Ferene disodium salt

Application Colorimetric reagent for iron, which is more sensitive than other reagents (e.g. Ferrozine), molar absorptivity 35500 liters/mol cm.
Synonyms 2-Furansulfonic acid, 5,5′-[3-(2-pyridinyl)-1,2,4-triazine-5,6-diyl]bis-, sodium salt (1:2); 3-(2-pyridyl)-5,6-bis(5-sulfo-2-furyl)-1,2,4-triazine disodium salt; 5,5′-(3-(2-Pyridinyl)-1,2,4-triazine-5,6-diyl)bis-2-furansulfonic acid disodium salt; 5,5′(3-(2-Pyridyl)-1,2,4-triazine-5,6-diyl)-bis-2-furansulphonic acid disodium salt; 5,5′-[3-(Pyridin-2-yl)-1,2,4-triazine-5,6-diyl]difurane-2-sulfonate de disodium; Dinatrium-5,5′-[3-(pyridin-2-yl)-1,2,4-triazin-5,6-diyl]difuran-2-sulfonat; Disodium 5,5′-[3-(2-pyridinyl)-1,2,4-triazine-5,6-diyl]di(2-furansulfonate); Disodium 5,5′-[3-(pyridin-2-yl)-1,2,4-triazine-5,6-diyl]difuran-2-sulfonate; 2-Furansulfonic acid, 5,5′-(3-(2-pyridinyl)-1,2,4-triazine-5,6-diyl)bis-, disodium salt; 3-(2-Pyridyl)-5,6-bis(2-(5-furylsulfonic acid))-1,2,4-triazinedisodiumsalt; 3-(2-Pyridyl)-5,6-bis(2-(5-furylsulfonicacid))-1,2,4-triazinedisodiumsalt; 3-(2-Pyridyl)-5,6-di(2-furyl)-1,2,4-triazine-5′,5′′-disulfonic acid disodium salt; 3-(2-PYRIDYL)-5,6-DIFURYL-1,2,4-TRIAZINEDISULFONIC ACID SODIUM SALT; 5,5′-[3-(2-Pyridyl)-1,2,4-triazine-5,6-diyl]difuran-2-sulfonic acid disodium salt; Ferene; Ferene S; Ferene-S; Sodium 5,5′-(3-(pyridin-2-yl)-1,2,4-triazine-5,6-diyl)bis(furan-2-sulfonate)
CAS Number 79551-14-7 | Molecular Formula C16H8N4Na2O8S2 | Molecular Weight 494.37 | MDL Number MFCD00040642 | Beilstein Registry Number 5710932
SMILES [Na+].[Na+].O=S([O-])(=O)c4oc(c1nnc(nc1c2oc(cc2)S([O-])(=O)=O)c3ncccc3)cc4
StdInChI: InChI=1S/C16H10N4O8S2.2Na/c21-29(22,23)12-6-4-10(27-12)14-15(11-5-7-13(28-11)30(24,25)26)19-20-16(18-14)9-3-1-2-8-17-9;;/h1-8H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2
StdInChIKey IVLSEFOVPQFJBB-UHFFFAOYSA-L

PRODUCT DETAILS

Description of Ferene disodium salt

Appearance	Yellow powder
Test Method	Colorimetry
Moisture	9.0-13.0 %
Emax 593nm Fe2+/Ferene(color limiting)	> 34000
Emax 593nm Fe2+/Ferene(iron limiting)	> 34000
Emax 304nm(in distilled water)	> 25500
Iron Content	< 5 ppm
Solubility(5% in water)	Solubility(5% in water)
Productivity	20kg/month
Package	Per request
Storage	Sealed packaging at room temperature. Protected from light, and placed in a cool, dry place. Avoid moisture absorption.

QC Procedure for Ferene disodium salt

Sampling,

Retain a sample of 5 g in a 30 mL HDPE container.

Please allow minimum 30 minutes stir time for complete dissolution of sample for UV Assay, Iron Standard Limiting, and Color Standard Limiting.

UV Assay,

Prepare the sample (duplicate preparation) and a control sample (single preparation)in the following manner: Add approximately 75.0 mg (record the actual mass) to a 100.0 mL volumetric flask and dilute to the mark with DI water. Allow solutions to dissolve with shaking and stirring. Dilute these solutions 50X by pipetting 2.00 mL of solution into a 100.0 mL volumetric flask and filling to the mark with DI water.Scan the diluted sample and control preparations on a calibrated UV-VIS spectrophotometer from 400nm to 200nm, recording the absorbance at 304nm. The shape of the sample curve must compare well to the control.
Calculation:
εMax304nm = [304nm value×494.35g/mol×5000]÷[sample mg × (1 – (%water/100))]
Specification >25 500. The control result must be within 5% of it’s original value.

Colorimetric Assay: Assay of Ferene-Iron Complex,

B. Color Reagent Limiting

1. Dissolve 82.03 g Sodium Acetate in 1000 mL deionized water. Adjust pH with 6N HCl to 4.75. Stable for 2 years at room temperature.2. Dissolve 35 mg FeSo4.7 H20 and 350 mg Ascorbic Acid in 100 mL of Solution 1.3. Dissolve 20 mg Ferene sample (duplicate preparation) and control (single preparation) volumetrically in 250 mL of deionized water in a volumetric flask.

Record the actual mass of sample used.

4. To 4 separate test tubes, add 2 mL (autopipet) of Solution 2. Then add thecfollowing to each test tube (autopipet),
Test tube 1 – 2 mL DI water (Blank)
Test tube 2 – 2 mL of control preparation (from Section B3)
Test tube 3 – 2 mL of sample preparation 1 (from Section B3)
Test tube 4 – 2 mL of sample preparation 2 (from Section B3)
Allow the color to develop for 10 minutes, then take the absorbance at 593 nm on a calibrated UV-Vis spectrophotometer, blanked against above blank. Use a 10 mm pathlength cell.

εmax = [Absorbance x 494.35 x 1500 ]÷[mg sample x (1- % H20÷100) ]
Results must be > 34,000. Control must be within 5% of original value.

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H315-H319-H335
Precautionary Statements	P261-P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes (Europe)	Xi
Risk Statements (Europe)	36/37/38
Safety Statements (Europe)	26-36
WGK Germany	3