Fluorescein sodium

Fluorescein sodium (CAS registry number 518-47-8) is supplied as a chemical raw material for formulation and synthesis work. The molecular formula is C20H10Na2O5, giving a molecular weight of 376.3 g/mol. This is a aromatic compound of 20 carbon with 5 heteroatoms with Na as the metal centre, present in ionic form; of medium-to-high molecular weight. Documents are issued per shipment rather than per catalogue entry: each batch is accompanied by a Certificate of Analysis, and safety data sheets, technical datasheets and third-party test reports are supplied on request for export documentation.

Product Overview

Applications

Inorganic Chemicals

Recorded applications for this entry: Inorganic Chemicals. Where your formulation differs, the relevant point to check is not the use category but the impurity profile — tell us the end use and we will map it to the specification.

For export enquiries, include the destination country and the intended application in your message. This lets us confirm whether the grade needs any additional documentation beyond the standard per-batch COA, and whether the packing suits the planned transport mode.

Packaging & Storage

Packing is per order / batch confirmation (not published) and purity is per batch COA (not published). Both are agreed at order stage; for export movements the packing is chosen with the transport mode and destination in mind, and drum, bag or repacked formats are all available. Storage: sealed, in a cool and dry place, away from direct sunlight.

Each shipment is accompanied by a batch Certificate of Analysis. For cross-border orders, MSDS, technical datasheets and third-party test reports can be issued to match your documentation set; declare the destination country when you enquire so the paperwork matches on arrival. Contact: info@591daili.com · +86-18553102138.

Quality & Documentation

COA (Certificate of Analysis) is provided with every batch. MSDS/technical data sheets and third-party test reports are available on request. Purity and packaging are subject to batch COA and order confirmation.

Molecular Character — Selection Notes

What the structure means for your process

From a process-selection standpoint, This product is an aromatic organic carrying 5 oxygen, with mid-range polarity. defines where this material fits and where it does not. Three points deserve checking before purchase: structural type, which sets the reactive sites and compatibility; polarity class, which dictates the solvent system; and molecular-weight range, which governs dosage and dispersion feasibility.

Ionic form also carries a hidden cost in selection: hygroscopicity. When sealing is inadequate, ionic inorganic or carboxylate products cake, which affects dosing as well as weighing accuracy. Where the usage rate is low, smaller packs replenished frequently are often cheaper than one large pack held in storage.

For this product specifically: the ring backbone gives better heat and chemical stability than an aliphatic equivalent of equal carbon count, but aromatic systems oxidise and discolour readily at elevated temperature. If your process holds a hot section, run a thermal-stability comparison at the sample stage rather than discovering it in production.

How it behaves in your formulation

Polarity sits in the conventional range, so behaviour in a given formulation depends on the solvent system and additive interactions around it. A small-scale trial under real formulation conditions is the sensible confirmation.

If you are evaluating this as an alternative to an incumbent supplier, the difficulty for aromatic products is rarely the main component but the impurity profile. The stated impurity distribution may differ from what the incumbent actually delivers, so comparing two or three sample batches before switching is faster than chasing a deviation afterwards.

At 320~500 g/mol the species exists in water as a colloid or polymer segments and measurably changes rheology once dispersed, making it useful as a thickener, dispersant, film former or release matrix. Check shear stability separately — a wide molecular-weight distribution can lose viscosity faster than expected under strong shear.

Storage, handling and documents

A few points on receipt and storage. keep the container tightly sealed — ionic products readily absorb moisture and cake; keep inorganic material away from strong acids and reducing agents; pre-disperse high-molecular-weight material, as adding it dry into a viscous medium clumps; specific handling and PPE follow the MSDS issued with the batch.. For inbound or outbound shipments, confirm packing group and transport classification in advance to avoid demurrage caused by documentation mismatch.

On documentation: the batch COA travels with every shipment; MSDS, technical datasheets and third-party test reports can be issued on request. If your quality system requires supplier qualification documents — business licence, production permit, management-system certificates — state the destination country and the document list when you enquire, and we will assemble the set at once.

Technical Profile

What this product is

Fluorescein sodium is an inorganic compound with CAS registry number 518-47-8 and molecular formula C20H10Na2O5 (molecular weight 376.3), belonging to the inorganic chemicals segment of chemical raw materials.

This entry belongs to the inorganic chemicals range, where the material is normally supplied against a stated grade rather than blended to a formula. Where a buyer works to a published standard, the useful conversation is about which data the grade is qualified against and how deviations are handled, rather than about the use category itself.

Jinan Shenghe Chemical Co., Ltd. supplies Fluorescein sodium with stable inventory and provides a Certificate of Analysis (COA) with each batch; custom repacking is available per process requirement.

Identification

CAS number: 518-47-8 — searchable in PubChem for physicochemical, safety and regulatory data.

Its molecular formula C20H10Na2O5 comprises 20 C, 10 H, 2 Na, 5 O atoms.

Also known as: Fluorescein sodium · 荧光素钠

Category: inorganic chemicals

Applications and qualification

Within the inorganic chemicals segment, the technical questions differ from other categories. Buyers here are usually working to a specification or a standard rather than to a general description, so the useful conversation covers impurity profile, particle size or assay method, and which data the grade is qualified against.

For qualification work, we can supply a sample batch with full documentation so that incoming QC has something concrete to compare against. Mentioning the destination country at enquiry stage also lets us match the paperwork set to your import requirements.

Specification and documentation

Purity available is per batch COA (not published), with packing per order / batch confirmation (not published). Neither value is asserted in advance: every batch ships with a Certificate of Analysis carrying the measured results, so incoming QC compares against real data rather than a catalogue claim. MSDS, technical datasheets and third-party test reports can be issued for qualification purposes — state the standard you qualify against when you enquire.

Sourcing and supply

Supplier: Jinan Shenghe Chemical Co., Ltd.. For export orders, state the destination country, the transport mode and the document set you need when you enquire — packing, paperwork and quotation terms all follow from those three. Samples can be arranged for qualification, and lead time depends on stock and order size rather than on a fixed promise.

Email: info@591daili.com · Tel/WhatsApp: +86-18553102138

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