Molekula
4-(2-Pyridylazo)resorcinol
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
4-(2-Pyridylazo)resorcinol is a chromogenic reagent used in analytical chemistry for the detection and quantification of metal ions, particularly in spectrophotometric assays. It is a yellow to orange crystalline powder with a molecular formula of C11H9N3O2 and a molecular weight of 215.21 g/mol. CAS number: 1141-59-9. Store at ambient temperature. Signal word: Warning. Molekula supplies 4-(2-Pyridylazo)resorcinol 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.
-
5 g — £70.10 per pack ex VAT · £84.12 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 | Orange to red powder |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 27073123 |
| CAS Number | 1141-59-9 |
| IUPAC Name | 4-(pyridin-2-yldiazenyl)benzene-1,3-diol |
| EC Number | 214-528-6 |
| Molecular Formula | C11H9N3O2 |
| Molecular Weight | 215.21 |
| Exact Mass | 215.0695 |
| SMILES | C1=CC=NC(=C1)N=NC2=C(C=C(C=C2)O)O |
| InChIKey | RJNYNDHYSJRRDW-UHFFFAOYSA-N |
| InChI | InChI=1S/C11H9N3O2/c15-8-4-5-9(10(16)7-8)13-14-11-3-1-2-6-12-11/h1-7,15-16H |
| PubChem CID | 65069 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2933.39.92.00 |
| Tariff Code | 2933399999 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P231 Handle under inert gas
- 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, 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
- (e)-4-(pyridin-2-yldiazenyl)benzene-1,3-diol
- 1-(2-Pyridylazo)resorcinol
- 1,3-Benzenediol, 4-(2-pyridinylazo)-
- 1,3-Benzenediol, 4-[2-(2-pyridinyl)diazenyl]-
- 4-(2-pyridinylazo)-1,3-benzendiol
- 4-(2-Pyridlyazo)resorcinol
- 4-(2-Pyridylazo)-2-resorcinol
- 4-(Pyridin-2-yldiazenyl)benzene-1,3-diol
- 4-[(1E)-2-(pyridin-2-yl)diazen-1-yl]benzene-1,3-diol
- Resorcinol, 4-(2-pyridylazo)-
Frequently asked questions
What is 4-(2-Pyridylazo)resorcinol used for?
It is primarily used as a chromogenic reagent in analytical chemistry for the detection and quantification of metal ions, especially in spectrophotometric assays.
What is the chemical formula and molecular weight of 4-(2-Pyridylazo)resorcinol?
The chemical formula is C11H9N3O2 and the molecular weight is 215.21 g/mol.
How should 4-(2-Pyridylazo)resorcinol be stored?
It should be stored at ambient temperature, protected from light and moisture.
What grade is available for 4-(2-Pyridylazo)resorcinol?
Available in analytical grade; specific purity details are provided in the product certificate.
Can Molekula supply 4-(2-Pyridylazo)resorcinol in bulk?
Yes, Molekula can supply this compound in bulk quantities—please contact sales for pricing and availability.
What documentation comes with an order of 4-(2-Pyridylazo)resorcinol?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided 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.