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Analytical ReagentsAvailable on request

Tropeolin O

Synonyms: 4-([2,4-Dihydroxyphenyl]azo)benzenesulfonic acid sodium salt · Acid Orange 6 · Chrysoin · Resorcinol yellow

CAS No.547-57-9
FormulaC12H9N2NaO5S
Mol. weight316.27
Catalogue No.VQ-000094
PurityOn COA
HSN32129090

Tropeolin O (CAS 547-57-9) – analytical reagent. C12H9N2NaO5S, MW 316.27. Get a quote from Vaqora Chemicals, COA included, shipped worldwide.

Pack sizesPrice on quotation · bulk available
25 g
100 g
1 kg
5 kg
Bulk / custom pack · kg to MT
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Batch COA with every lot
16-section GHS SDS
Export to 120+ countries
DG-compliant packing

About Tropeolin O

Tropeolin O (CAS 547-57-9) is an analytical reagent offered by Vaqora Chemicals. With the molecular formula C12H9N2NaO5S, it has a molar mass of 316.27 g/mol. Its systematic (IUPAC) name is sodium 4-[(2,4-dihydroxyphenyl)diazenyl]benzenesulfonate. It is also known as Acid Orange 6 or Chrysoin.

In its supplied form it is beige-brown to orange powder or crystals. Store sealed in a dry, well-ventilated location away from incompatible materials. Good laboratory practice and suitable PPE are recommended during handling.

Key uses span biological staining and laboratory analysis. Buyers come mainly from academic and industrial research.

Vaqora Chemicals supplies Tropeolin O in 25 g, 100 g, 1 kg and 5 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

  • Biological staining
  • Laboratory analysis

Industries

Specifications & identifiers

Chemical identifiers
Product nameTropeolin O
Catalogue No.VQ-000094
CAS Number547-57-9
IUPAC namesodium 4-[(2,4-dihydroxyphenyl)diazenyl]benzenesulfonate
Molecular formulaC12H9N2NaO5S
Molecular weight316.27 g/mol
Exact mass316.013
HSN code32129090
InChIKeyCOEZWFYORILMOM-UHFFFAOYSA-M
SMILESC1=CC(=CC=C1N=NC2=C(C=C(C=C2)O)O)S(=O)(=O)[O-].[Na+]
PubChem CID2728027
Physical properties
Physical formCrystalline
AppearanceBeige-brown to orange powder or crystals
H-bond donors / acceptors2 / 7
TPSA131 Ų
Synonyms4-([2,4-Dihydroxyphenyl]azo)benzenesulfonic acid sodium salt, Acid Orange 6, Chrysoin, Resorcinol yellow, C.I. Acid Orange 6, Tropaeolin O, Chrysoine, Chrysoine S, Tropaeoline, Resorcin yellow, Chrysoine Extra, Tropaeoline O

Documents

Frequently asked questions

What is the CAS number of Tropeolin O?

The CAS Registry Number of Tropeolin O is 547-57-9. It is also known as 4-([2,4-Dihydroxyphenyl]azo)benzenesulfonic acid sodium salt, Acid Orange 6, Chrysoin.

What is the molecular formula and molecular weight of Tropeolin O?

Tropeolin O has the molecular formula C12H9N2NaO5S and a molecular weight of 316.27 g/mol. Its IUPAC name is sodium 4-[(2,4-dihydroxyphenyl)diazenyl]benzenesulfonate.

Which grade and pack sizes of Tropeolin O can I order?

We supply Tropeolin O, in 25 g, 100 g, 1 kg, 5 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Tropeolin O?

Yes. Every lot of Tropeolin O is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Tropeolin O be shipped internationally?

Yes. We export Tropeolin O worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.

Enquire about Tropeolin O

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Why buyers choose Vaqora

  • Batch-traceable lots with COA
  • R&D packs to multi-tonne supply
  • IATA / IMDG dangerous-goods packing
  • EXW, FOB, CIF, DAP Incoterms
  • Custom synthesis & sourcing
How ordering works

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