8-Anilino-1-naphthalenesulfonic acid ammonium salt
8-Anilino-1-naphthalenesulfonic acid ammonium salt (CAS 28836-03-5), molecular formula C16H13NO3S · NH3, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- 1,8-ANS NH4,ANSA,Ammonium 8-anilino-1-naphthalenesulfonate,N-Phenyl peri acid

| Molecular weight | 316.37 |
|---|---|
| Linear formula | C16H13NO3S · NH3 |
| Assay | ≥90% (NT) |
| Grade | technical |
| Solubility | NaOH: soluble1 NH2O: solublemethanol: soluble |
| Application | ANS forms an inclusion complex with cyclodextrin. Such model systems are useful to mimic biological recognition and can be studied by measuring the change in fluorescence of free-ANS to complexed-ANS. When ANS enters the hydrophobic core of cyclodestrin, it’s fluorescence increases 1,2. Utilized in the reagent phase of a sodium-selective fiber-optic sensor. The reagent phase also contains a copper(II) polyelectrolyte, which binds to ANSA in the absence of sodium and quenches the fluorescence. In the presence of sodium, ANSA forms a cationic complex creating ion-pairs, causing it to fluoresce 3. ANS is often incorporated into di-block polymers and can be released by changes in the local environment (i.e., temperature, pH, etc.) 4,5,6. ANS is commonly used as a fluorescence probe to investigate molecular assemblies of surfactants and amphiphilic polymers because a blue shift of the emission maximum indicates the flu |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Fluorescence | λex 388 nm; λem 470 nm in 0.1 M Tris, 0.2 M KCl, pH 9.0, BSA |
|---|
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 8-Anilino-1-naphthalenesulfonic acid ammonium salt?
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8-Anilino-1-naphthalenesulfonic acid ammonium salt (CAS 28836-03-5), molecular formula C16H13NO3S · NH3, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of 8-Anilino-1-naphthalenesulfonic acid ammonium salt does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 8-Anilino-1-naphthalenesulfonic acid ammonium salt in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of 8-Anilino-1-naphthalenesulfonic acid ammonium salt?
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8-Anilino-1-naphthalenesulfonic acid ammonium salt has CAS number 28836-03-5 and molecular formula C16H13NO3S · NH3. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for 8-Anilino-1-naphthalenesulfonic acid ammonium salt?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of 8-Anilino-1-naphthalenesulfonic acid ammonium salt ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should 8-Anilino-1-naphthalenesulfonic acid ammonium salt be stored?
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Store 8-Anilino-1-naphthalenesulfonic acid ammonium salt in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is 8-Anilino-1-naphthalenesulfonic acid ammonium salt used for?
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8-Anilino-1-naphthalenesulfonic acid ammonium salt is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for 8-Anilino-1-naphthalenesulfonic acid ammonium salt?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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