Molekula
Zincon
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
Zincon is a highly selective chelating agent, primarily used as an analytical reagent for detecting and quantifying zinc ions in solution. It forms a stable, water-soluble complex with zinc, enabling precise colorimetric and spectrophotometric analysis in laboratories and industrial quality control. This chemical has a CAS number of 135-52-4, with the molecular formula C20H16N4O6S and a molecular weight of 440.4. It is stored at ambient conditions and carries a signal word of "Warning" for safety. Molekula supplies Zincon 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 — $45.10 per pack
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25 g — $195.60 per pack
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 | Dark violet powder |
| Loss on Drying | ≤10% |
| Suitability as a complexometric indicator | Pass |
| Absorption maxima | 490-495nm |
| Absorptivity (1%, 1cm, λmax) | ≥375 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 12956860 |
| CAS Number | 135-52-4 |
| IUPAC Name | 2-[[N-(2-hydroxy-5-sulfoanilino)-C-phenylcarbonimidoyl]diazenyl]benzoic acid |
| Molecular Formula | C20H16N4O6S |
| Molecular Weight | 440.4 |
| Exact Mass | 440.0791 |
| SMILES | C1=CC=C(C=C1)C(=NNC2=C(C=CC(=C2)S(=O)(=O)O)O)N=NC3=CC=CC=C3C(=O)O |
| InChIKey | OWQUYBAASOSGNO-UHFFFAOYSA-N |
| InChI | InChI=1S/C20H16N4O6S/c25-18-11-10-14(31(28,29)30)12-17(18)22-24-19(13-6-2-1-3-7-13)23-21-16-9-5-4-8-15(16)20(26)27/h1-12,22,25H,(H,26,27)(H,28,29,30) |
| PubChem CID | 67268 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2928.00.2500 |
| Tariff Code | 2928009090 |
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
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- 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
- 1-(2-hydroxycarbonylphenyl)-5-(2-hydroxy-5-sulfophenyl)-3-phenylformazan
- 2-[[N-(2-hydroxy-5-sulfoanilino)-C-phenylcarbonimidoyl]diazenyl]benzoic acid
- 2-Carboxy-2'-hydroxy-5'-sulfoformazylbenzene
- Benzoic acid, 2-[[[(2-hydroxy-5-sulfophenyl)azo]phenylmethylene]hydrazino]-
- OWQUYBAASOSGNO-UHFFFAOYSA-N
- VSSGEDASAZNGHS-UHFFFAOYSA-N
Frequently asked questions
What is Zincon (CAS 135-52-4) commonly used for?
Zincon is primarily used as a selective chelating agent for the photometric determination of zinc in analytical chemistry, particularly in water and environmental testing.
What is the molecular formula and molecular weight of Zincon?
The molecular formula is **C₂₀H₁₆N₄O₆S** and the molecular weight is **440.4 g/mol**.
How should Zincon be stored?
Store Zincon at **ambient temperature** in a tightly sealed container, away from moisture and direct sunlight.
What grade or purity is available for Zincon from Molekula?
Molekula supplies Zincon in **analytical reagent grade**, suitable for high-precision laboratory applications.
Can Molekula supply Zincon in bulk quantities?
Yes, Molekula can provide Zincon in bulk, with quantities tailored to your specific requirements—please contact us for details.
What documentation comes with a Zincon order?
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.