Molekula
Scientific Supply
Molekula Fluorescein disodium salt (insoluble, 50-53% dye content)
Fluorescein disodium salt (insoluble, 50–53% dye content) is a fluorescent dye used in biological staining, diagnostic assays, and tracer studies.CAS number: 518-47-8Select the required pack size. Contact Bench & Flask for bulk quantities and availability.Supplier packaging image is illustrative; packaging may vary by pack size.Specifications Property Value Appearance...
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Product information
Specification & product details.
Fluorescein disodium salt (insoluble, 50–53% dye content) is a fluorescent dye used in biological staining, diagnostic assays, and tracer studies.
CAS number: 518-47-8
Select the required pack size. Contact Bench & Flask for bulk quantities and availability.
Supplier packaging image is illustrative; packaging may vary by pack size.
Specifications
| Property | Value |
| Appearance | Red/ dark orange powder |
| Heavy metals | ≤ 40 mg/kg |
| Loss on Drying | ≤ 8% |
| Assay | ≥80.0% |
| Absorption Ratio | 1.20-1.70 ((λmax - 15 nm)/(λmax +15 nm)) |
| Cadmium (Cd) | ≤ 1 mg/kg |
| Lead (Pb) | ≤ 10 mg/kg |
| Mercury (Hg) | ≤ 1 mg/kg |
| Arsenic (As) | ≤ 3 mg/kg |
| Wavelength of Max. Absorption | 488.0 - 492.0 nm (in distilled water) |
Storage & handling
| Property | Value |
| Storage Temperature | Ambient |
| Flash Point | 218 °C |
| Acidity | Neutral |
Identification
| Property | Value |
| SKU | 15462696 |
| CAS Number | 518-47-8 |
| IUPAC Name | disodium;2-(3-oxido-6-oxoxanthen-9-yl)benzoate |
| EC Number | 208-253-0 |
| Molecular Formula | C20H10Na2O5 |
| Molecular Weight | 376.28 |
| Exact Mass | 376.0324 |
| SMILES | C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)\[O-\])OC5=C3C=CC(=C5)\[O-\].\[Na+\].\[Na+\] |
| InChIKey | NJDNXYGOVLYJHP-UHFFFAOYSA-L |
| InChI | InChI=1S/C20H12O5.2Na/c21-11-5-7-15-17(9-11)25-18-10-12(22)6-8-16(18)19(15)13-3-1-2-4-14(13)20(23)24;;/h1-10,21H,(H,23,24);;/q;2\*+1/p-2 |
| PubChem CID | 10608 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 32129000 |
| Tariff Code | 3212900000 |
Safety & GHS
Precautionary statements
- P264Wash thoroughly after handling
- P280Wear protective gloves/protective clothing/eye protection/face protection
- P308+313IF exposed or concerned: Get medical advice/attention
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Alternative names
Ak-Fluor; Fluorescein disodium salt; Fluorescein, soluble; Ki202; Resorcinol phthalein sodium; Sodium fluorescein; Soluble fluorescein; Uranin; Uranine WSS; Uranine Yellow
Product documentation
Product specification PDF. Batch-specific certificates of analysis and safety data sheets are available on request.
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