O)C1=CC=C(N=NC2=CC=C(O)C=3C=CC=CC23)C=C1 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2927005000 |
| Tariff Code | 2927000090 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
For research and industrial use only
Documents
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.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Naphthol Orange used for?
Naphthol Orange is primarily used as a dye intermediate in the production of azo dyes for textiles and pigments.
What is the chemical formula and molecular weight of Naphthol Orange?
The formula is C16H11N2NaO4S with a molecular weight of 350.32 g/mol.
How should Naphthol Orange be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of Naphthol Orange is available?
Molekula offers Naphthol Orange in technical grade for industrial applications.
Can Molekula supply Naphthol Orange in bulk?
Yes, Molekula can supply Naphthol Orange in bulk quantities upon request.
What documentation comes with a purchase of Naphthol Orange?
Each order includes a Certificate of Analysis 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.