Disodium 2,7-Naphthalenedisulfonate Supplier | 1655-35-2
Product Overview
Disodium 2,7-naphthalenedisulfonate combines a naphthalene ring system with two sulfonate groups at the 2 and 7 positions. The two sodium ions distinguish this material from the corresponding free acid. The defined substitution pattern identifies the chemical building block required by a synthesis route.
The compound is a solid aromatic sulfonate. Its application as an intermediate centres on further chemical synthesis, including dye-intermediate manufacture and fine-chemical production. The 2,7-isomer is a distinct material from other naphthalenedisulfonate positional isomers.
Unilong supplies this product to chemical manufacturers, intermediate producers and industrial raw-material buyers. Purchasing support covers material qualification, commercial production orders and recurring bulk supply.
Product Details
| Item | Details |
|---|---|
| Molecular formula | C10H6Na2O6S2 |
| Molecular weight | 332.25 g/mol |
| Physical state | Solid |
| MDL number | MFCD00066365 |
| Alternative name | Sodium naphthalene-2,7-disulfonate |
Technical Specifications
For orders specifying 99% HPLC purity, the following target profile forms a basis for quotation. The accepted supply limits and test methods are stated in Unilong's offer.
| Test item | Quotation target | Method |
|---|---|---|
| Appearance | White powder | Visual examination |
| Purity | 99.0% minimum | HPLC |
| Water content | 2.0% maximum | Karl Fischer |
| Insoluble material | 0.1% maximum | Specified in the offer |
| Maximum single impurity | 1.0% maximum | Specified in the offer |
| Total impurities | 2.0% maximum | Specified in the offer |
The profile covers chromatographic purity alongside moisture, insoluble residue and related-substance limits. Different assay requirements can be addressed against the purchasing specification submitted for the order.
Applications
Dye-Intermediate Production
Disodium 2,7-naphthalenedisulfonate is used as an intermediate in dye chemistry. Its sulfonated naphthalene structure serves synthesis routes requiring the 2,7-substitution pattern. The product is positioned as a chemical raw material for intermediate manufacture.
For production orders, the proposed specification brings assay, moisture, insoluble material and impurity limits together in one technical profile. This supports material qualification against the requirements of the intended synthesis process.
Industrial Organic Synthesis
The compound is also an organic building block for industrial chemical synthesis. The disodium salt and its defined substitution pattern are relevant to projects requiring this specific sulfonated aromatic starting material.
Unilong supports commercial procurement for established synthesis processes and production requirements. Qualification samples allow industrial buyers to assess the offered material before a commercial order, with sample quantity and availability agreed for the proposed supply.
Quality and Product Documents
Request the product specification or TDS, SDS and applicable lot-specific COA for the material offered. Document availability, versions and reporting scope are confirmed for the proposed supply.
Batch-document requests can be linked to the quotation or lot reference. Additional analytical or importing-market document requirements are handled as part of the order discussion.
Packaging and Supply
The bulk packaging option for quotation is 25 kg per fibre drum. Other net weights and container requirements are quoted according to the order. The final packing arrangement, MOQ and freight terms are recorded in the offer.
Commercial orders are quoted against the required specification and total purchase quantity. The MOQ is stated in the offer. Qualification samples are arranged in connection with prospective industrial bulk orders.
Unilong's usual dispatch estimate is 7–15 days after order confirmation. Confirmed qualification samples are generally dispatched within 2–3 days. Both estimates depend on material availability and order requirements; the schedule for this product is stated in the quotation. International transit time is additional.
Storage and Handling
Store in securely closed containers in a cool, dry location. Minimise dust during handling and use suitable ventilation and personal protective equipment. The supplied material's label and SDS provide the applicable storage and handling instructions.
Shelf-life or retest-date requirements can be included with the order specification.
Supply Support from Unilong
For orders requiring pre-shipment sample approval or independent inspection, Unilong can discuss the arrangement before shipment. The agreed scope and timing form part of the order terms.
Our Service and Support information explains the general sample qualification and shipping process. The sales team handles product-specific specifications, packaging and commercial terms.
Frequently Asked Questions
Can industrial buyers request qualification samples?
Yes. Qualification samples support industrial buyers preparing for commercial bulk orders. Sample quantity, availability, charges and dispatch arrangements are confirmed for the proposed supply.
Can you quote against a titration-based assay requirement?
Send the required assay, test method and dry-basis condition. We will assess the offered material against that specification and provide a supply response.
Can I include additional impurity limits?
Yes. Include the impurity names, limits and analytical requirements with the specification. Any additional testing or acceptance terms are agreed for the order.
How are repeat orders linked to an accepted specification?
Reference the previous quotation or accepted specification when ordering again. The new offer records the applicable specification, packaging and current commercial terms.
What is the MOQ for commercial orders?
The MOQ is confirmed for the requested specification and commercial order quantity. Send the total quantity and destination for a bulk supply quotation.
What information is needed for a price quotation?
Send the required specification, quantity, application, destination and packaging. Include any document requirements and requested dispatch date.
Request a Disodium 2,7-Naphthalenedisulfonate Quote
Contact Unilong for CAS 1655-35-2 commercial-order and bulk pricing. Send your specification, quantity and destination for an offer covering the proposed material, packaging and dispatch arrangements.
Email: sales@unilongindustry.com
